Color perception capability measuring system

Abstract

The utility model provides a color perception capability measuring system. The projection screen is installed at the installation opening of the box body, the touch panel is arranged at the top of the box body, the projection equipment is arranged in the box body, the projection equipment projects a large color block in a specific hue angle direction to the projection screen, small color blocks are given in the middle of the large color block according to a certain saturation step length when the brightness is preset, and the upper computer is connected with the touch panel. The upper computer receives a user operation signal transmitted by the touch panel and outputs a test result according to the operation signal, and the lifting platform is arranged on one side of the box body, so that a user can adjust the distance between the eyes of the user and the projection screen through the lifting platform, and the viewing conditions of a small view field and a large view field are simulated; according to the utility model, the touch panel is arranged on the upper computer, observation can be respectively carried out at a proper distance meeting a 2-degree or 10-degree view field angle, a user can select through the touch panel at different view field angles, and the upper computer outputs a test result through a user operation signal transmitted by the touch panel, so that the user can know the own color perception ability level.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and specifically relates to a color perception ability measurement system. Background Art

[0002] The human eye has visual functions including color vision. Due to differences in the response ability to different spectra, there are differences in color discrimination ability. Different people will see different colors, the total amount of colors that can be perceived in different color regions is different, and there are also differences in the overall color perception ability.

[0003] Many methods for evaluating color perception ability have been summarized clinically. However, currently available methods for visually evaluating color perception ability all have common drawbacks: Since the explored color regions are not the same, the obtained results are hardly comparable, and it is even more impossible to fully reflect the color perception ability of the observer. Therefore, if we want to conduct a comprehensive and accurate study of color perception, we need to use a test system that includes precise thresholds and comprehensive color gamut coverage.

[0004] Laser display has the characteristic of a large color gamut, that is, it can achieve precise color reproduction of 1.07 billion colors. It is an accurate "ruler" that can be used to accurately measure and comprehensively evaluate the color perception ability of the human eye. According to Grassmann's law, the human eye's perception of color has three dimensions, namely lightness (brightness), saturation, and hue angle. Furthermore, through precisely designed psychophysical experiments, the color discrimination ability of each person in different hue angle directions can be measured. That is, within the color gamut plane with a fixed brightness (usually set to 50), the size of the polygon obtained through testing represents the color discrimination ability of the human eye. The larger the area, the better the color perception ability. At the same time, the shape of the polygon can reflect the resolution ability of different colors and identify colors with possible color weakness. Therefore, there is an urgent need for a measurement system that can specifically study the color perception ability of the human eye. Summary of the Utility Model

[0005] In view of this, the embodiments of the utility model provide a color perception ability measurement system to measure the color perception ability of the human eye.

[0006] To achieve the above object, the embodiments of the utility model provide the following technical solutions:

[0007] A color perception ability measurement system includes: a host computer, a box body, a projection device, a projection screen, a touch panel, and a lifting platform;

[0008] An installation opening for installing the projection screen is provided at the top of the box body;

[0009] The touch panel is arranged on the top of the box body;

[0010] The projection device is arranged inