IMAGE EXPOSURE DEVICE, IMAGE EXPOSURE METHOD AND PROGRAM

Abstract

Image exposure device (10) comprising: an image display device (12) having multiple pixels and emitting light according to a display image represented by the multiple pixels; a support section (21) supporting a photosensitive recording medium (14) for recording a recorded image according to the display image in a state in which an exposure surface (14A) of the photosensitive recording medium faces the image display device; a limiting element (16) provided between the image display device and the support section, limiting an angle of the light emitted by the image display device onto the photosensitive recording medium;and a controller (30) that controls the image display device to display the display image, wherein the image quality of an input image represented by input image data is degraded by highlighting a density difference of a high-frequency component of the input image, wherein the controller highlights the density difference of the high-frequency component by unsharp mask processing, wherein the controller performs the unsharp mask processing which is weighted according to a resolution of the image display device, wherein in a case where a weight of the unsharp mask processing is characterized by y and a standard deviation of a degree of a two-dimensional Gaussian distribution used for the unsharp mask processing is characterized by x, the following formula is satisfied, −0.1×x+0.40 <y<−0,1×x+0,90.;

Description

BACKGROUND OF THE INVENTION Area of ​​the invention

[0001] The present disclosure relates to an image exposure device, an image exposure method and a program. Description of the state of the art

[0002] For the exposure of photographs, photomasks, or the like, an optical projection system is used, which is an optical system of a forming image system. In one case of an optical projection system, however, an optical system, such as a lens, is required between a display image shown by an image display device and a light-sensitive material, such as a photosensitive recording medium, and a large volume is necessary. In the case of exposing a pattern of a semiconductor or the like using a photomask, the photomask is brought into close or almost close contact with the light-sensitive material. At the time of exposure, a gap or a protective plate is provided between the light-sensitive material and the mask pattern, and parallel light is projected, thereby suppressing blurring of the exposed image.

[0003] Additionally, light emitted parallel to the photosensitive material from a light source is used to irradiate and expose the photosensitive material, thereby suppressing blurring of an exposed recorded image. For example, JP2009-037011A and US9126396B disclose a technique in which the image display device, such as an optical fiber array, is installed between the photosensitive material and the display image shown on an electronic display or the like, and in which, from light emitted from the display to the photosensitive material, parallel light from the display to the photosensitive material is selected (collimated) and the photosensitive material is irradiated. The techniques disclosed in JP2009-037011A and US9126396B can suppress bleed-through of the exposed recorded image. SUMMARY OF THE INVENTION

[0004] As described above, in a case where light emitted by the image display device is collimated by limiting the light with a limiting element, light transmitted through the limiting element can diffuse depending on the structure of the limiting element. Therefore, the image recorded on the light-sensitive recording medium can be a so-called blurred image, in which the density difference becomes small and the visibility of an edge portion of the image is reduced.

[0005] The techniques disclosed in JP2009-037011A and US9126396B may not be able to suppress the blurring of the recorded image caused by the diffusion of light transmitted through the limiting element.

[0006] The present disclosure was made in view of such circumstances, and an objective of the present invention is to provide an image exposure device, an image exposure method and a program that can suppress the blurring of the recorded image compared to a case in which the limiting element is simply provided.

[0007] To achieve the above-described objective, an image exposure device according to the first aspect of the present disclosure comprises an image display device having several pixels and emitting light according to a display image represented by the several pixels; a support section supporting a photosensitive recording medium for recording a recorded image according to the display image in a state in which an exposure surface of the photosensitive recording medium faces the image display device; a limiting element provided between the image display device and the support section limiting an angle of the light emitted by the image display device onto the photosensitive recording medium;and a controller that controls the image display device to display the image, in which the image quality of an input image represented by input image data is degraded by highlighting a density difference of a high-frequency component of the input image.

[0008] In the image exposure device of the second aspect according to the first aspect of the present disclosure, the displayed image can be an image in which a border is more strongly emphasized than the recorded image.

[0009] In the image exposure device of the third aspect according to the first aspect or the second aspect of the present disclosure, the control can highlight the density difference of the high-frequency component by unsharp mask processing.

[0010] In the image exposure device of the fourth aspect according to the third aspect of the present disclosure, the control can perform the unsharp mask processing, which is weighted according to a resolution of the image display device.

[0011] In the image exposure device of the fifth aspect according to the third aspect or the fourth aspect of the present disclosure, in a case where the weight of the unsharp mask processing is characterized by y and a standard deviation of a degree of a two-dimensional Gaussian distribution used for the unsharp mask processing is characterized by x, the following formula (1) may be satisfied. − 0,1 × x + 0,40 < y < − 0,1 × x + 0,90

[0012] In the image exposure device of the sixth aspect according to the third aspect or the fourth aspect of the present disclosure, in a case where the weight of the unsharp mask processing is characterized by y, a standard deviation of a degree of a two-dimensional Gaussian distribution used for the unsharp mask processing is characterized by x, and a resolution of the image display device is characterized by X ppi (pixels per inch), the following formula (2) may be satisfied. − 0,1 × x × ( X ÷ 325 ) + 0,40 < y < − 0,1 × x × ( X ÷ 325 ) + 0,90

[0013] In the image exposure device of the seventh aspect according to any aspect of the first to sixth aspects of the present disclosure, the limiting element can be an optical element of an optical diffusion system.

[0014] In the image exposure device of the eighth aspect according to the seventh aspect of the present disclosure, the optical element can be a lamellar film in which first light-transmitting sections that transmit light and first light-shielding sections that shield light are arranged alternately in a first direction on a surface parallel to a surface on which the pixels of the image display device are arranged, and second light-transmitting sections that transmit light and second light-shielding sections that shield light are arranged alternately in a second direction on the surface not parallel to the first direction.

[0015] In the image exposure device of the ninth aspect according to the seventh aspect of the present disclosure, the optical element can be a lamellar film in which first light-transmitting sections that transmit light and first light-shielding sections that shield light are arranged alternately in a first direction on a surface parallel to a surface on which the pixels of the image display device are arranged, and second light-transmitting sections that transmit light and second light-shielding sections that shield light are arranged alternately in a second direction on the surface perpendicular to the first direction.

[0016] In the image exposure device of the tenth aspect according to the eighth aspect or the ninth aspect of the present disclosure, the lamellar film can be formed by laminating the first layer in which the first light-transmitting sections and the first light-blocking sections are arranged alternately only in the first direction, and the second layer in which the second light-transmitting sections and the second light-blocking sections are arranged alternately only in the second direction.

[0017] In the image exposure device of the eleventh aspect according to any aspect of the eighth to tenth aspects of the present disclosure, the thickness of the lamellar film can be 2.0 mm or more and 4.0 mm or less, and the lamellar spacing of the lamellar film can be 80 µm or less.

[0018] In the image exposure device of the twelfth aspect according to any aspect of the first to eleventh aspects of the present disclosure, the limiting element can be arranged at a predetermined distance from the light-sensitive recording medium.

[0019] In the image exposure device of the thirteenth aspect according to the twelfth aspect of the present disclosure, the predetermined distance may be 0.67 mm or less.

[0020] To achieve the above-described objective, an image exposure method of the eleventh aspect of the present disclosure is an image exposure method in an image exposure device comprising an image display device having multiple pixels and emitting light according to a display image represented by the multiple pixels, a support section supporting a photosensitive recording medium for recording a recorded image according to the display image in a state in which an exposure surface of the photosensitive recording medium is facing the image display device, and a limiting element provided between the image display device and the support section limiting an angle of the light emitted by the image display device onto the photosensitive recording medium, and comprising the method of controlling the image display device to display the display image.where the image quality of an input image represented by input image data is degraded by highlighting a density difference of a high-frequency component of the input image.

[0021] To achieve the goal described above, a program of the twelfth aspect of the present disclosure is a program for causing a computer to execute a process, wherein the computer controls an image exposure device comprising an image display device having multiple pixels and emitting light according to a display image represented by the multiple pixels, a support section supporting a photosensitive recording medium for recording a recorded image according to the display image in a state in which an exposure surface of the photosensitive recording medium faces the image display device, and a limiting element provided between the image display device and the support section limiting an angle of the light emitted by the image display device onto the photosensitive recording medium, and the process includes controlling the image display device.to display the image where the image quality of an input image represented by input image data is degraded by highlighting a density difference of a high-frequency component of the input image.

[0022] According to the present disclosure, the blurriness of the recorded image can be suppressed compared to a case where the limiting element is simply provided. List of characters Fig. Figure 1 is an exploded perspective view of an example of an image exposure device of one embodiment. Fig. Figure 2 is a cross-sectional view of an example of the image exposure device of the embodiment. Fig. Figure 3 is a block diagram that illustrates an example of a functional configuration of the image display device of the embodiment. Fig.Figure 4 is an explanatory diagram to illustrate a hardware configuration of the image display device according to the present embodiment. Fig. Figure 5 is a schematic cross-sectional view to illustrate a direction of travel of light in the image exposure device of the embodiment. Fig. Figure 6 is a diagram showing a configuration of an example of a lamellar film of the present embodiment. Fig. Figure 7 is a diagram showing a configuration of another example of the lamellar film of the present embodiment. Fig. Figure 8 is an explanatory diagram to illustrate the diffusion of light that passes through the lamellar foil. Fig. Figure 9 is an explanatory diagram to illustrate a difference between a display image and a recorded image. Fig.10 is a flowchart of an example of image processing performed by a controller of the image display device of the present embodiment. Fig. Figure 11A is an explanatory diagram illustrating an example of highlight processing of high-frequency components in the Fig. 10 image processing examples shown. Fig. 11B is an explanatory diagram consisting of Fig. 11A is continued to illustrate an example of the highlighting processing of high-frequency components in the in Fig. 10 image processing examples shown. Fig. 11C is an explanatory diagram consisting of Fig. 11B is continued to illustrate an example of the highlighting processing of high-frequency components in the in Fig. 10 image processing examples shown. Fig.Figure 12 is a graph illustrating a preferred area of ​​unsharp mask processing performed by controlling the image display device of the embodiment. Fig. Figure 13 is a graph showing an experimental result of a basic experiment. Fig. Figure 14 is a graph showing an experimental result of a highlighting experiment of high-frequency components. DESCRIPTION OF PREFERRED EXECUTION FORMS

[0023] The image exposure device of the present embodiment is described below with reference to the drawings. (Image exposure device)

[0024] First, a configuration of the image exposure device of the present embodiment is described. Fig. Figure 1 shows an exploded perspective view of an example of the image exposure device of the present embodiment. Furthermore, Figure 1 shows... Fig. 2 a cross-sectional view of an example of the image exposure device of the present embodiment.

[0025] As in Fig. 1 and Fig. 2 shown, includes an image exposure device 10 in the present embodiment an image display device 12 , a support section 21 and a slat film 16 The image display device 12 has several pixels 13 up. The support section 21 supports a light-sensitive recording medium 14 , on which a recorded image, which is displayed to one by the image display device 12 The displayed image corresponds to the recorded image. The louvered film 16 is between the image display device 12 and the support section 21 provided, and on the side of the support section 21 is a protective layer 17 planned. [Image display device]

[0026] It is possible to use a portable terminal such as a smartphone and a tablet PC, a liquid crystal display (LCD), a cathode ray tube (CRT), a light-emitting diode (LED), a plasma display device or the like as the image display device. 12 to use the present embodiment.

[0027] The image display device 12 includes multiple pixels 13 as a display section 32 to display a display image. Fig. 2 shows one pixel 13 as an example of the display section 32 The pixel 13 is a minimal unit of color information that forms an image display surface. The image display device 12 can display the display image by selecting the pixel 13 exhibits. On a pixel display surface of the image display device 12 are the pixels13 arranged two-dimensionally. Two-dimensional means a state that extends in the X and Y directions. Fig. 1 extends. By adjusting the distance (pixel pitch) between adjacent pixels to 13 to 200 µm or less, the impression of the recorded image as a natural image can be enhanced. Therefore, the distance of the pixel is 13 preferably 150 µm or less, more preferably 125 µm or less and even more preferably 85 µm or less.

[0028] A glass window 26 to protect the pixel 13 is provided on a surface side that is exposed to light from the image display device 12 is irradiated. The thickness of the glass window. 26 is preferably thin to reduce the distance from the pixel 13 to the light-sensitive recording medium 14 to shorten.

[0029] Furthermore, Fig.3. A block diagram showing an example of a functional configuration of the image display device 12 of the present embodiment. The image display device 12 The present embodiment includes a control system. 30 and the display section 32 .

[0030] The control 30 causes the display section 32 , to display the input image represented by the input image data. Furthermore, the controller controls 30 of the present embodiment the display section 32 , to display the image where the image quality of the input image is degraded by highlighting a density difference of a high-frequency component of the input image.

[0031] The display section 32 The pixel described above includes 13 and emits light according to the direction through the pixel 13 The displayed image is shown. For the display section32 For example, a liquid crystal in which a lamp, such as a backlight, emits light, or a light-emitting diode in which the display section 32 It can be used even if it emits light.

[0032] Next, a hardware configuration of the image display device will be discussed. 12 with reference to Fig. 4 described. As in Fig. As shown in 4, the image display device 12 a computer that has a central processing unit (CPU) 40 , a storage 42 as a temporary storage area and a non-volatile storage section 46 includes, on. In addition, the image display device includes 12 the display section described above 32 and an input section 48 The CPU 40 , the storage 42 , the storage section 46 , the input section 48and the display section 32 are via a bus 49 tied together.

[0033] The storage section 46 This is implemented using a hard disk drive (HDD), a solid-state drive (SSD), flash memory, and the like. An image processing program 50 is in the memory section 46 stored as a storage medium. The CPU 40 The image processing program reads 50 from the memory section 46 , expands the image processing program that was read 50 in the storage 42 and then runs the image processing program 50 off. In a case where the CPU 40 the image processing program 50 when the CPU is executing, it functions 40 as the in Fig. 3 control units shown 30 .

[0034] Image data of the input image, in other words, image data that corresponds to the display section 32 The displayed image will correspond to the input section. 48 The image data of the input image can be entered from the outside of the image display device. 12 or the image exposure device 10 be entered, or, in a case where the image display device 12 or the image exposure device 10 Even if it has a function of forming or recording an image, the image display device can be used. 12 or the image exposure device 10 Image data created or recorded can be entered. [Support section]

[0035] The support section 21 In the present embodiment, the light-sensitive recording medium is supported 14in a state in which it is positioned in a location that is illuminated by light from the image display device 12 is facing the irradiated surface. The support section 21 can the light-sensitive recording medium 14 directly or indirectly support, and the structure of this is not particularly limited as long as the support section 21 is able to use the light-sensitive recording medium 14 to support. [Light-sensitive recording medium]

[0036] As in Fig. As shown in Figure 2, the light-sensitive recording medium 14 In the present embodiment, an exposure surface 14A is provided. The light-sensitive recording medium 14 is not particularly limited, as long as the light-sensitive recording medium 14 by light emitted from the image display device 12The light is emitted, exposed, and can form the recorded image. For example, it is possible to use a film cassette. 18 to be used, which is loaded into an instant camera (for example, manufactured by Fujifilm Corporation, Instax (registered trademark), (trade name: Cheki)).

[0037] The film cassette 18 is formed by the light-sensitive recording medium 14 into a case 20 is installed. A light-blocking sheet (not shown) is placed between several light-sensitive recording media. 14 provided for, which in the housing 20 are provided for, and only the light-sensitive recording medium 14 , which is on the top surface of the film cassette 18 The light-blocking sheet exposes the film cartridge loaded into the Instax camera. 18(registered trademark) is used, the light-sensitive recording medium 14 and the light-blocking sheet was incorporated into the film. As a material suitable for the light-sensitive recording medium. 14 Examples of materials used include photographic light-sensitive materials such as negative film, reversal film, printing paper, and instant film of the monosheet or decal type.

[0038] As in Fig. Figure 2 shows several of the light-sensitive recording media. 14 in a box-shaped housing 20 Packaged with light protection. Inside the case 20 is an exposure aperture 22 provided by the image display device 12 emitted light passes through to reach the exposure surface of the light-sensitive recording medium. 14 to expose. In addition, one of the exposure apertures 22A pressing element (not shown) is provided on the opposite side, and the light-sensitive recording medium. 14 The pressing element is moved towards the side of the exposure aperture. 22 pressed towards it. Therefore, the light-sensitive recording medium is... 14 against the periphery of the exposure aperture 22 pressed, the distance to the image display device 12 becomes smaller, and on the light-sensitive recording medium 14 A favorable image can be recorded.

[0039] It is possible to use a resin element, which is used for various recording materials such as a photographic photosensitive material, a magnetic recording material and an optical recording material, for a recording material as the housing. 20to use. The resin element for the recording material refers to a housing, a lid and any complementary accessories used to contain, package, coat, protect, transport, store or support the shape of the recording material or various elements that hold the recording material and have a function.

[0040] The light-sensitive recording medium 14 After exposure, the light is passed between deployment rollers (not shown), causing a section of the sleeve provided in the photosensitive recording medium to break. A developing fluid is encapsulated in this sleeve section, and the breakage of the sleeve section causes the developing fluid to enter the photosensitive recording medium. 14distributed. After one to several minutes, the development process has progressed sufficiently, and a recorded image is transferred to the light-sensitive recording medium. 14 educated. [Laminated film]

[0041] An example of the slat film 16 The present embodiment is described with reference to Fig. 5 and Fig. 6 described. Fig. Figure 5 is a schematic cross-sectional view of an example of the image exposure device. 10 of the present embodiment and is a diagram to illustrate a direction of travel of light from the pixel 13 . Fig. 6 is a diagram showing a configuration of an example of the louvered film. 16 of the present embodiment. A reference numeral 16A denotes a planar surface 16A the slat film 16 , and a reference mark 16B identifies a side surface 16Bthe slat film 16 . in the louvered foil 16 are translucent sections 102 , which allow light to pass through, and light-blocking sections 104 , which block light, alternating in the first direction (X-direction in the planar surface) 16A in Fig. 4) arranged on a surface parallel to a surface on which the pixels 13 the image display device 12 are set up. The translucent sections 102 and the light-blocking sections 104 , which are arranged in the first direction of the present embodiment, are examples of the first light-transmitting sections and the first light-shielding sections of the present disclosure.

[0042] Additionally, the lamella foil 16 the translucent sections 102 and the light-blocking sections 104alternating in the second direction (Y-direction in the planar surface) 16A in Fig. 4) arranged perpendicular to the first direction on the surface parallel to the surface on which the pixels of the image display device are arranged. The translucent sections 102 and the light-blocking sections 104 , which are arranged in the second direction of the present embodiment, are examples of the second light-transmitting sections and the second light-shielding sections of the present disclosure.

[0043] As described above, in the present embodiment the light-transmitting sections 102 arranged two-dimensionally, and the light-shielding sections 104 are formed in a lattice shape. In such a configuration, as in Fig. Shown in section 5 is an angle of light emitted from the pixel. 13 the image display device 12on the exposure surface 14A of the light-sensitive recording medium 14 The radiation is limited. The lamella foil 16 The present embodiment is an example of a limiting element of the present disclosure.

[0044] The pixel 13 the image display device 12 Light is emitted from a display surface in all directions within a 180° range. The emitted light passes through the display device. 12 planned glass windows 26 and falls onto the slatted film 16 one. With the light that falls on the louvered film 16 Light entering the device passes through a straight line parallel to the image display device. 12 and the light-sensitive recording medium 14 connects the translucent sections 102 the slat film 16Furthermore, regarding the straight line that the image display device 12 and the light-sensitive recording medium 14 connects, obliquely emitted light through the light-shielding sections 104 in the slat film 16 blocked. By limiting the angle of the image display device 12 The emitted light produces an image quality on the light-sensitive recording medium. 14 improved recorded image.

[0045] The translucent sections 102 They only need to be able to transmit light and can be made using a glass material, transparent silicone rubber, or the like. Additionally, sections of the translucent sections can be... 102 as cavities, and it may be that the lamellar foil 16 only from the light-blocking sections 104consists of the light-blocking sections. 104 They can be a light-absorbing element that absorbs light, or a light-reflecting element that reflects light. A light-shielding element 106 , which are the light-shielding sections 104 For the filter element, a colored resin material, such as black silicone rubber, can be used. Additionally, a neutral density filter (ND filter) can be used as the light-absorbing material. The ND filter is a filter with a neutral optical density and can absorb light uniformly within a wavelength range used for exposure without affecting the wavelength (absorption from 50% or more to 99.999% or less; light transmission from 0.001% or more to 50% or less).

[0046] The configuration of the louvered film 16 is not limited to the present embodiment. Fig.Figure 7 shows a configuration of another example of the louvered film. 16 The in Fig. 6 shown louvered foil 16 is formed from a single layer, as in the side surface 16B shown, and the translucent sections 102 and the light-blocking sections 104 They are arranged alternately in one layer in the first direction and in the second direction. Thus, the lamella foil 16 formed with a two-dimensional arrangement.

[0047] The in Fig. 7 shown louvered foil 16 On the other hand, it consists of two layers, the first layer 118 and the second layer 119 A reference mark 16B identifies a side surface of the lamellar film 16 , a reference mark 118A characterizes a planar surface of the first layer 118 and a reference mark 119Acharacterizes a planar surface of the second layer 119 As in the planar surface 118A the first shift 118 shown, the first layer 118 translucent sections 102 and light-blocking sections 104 on, which are arranged alternately only in the first direction (X-direction in the planar surface) 118A in Fig. 7) In the second shift 119 are translucent sections 102 and light-blocking sections 104 alternately arranged only in the second direction perpendicular to the first direction (Y-direction in the planar surface) 119A in Fig. 7) The two-dimensional louvered foil 16 is achieved by laminating the first layer 118 and the second layer 119 formed. Even in a case where the two-dimensional lamellar film 16Since it is formed from several layers, it can therefore have the same effect as a lamellar film formed from a single layer. 16 will be obtained.

[0048] A distance P the light-blocking sections 104 (slats) of the slat film 16 preferably is 80 µm or less and more preferably 65 µm or less, as will be described later in a “lamella spacing experiment”. In a case where the spacing P the light-blocking sections 104 If it is set so that it lies within the area described above, it is possible to capture obliquely emitted light from the pixel. 13 to block emitted light and improve the image quality of the recorded image.

[0049] The light-blocking sections 104 can be used with a difference in an angle between the XY axes of the pixel as a reference for the arrangement of the pixel. 13and an angle between the XY axes of the lamella as the reference for the arrangement of the translucent sections 102 and the light-shielding sections 104 the slat film 16 to be arranged. That is, in a case where the first direction and the second direction are not parallel, they do not have to be vertical. Moiré of the recorded image is suppressed by the pixel 13 with the difference in the angle between the XY axes of the pixel 13 and is arranged along the XY axes of the lamella. The difference in angle is preferably 1 degree to 45 degrees, more preferably 5 degrees to 40 degrees, and even more preferably 10 degrees to 35 degrees.

[0050] The thickness t the slat film 16The thickness, as later described as the "lamella layer thickness experiment", is preferably 1.5 mm or more and 4.0 mm or less, more preferably 2.0 mm or more and 4.0 mm or less, and even more preferably 2.5 mm or more and 4.0 mm or less. By increasing the thickness t the slat film 16 Oblique light can be blocked at a small angle to parallel light. Furthermore, in a case where the thickness t the slat film 16 If the thickness is increased, the recorded image will likely be blurry, and therefore the thickness is t the slat film 16 preferably in the area described above. The thickness t the slat film 16 is the thickness of a layer in a case where it consists of a layer as in the Fig. 6 shown lamella foil 16 is formed, and the total thickness of several layers is the thickness of the lamellar film. 16in a case where they consist of several layers, such as two layers, the first layer and the second layer, as in the case of the Fig. 7 shown lamella foil 16 is formed. [Protective layer]

[0051] The protective layer 17 will be on the side of the support section 21 the slat film 16 , as in Fig. 1 to Fig. 3 shown, provided. The protective layer 17 protects the slat film 16 in a case where the light-sensitive recording medium 14 and the slat film 16 They are in contact with each other during exposure. The protective layer 17 prevents the slat film from 16 by repeated exposure of the image on the display device 12 displayed image onto the light-sensitive recording medium 14 is damaged or broken.

[0052] The protective layer 17 is not particularly restricted as long as it is transparent and can let light through. For the protective layer 17 For example, a plastic sheet made from an acrylic resin, a polycarbonate, a vinyl chloride resin or the like can be used.

[0053] The thickness of the protective layer 17 preferably 0.1 µm to 500 µm. In a case where the protective layer 17 If it has a thickness of 0.1 µm or more, it is possible to add to the protective effect of the lamellar film 16 to make moiré inconspicuous. Furthermore, it is possible to conceal a moiré pattern caused by a defect or the structure of the lamellar film. 16 to make the resulting image defect inconspicuous. Furthermore, in a case where the protective layer 17 a thickness of 500 µm or less prevents the recorded image from becoming blurry.

[0054] Next, the operation of the control system will be performed. 30 the image display device 12 This embodiment is described. As described above, the angle of the image display device is 12 light emitted through the lamellar film 16 limited, and the light that is parallel to the straight line that forms the image display device 12 and the light-sensitive recording medium 14 connecting, passes through the translucent sections 102 the slat film 16 In fact, however, as in Fig. 8 shown, light emitted from a point light source 15 of the display section 32 It is emitted and diffused. In particular, it is diffused according to the height. H the light-blocking sections 104 and the width Q of the light and the translucent section 102a light component is transmitted at a predetermined angle, that is, diffused. Due to the in Fig. 9 diffuse light component shown in the recorded image, which is on the light-sensitive recording medium 14 What is recorded is a density difference of a high-frequency component (boundary section) E compared to the displayed image, the density is reduced. This means that in the recorded image, since the density difference is small, the edge section tends to be difficult to visually discern, and consequently there is a significant concern that the recorded image may become blurry.

[0055] If the thickness t the slat film 16 As the amount of light increased, it decreases the amount of light emitted by the image display device. 12 to the light-sensitive recording medium 14 This results in an extremely long exposure time, which is a problem. Furthermore, as described in the... Fig.7. Example shown, in a case where the louvered film 16 It is formed from several layers, and light diffuses in the directions through the light-blocking sections. 104 Not every layer is shielded, and therefore blurring of the recorded image is likely. If the thickness of the protective layer 17 Furthermore, the distance from the exposure surface 14A of the light-sensitive recording medium increases. 14 to, and the angle of light is in the protective layer 17 not limited, and therefore a blurring of the recorded image is likely to occur.

[0056] Therefore, in the present embodiment, the control 30 the image display device 12Image processing is performed to increase (highlight) the high-frequency component (edge ​​section) of the display image in advance, taking into account the fact that the density difference is reduced in the recorded image and not in the display image.

[0057] Fig. Figure 10 shows a flowchart of an example of image processing controlled by the 30 the present embodiment. Fig. The image processing shown in step 10 is performed in a case where the CPU 40 the image processing program 50 executes.

[0058] In step S100, in Fig. As shown in 10, the control 30 Highlighting processing of high-frequency components of the input image data is performed to emphasize the density difference of the high-frequency component of the input image. In the present embodiment, the controller performs this task. 30Unsharp mask processing is used as an example of highlighting processing of high-frequency components.

[0059] In particular, an unsharp mask is first generated. For the generation of the unsharp mask, for example, a two-dimensional Gaussian distribution is used, where f(x, y) is a filter coefficient and the degree of distribution is a standard deviation σ, as shown in the following formula (1). [Formula 1] f ( x , y ) = 1 2 π σ 2 e − x 2 + y 2 2 σ 2 The standard deviation σ in the above formula (1) is a Gaussian distribution, that is, the radius of blur of a blurred image, and is characterized by the number of pixels in the present embodiment.

[0060] Multiplying the input image by the unsharp mask shown in formula (1) generates the blurred image from the input image, as shown in Fig. Shown in 11A.

[0061] Furthermore, the control system generates 30, as in Fig. Figure 11B shows an image with high-frequency components resulting from a difference between the input image and the blurred image. As shown in Fig. As shown in Figure 11B, the difference in the image with high-frequency components is particularly large in the area where there is a large difference in gradation.

[0062] Furthermore, the control adds 30 , as in Fig. Figure 11C shows how the image containing the high-frequency component is added to the input image according to weight W to create a display image in which the high-frequency component is emphasized. This means that the display image is in a state where the image quality is degraded compared to the input image.

[0063] In a case where the resolution of the image display device 12 If the pixel density is 325 ppi (pixels per inch), the area of ​​the unsharp mask to be applied to the input image is preferably a specific area.M1 , which is represented by the following formula (2), preferably a range M2 , which is represented by the following formula (3), and more preferably a range M3 , which is represented by the following formula (4), as later described as the “high-frequency component highlighting experiment”, in a case where the standard deviation σ is denoted by x and the weight W is denoted by y, as in Fig. 12 shown. − 0,1 × x + 0,30 < y < − 0,1 × x + 1,00 − 0,1 × x + 0,40 < y < − 0,1 × x + 0,90 − 0,1 × x + 0,50 < y < − 0,1 × x + 0,80

[0064] In a case where the resolution of the image display device 12If X ppi is a certain value, an unsharp mask can be applied that corresponds to a region obtained by multiplying the standard deviation σ of the above formulas (2) to (4) by the number obtained by dividing X by 325. In particular, an unsharp mask can be applied that corresponds to the regions M1 to M3 corresponds to each of the following formulas (5) to (7). − 0,1 × x × ( X ÷ 325 ) + 0,30 < y < − 0,1 × x × ( X ÷ 325 ) + 1,00 − 0,1 × x × ( X ÷ 325 ) + 0,40 < y < − 0,1 × x × ( X ÷ 325 ) + 0,90 − 0,1 × x × ( X ÷ 325 ) + 0,50 < y < − 0,1 × x × ( X ÷ 325 ) + 0,80

[0065] After the highlighting processing of high-frequency components has been carried out in this way, the control system initiates 30 In the next step S102, that the display section 32 The display image shows the high-frequency component and completes the main image processing. [Effect experiment of an image exposure device]

[0066] Next, an experimental result on the effect of the image exposure device will be presented. 10 shown in the present embodiment. (Basic experiment)

[0067] In the experiment, the image display device is used. 12 It uses an IGZO 20.066 cm (7.9-inch) display with a resolution of 325 ppi. Furthermore, the support section 21 a metal plate, and the light-sensitive recording medium 14 is an Instax film. Like the lamellar film. 16 Furthermore, a lamellar film is used, in which the first layer 118 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104 with a thickness of 15 µm, arranged alternately only in the first direction, and the second layer 119 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104The layers, each 15 µm thick, are laminated and arranged alternately in the second direction, perpendicular to the first. The thickness of each layer of the lamellar film 16 is set to 1.5 mm. Furthermore, the thickness of the protective layer is... 17 The lamellar film is set to 0.2 µm on each surface. 16 by 30 degrees with respect to a pixel arrangement (XY axes) of the display section 32 turned.

[0068] The display image consists of a general photographic image in which a landscape or a person is the object, and an evaluation image in which a contrast transfer function (CTF) is set to 60% to determine the resolution. Additionally, an image in which the high-frequency component is not emphasized (the edge section is emphasized) is used as a reference image for the recorded image of the present embodiment. In other words, the recorded image is used in a case where the image not used for image processing by the controller 30 was subjected to the process when the input image is used, when the comparison image is used. Hereinafter, a recorded image to which a highlighted radio frequency image of the present embodiment is applied may be referred to as a "highlighted image" to distinguish the recorded image from the comparison image.

[0069] In the highlighting (edge ​​highlighting) processing of high-frequency components, the standard deviation σ is set to 2 pixels, the weight W is set to 0.5, and the unsharp mask processing is performed using the two-dimensional Gaussian distribution shown in (1) above.

[0070] An image quality evaluation method is a sensory evaluation by an evaluation expert who assesses the resolution of the photograph in terms of whether the blurred feeling of the highlighted image is reduced in relation to the comparison image or not, and whether the image has good visibility and is preferable or not.

[0071] One evaluation result is that the visibility of the highlighted image is good, both for the general photographic image and for the CTF evaluation image.

[0072] Furthermore, it shows Fig.13. A relationship between a distance of the image (a distance from black and white) and the CTF of the comparison image and the highlighted image, using the CTF-rated image as the input image. As in Fig. As shown in Figure 13, the contrast of the high-frequency component in the highlighted image is increased compared to the comparison image. (Slat spacing experiment)

[0073] In the experiment, the image display device is used. 12 It uses an IGZO 20.066 cm (7.9-inch) display with a resolution of 325 ppi. Furthermore, the support section 21 a metal plate, and the light-sensitive recording medium 14 is an Instax film. It is also known as the lamellar film. 16 one of two types, which have different slat spacings P They are used if they exhibit and meet the following conditions A and B.

[0074] A: The first layer 118, in which translucent sections 102 with a thickness of 60 µm and light-shielding sections 104 with a thickness of 15 µm, arranged alternately only in the first direction, and the second layer 119 , in which translucent sections 102 with a thickness of 60 µm and light-shielding sections 104 The layers, each 15 µm thick and arranged alternately in the second direction perpendicular to the first, are laminated. Furthermore, the thickness of each layer is 2.0 mm, and the thickness of the protective layer is... 17 on each surface 0.2 µm, angled at 45 degrees with respect to the pixel arrangement (XY axes) of the display section 32 has been rotated.

[0075] B: The first layer 118 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104with a thickness of 15 µm, arranged alternately only in the first direction, and the second layer 119 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104 The layers, each 15 µm thick and arranged alternately in the second direction perpendicular to the first, are laminated. Furthermore, the thickness of each layer is 2.0 mm, and the thickness of the protective layer is... 17 on each surface 2.0 mm (thickness t = 4.0 mm), angled by 30 degrees with respect to the pixel arrangement (XY axes) of the display section 32 has been rotated.

[0076] For comparison with a case where the slat film 16 when applied under the conditions of “A” or “B”, another aspect is considered where the lamella foil 16 not applied, described below as “C”.

[0077] The display image is a generic photograph in which a landscape or a person is the subject. Additionally, an image in which the high-frequency component is not emphasized (the edge section is highlighted) is used as a comparison image.

[0078] In the highlighting (edge ​​highlighting) processing of high-frequency components, the standard deviation σ is set to 2 pixels, the weight W is set to 0.5, and the unsharp mask processing is performed using the two-dimensional Gaussian distribution shown in (1) above.

[0079] An image quality evaluation method is a sensory evaluation by an evaluation expert who assesses the resolution of the photograph in terms of whether the blurred feeling of the highlighted image is reduced in relation to the comparison image or not, and whether the image has good visibility and is preferable or not.

[0080] The evaluation results are shown in Table 1 below. Table 1 rates image quality in four levels from I to IV. “I” indicates the best visibility, “II” represents good visibility, “III” represents improved image blur, and “IV” represents poor visibility, in other words, the image is blurry. [Table 1] First shift Second shift Thickness (mm) Image quality Distance (µm) Transmissible width (µm) Light-blocking width (µm) Distance (µm) Transmissible width (µm) Light-blocking width (µm) A 75 60 15 75 60 15 4,0 II B 60 45 15 60 45 15 4,0 I C - - - - - - - IV

[0081] As shown in Table 1 described above, it can be seen that in a case where the lamellar foil 16under condition A, the visibility of the highlighted image is good, and that in a case where the louvered film 16 Under condition B, the visibility of the highlighted image is highest. Furthermore, it can be seen that under the aforementioned condition C, that is, in a case where the louvered film 16 It is not applied, it is blurry.

[0082] Therefore, according to the present experiment, as described above, the lamella spacing is P preferably 80 µm or less and more preferably 65 µm or less. (Lamellar layer thickness experiment)

[0083] In the experiment, the image display device is used. 12 It uses an IGZO 20.066 cm (7.9-inch) display with a resolution of 325 ppi. Furthermore, the support section 21 a metal plate, and the light-sensitive recording medium 14is an Instax film.

[0084] When the slat film 16 Furthermore, the lamellar foil 16 used in which the first layer 118 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104 with a thickness of 15 µm, arranged alternately only in the first direction, and the second layer 119 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104 The laminated sheets are 15 µm thick and alternately arranged only in the second direction perpendicular to the first. Furthermore, the lamellar film... 16 by 30 degrees in relation to the pixel arrangement (XY axes) of the display section 32 turned.

[0085] Six types of louvered film are used. 16 manufactured where the conditions of thickness (thickness) t) each layer can be varied. In condition B, the thickness of each layer is set to 2.0 mm (thickness t = 4.0 mm), in condition D, the thickness of each layer is set to 1.5 mm (thickness t = 3.0 mm), in condition E In condition F, the thickness of each layer is set to 1.5 mm (thickness t = 3.0 mm); in condition F, the thickness of each layer is set to 1.25 mm (thickness t = 2.50 mm); in condition G, the thickness of each layer is set to 1.0 mm (thickness t = 2.0 mm); and in condition H The thickness of each layer is set to 0.75 mm (thickness t = 1.5 mm). The thickness of the protective layer 17 On each surface under conditions B and D, the thickness is set to 0.2 µm, and the thickness of the protective layer 17 on any surface under the conditions E F, G, H is set to 0.1 µm. Furthermore, for comparison, the aspect at which the lamellar film... 16 not applied, described below as “C”.

[0086] The display image is a generic photograph in which a landscape or a person is the subject. Additionally, an image in which the high-frequency component is not emphasized (the edge section is highlighted) is used as a reference image for the recorded image of the present embodiment.

[0087] In the highlighting (edge ​​highlighting) processing of high-frequency components, the standard deviation σ is set to 2 pixels, the weight W is set to 0.5, and the unsharp mask processing is performed using the two-dimensional Gaussian distribution shown in (1) above.

[0088] An image quality evaluation method is a sensory evaluation by an evaluation expert who assesses the resolution of the photograph in terms of whether the blurred feeling of the highlighted image is reduced in relation to the comparison image or not, and whether the image has good visibility and is preferable or not.

[0089] The evaluation results are shown in Table 2 below. Table 1 rates image quality in four levels from I to IV. "I" indicates the best visibility, "II" represents good visibility, "III" represents improved image blur, and "IV" represents poor visibility, in other words, the image is blurry. [Table 2] First shift Second shift Thickness (mm) Image quality Distance (µm) Transmissible width (µm) Light-blocking width (µm) Distance (µm) Transmissible width (µm) Light-blocking width (µm) B 60 45 15 60 45 15 4,0 I C - - - - - - - IV D 60 45 15 60 45 15 3,0 I E 60 45 15 60 45 15 3,0 I F 60 45 15 60 45 15 2,5 I G 60 45 15 60 45 15 2,0 I H 60 45 15 60 45 15 1,5 II

[0090] Therefore, as shown in Table 2 and as described above, the thickness is t the slat film 16preferably 1.0 mm or more and 4.0 mm or less, more preferably 1.5 mm or more and 4.0 mm or less and even more preferably 2.0 mm or more and 4.0 mm or less. (High-frequency component highlighting experiment)

[0091] In the experiment, the image display device is used. 12 It uses an IGZO 20.066 cm (7.9-inch) display with a resolution of 325 ppi. Furthermore, the support section 21 a metal plate, and the light-sensitive recording medium 14 is an Instax film. Like the lamellar film. 16 Furthermore, the lamellar film is used, in which the first layer 118 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104 with a thickness of 15 µm, arranged alternately only in the first direction, and the second layer 119 , in which translucent sections 102with a thickness of 45 µm and light-shielding sections 104 The layers, each 15 µm thick, are laminated and arranged alternately in the second direction, perpendicular to the first. The thickness of each layer of the lamellar film 16 will be reduced to 1.5 mm (thickness) t = 3.0 mm). Furthermore, the thickness of the protective layer is set. 17 The lamellar film is set to 0.2 µm on each surface. 16 by 30 degrees with respect to a pixel arrangement (XY axes) of the display section 32 turned.

[0092] The display image is a generic photograph in which a landscape or a person is the subject. Additionally, an image in which the high-frequency component is not emphasized (the edge section is highlighted) is used as a reference image for the recorded image of the present embodiment.

[0093] Furthermore, in the highlighting (edge ​​highlighting) processing of high-frequency components, unsharp mask processing is performed using the two-dimensional Gaussian distribution shown in (1), described above, by determining the standard deviation σ and the weight W as in Fig. 14 shown, will be changed.

[0094] An image quality evaluation method is a sensory evaluation by an evaluation expert who assesses the resolution of the photograph in terms of whether the blurred feeling of the highlighted image is reduced in relation to the comparison image or not, and whether the image has good visibility and is preferable or not.

[0095] Fig. Figure 14 shows the evaluation result. In Fig. In section 14, image quality is rated in four levels. Fig.14 “A” indicates the best visibility, “B” indicates that visibility is good, “C” indicates that the blurriness of the image is improved, and “D” indicates that visibility is poor, in other words, it indicates that the image is blurry.

[0096] Therefore, as in Fig. As shown in 14 and as described above, the unsharp mask area prefers the area M1 , which is represented by the formula (2) described above, in which the standard deviation σ is denoted by x and the weight W is denoted by y, is the range M2 , which is represented by the formula (3) described above, is preferred and is the area M3 , which is represented by the formula (4) described above, is even more preferred.

[0097] Regarding the thickness of the lamellar film 16Similar results will be obtained in a case where an experiment is carried out in the same manner as described above, with each layer having a thickness of 1.25 mm (thickness t = 2.5 mm), 1.00 mm (thickness t = 2.0 mm), and 0.75 mm (thickness t = 1.5 mm). In other words, in a case where the thickness of each layer of the lamellar film 16 The area of ​​the unsharp mask is preferably 1.5 mm, 1.25 mm, 1.00 mm and 0.75 mm. M1 , which is represented by the formula (2) described above, in which the standard deviation σ is denoted by x and the weight W is denoted by y, is the range M2 , which is represented by the formula (3) described above, is preferred and is the area M3 , which is represented by the formula (4) described above, is even more preferred. (Distance experiment between display image and exposure surface)

[0098] In the experiment, the image display device is used. 12 It uses an IGZO 20.066 cm (7.9-inch) display with a resolution of 325 ppi. Furthermore, the support section 21 a metal plate, and the light-sensitive recording medium 14 is an Instax film. Like the lamellar film. 16 Furthermore, the lamellar film is used, in which the first layer 118 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104 with a thickness of 15 µm, arranged alternately only in the first direction, and the second layer 119 , in which translucent sections 102 with a thickness of 45 µm and light-shielding sections 104 The layers, each 15 µm thick, are laminated and arranged alternately in the second direction, perpendicular to the first. The thickness of each layer of the lamellar film 16is set to 1.5 mm. Furthermore, the thickness of the protective layer is... 17 The lamellar film is set to 0.2 µm on each surface. 16 by 30 degrees with respect to a pixel arrangement (XY axes) of the display section 32 turned.

[0099] Furthermore, in the present experiment, glass substrates (D263 Teco thin glass / manufactured by SCHOTT) with different thicknesses of 0.5 mm, 1.0 mm and 1.5 mm are placed between the lamellar film. 16 and the exposure surface 14A of the light-sensitive recording medium 14 The experiment is planned and will be carried out. Since the refractive index n is 1.5, the thickness in the atmosphere is a value obtained by dividing the thickness of the glass substrates described above by 1.5.

[0100] The display image is a generic photograph in which a landscape or a person is the subject. Additionally, an image in which the high-frequency component is not emphasized (the edge section is highlighted) is used as a reference image for the recorded image of the present embodiment.

[0101] In the highlighting (edge ​​highlighting) processing of high-frequency components, the standard deviation σ is set to 2 pixels, the weight W is set to 0.5, and the unsharp mask processing is performed using the two-dimensional Gaussian distribution shown in (1) above.

[0102] An image quality evaluation method is a sensory evaluation by an evaluation expert who assesses the resolution of the photograph in terms of whether the blurred feeling of the highlighted image is reduced in relation to the comparison image or not, and whether the image has good visibility and is preferable or not.

[0103] As a result of the evaluation, the visibility of the highlighted image is particularly excellent in a case where the glass substrate thickness is 0.5 mm, and in a case where the glass substrate thickness is 1.0 mm. Furthermore, in a case where the glass substrate thickness is 1.5 mm, the visibility of the highlighted image is better than that of the comparison image, although it is inferior to the case described above.

[0104] In other words, in a case where the distance between the louvers is 16and the exposure surface 14A is 0.5 mm and 1.0 mm, the visibility of the highlighted image is particularly excellent, and even in a case where the distance between the lamellar film 16 and the exposure surface 14A is 1.5 mm, the visibility of the highlighted image is excellent.

[0105] Therefore, according to the present experiment, it can be seen that the surface ( 16A ) the louvered foil 16 and the exposure surface 14A of the light-sensitive recording medium 14can be exposed at a predetermined distance. Furthermore, it can be seen that the thickness of the glass substrate with a refractive index n of 1.5 for the predetermined distance is preferably 1.50 mm or less, more preferably 1.00 mm or less, and even more preferably 0.50 mm or less. In a case where the above is converted into the thickness in the atmosphere with a refractive index n of 1.0, it can be seen that the thickness is preferably 1.00 mm or less, more preferably 0.67 mm or less, and even more preferably 0.33 mm or less.

[0106] As described above, the image exposure device includes 10 according to the present embodiment, an image display device 12 , which are multiple pixels 13 exhibits and light according to a through the multiple pixels 13 the displayed image; a support section 21 , which is a light-sensitive recording medium 14for recording a recorded image according to the display image in a state in which an exposure surface 14A of the light-sensitive recording medium is supported. 14 the image display device 12 is facing; a slatted film 16 , which are between the image display device 12 and the support section 21 is provided and an angle of the image display device 12 to the light-sensitive recording medium 14 emitted light is limited; and a control system is in place. 30 , which is the image display device 12 controls to display the display image, where the image quality of an input image represented by input image data is degraded by highlighting a density difference of a high-frequency component of the input image.

[0107] As described above, the controller 30 the image display device 12in the image exposure device 10 of the present embodiment the display section 32 , to display the image where the image quality of the input image is degraded by highlighting a density difference in the high-frequency component of the input image. This is on the light-sensitive recording medium. 14 The recorded image is affected by the diffusion of light through the lamellar film. 16 Transmitted light results in a less sharp image than the displayed image, but the image has the same image quality as the input image. That is, according to the image exposure device. 10 In the present embodiment, even in a case where the image quality of the display image is degraded, the image quality of the recorded image is the same as the image quality of the input image.

[0108] Therefore, according to the image exposure device 10In the present embodiment, it is possible to suppress the blurriness of the recorded image and to improve the image quality compared to a case where the lamellar film 16 It is simply intended.

[0109] In the present embodiment, the aspect described is that unsharp mask processing is defined as the highlighting processing of high-frequency components by the control 30 is carried out, but the present invention is not limited to this embodiment, and, for example, folding processing or the like can be applied.

[0110] Furthermore, for example, the structure of the lamellar film 16 not limited, and furthermore it is not limited as long as it is a limiting element capable of controlling the angle of the image displayed by the image display device 12to limit the emitted light. For example, the translucent sections can be 102 and the light-blocking sections 104 They can be arranged aperiodically, and a capillary plate or the like, in which holes are formed randomly, can be used as the limiting element.

[0111] Additionally, in the present embodiment, the aspect was described in which the protective layer 17 on the side of the support section 21 the slat film 16 is planned, but a position where the protective layer 17 The intended design is not limited to this embodiment and can, for example, be located on the side of the support section. 21 the slat film 16 as well as on the side of the image display device 12 be provided. In other words, the protective layer can 17 on both sides of the louvered film 16, through which light passes, are provided. In a case where the protective layer 17 on both sides of the louvered film 16 If it is intended that the defect or structure of the lamellar film be taken into account, it is possible to 16 to make the resulting image defect inconspicuous.

[0112] Additionally, in the present embodiment, the aspect in which the image display device is described was described. 12 the control 30 includes, but the control 30 can be used as a device other than the image display device 12 can be configured. For example, a CPU, such as in a smartphone, can be configured to run the image processing program. 50 execute to perform image processing by acting as the controller 30 functions, and the image display device 12can receive the image data processed by the smartphone and display a display image that corresponds to the image data on the display section 32 corresponds.

[0113] Furthermore, the image processing performed by the CPU, which executes the software (the program) in each of the embodiments described above, can be performed by processors other than the CPU. Examples of the processor in this case include a programmable logic device (PLD), whose circuit configuration can be modified after fabrication of a field-programmable gate array (FPGA) or the like, and a dedicated electrical circuit, which is a processor with a circuit configuration specifically designed to perform a particular processing task, such as an application-specific integrated circuit (ASIC) or the like.Furthermore, image processing can also be performed by one of these different processors or by a combination of two or more processors of the same or different types (for example, multiple FPGAs and combinations of CPUs and FPGAs). In particular, the electrical circuitry obtained by combining circuit elements such as semiconductor components can be used as the hardware architecture of these different processors.

[0114] In the embodiment described above, the aspect was described in which the image processing program 50 in the memory section 46 is stored (installed), but the present invention is not limited to this. The image processing program 50It can be provided in a format recorded on a recording medium, such as a CD-ROM (compact disk read-only memory), a DVD-ROM (digital versatile disk read-only memory), or a Universal Serial Bus (USB) storage device, and then made available. Furthermore, the image processing program can 50 can be downloaded over the network from an external device. Reference symbol list 10 Image exposure device 12 Image display device 13 pixels 14 light-sensitive recording medium, 14A exposure surface 15 Point light source 16 strips of foil, 16A Planar surface of a lamellar foil, 16B Side surface of a lamellar film 17 Protective layer 18 film cassettes 20 cases 21 Support section 22 exposure aperture 26 glass windows 30 Control 32 Display section 40 CPU 42 storage spaces 46 Storage section 48 Input section 49 Bus 50 image processing programs 102 translucent section 104 light-shielding section 106 light-blocking element 118 first shift, 118A Planar surface of a first layer 119 second shift, 119A Planar surface of a second layer E High-frequency component (edge ​​section) H height M1 to M3 range P Distance of a light-shielding section Q width t Thickness of a lamellar film QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2009037011 A [0003, 0005] US 9126396 B [0003, 0005]

Claims

[1] Image exposure device comprising: an image display device having multiple pixels and emitting light according to a display image represented by the multiple pixels; a support section that supports a photosensitive recording medium for recording a recorded image according to the display image in a state in which an exposure surface of the photosensitive recording medium is facing the image display device; a limiting element provided between the image display device and the support section, limiting the angle of the light emitted by the image display device onto the light-sensitive recording medium; and a controller that controls the image display device to display the display image, in which the image quality of an input image represented by input image data is degraded by highlighting a density difference of a high-frequency component of the input image. [2] Image exposure device according to claim 1, wherein the display image is an image in which an edge is more strongly emphasized than the recorded image. [3] Image exposure device according to claim 1 or 2, wherein the control emphasizes the density difference of the high-frequency component by unsharp mask processing. [4] Image exposure device according to claim 3, wherein the control performs the unsharp mask processing, which is weighted according to a resolution of the image display device. [5] Image exposure device according to claim 3 or 4, wherein in a case where a weight of the unsharp mask processing is characterized by y and a standard deviation of a degree of a two-dimensional Gaussian distribution used for the unsharp mask processing is characterized by x, the following formula (1) is satisfied, − 0,1 × x + 0,40 < y < − 0,1 × x + 0,90 [6] Image exposure device according to claim 3 or 4, wherein in a case where a weight of the unsharp mask processing is characterized by y, a standard deviation of a degree of a two-dimensional Gaussian distribution used for the unsharp mask processing is characterized by x, and a resolution of the image display device is characterized by X ppi (pixels per inch), the following formula (2) is satisfied, − 0,1 × x × ( X ÷ 325 ) + 0,40 < y < − 0,1 × x × ( X ÷ 325 ) + 0,90 [7] Image exposure device according to one of claims 1 to 6, wherein the limiting element is an optical element of an optical diffusion system. [8] Image exposure device according to claim 7, wherein the optical element is a lamellar film in which first light-transmitting sections that transmit light and first light-shielding sections that shield light are arranged alternately in a first direction on a surface parallel to a surface on which the pixels of the image display device are arranged, and second light-transmitting sections that transmit light and second light-shielding sections that shield light are arranged alternately in a second direction on the surface not parallel to the first direction. [9] Image exposure device according to claim 7, wherein the optical element is a lamellar film in which first light-transmitting sections that transmit light and first light-shielding sections that shield light are arranged alternately in a first direction on a surface parallel to a surface on which the pixels of the image display device are arranged, and second light-transmitting sections that transmit light and second light-shielding sections that shield light are arranged alternately in a second direction on the surface perpendicular to the first direction. [10] Image exposure device according to claim 8 or 9, wherein the lamellar film is formed by laminating a first layer in which the first light-transmitting sections and the first light-blocking sections are arranged alternately only in the first direction, and a second layer in which the second light-transmitting sections and the second light-blocking sections are arranged alternately only in the second direction. [11] Image exposure device according to one of claims 8 to 10, where the thickness of the lamellar foil is 2.0 mm or more and 4.0 mm or less, and where the lamella spacing of the lamella foil is 80 µm or less. [12] Image exposure device according to one of claims 1 to 11, wherein the limiting element is arranged at a predetermined distance from the light-sensitive recording medium. [13] Image exposure device according to claim 12, wherein the predetermined distance is 0.67 mm or less. [14] Image exposure method in an image exposure device comprising an image display device having multiple pixels and emitting light according to a display image represented by the multiple pixels, a support section supporting a photosensitive recording medium for recording a recorded image according to the display image in a state in which an exposure surface of the photosensitive recording medium is facing the image display device, and a limiting element provided between the image display device and the support section limiting an angle of the light emitted by the image display device onto the photosensitive recording medium, wherein the method comprises: Control of the image display device for displaying the display image, in which the image quality of an input image represented by input image data is degraded by highlighting a density difference of a high-frequency component of the input image. [15] Program for causing a computer to execute a process, wherein the computer controls an image exposure device comprising an image display device having multiple pixels and emitting light according to a display image represented by the multiple pixels, a support section supporting a photosensitive recording medium for recording a recorded image according to the display image in a state in which an exposure surface of the photosensitive recording medium is facing the image display device, and a limiting element provided between the image display device and the support section limiting an angle of the light emitted by the image display device onto the photosensitive recording medium, wherein the process comprises: Control of the image display device for displaying the display image, in which the image quality of an input image represented by input image data is degraded by highlighting a density difference of a high-frequency component of the input image.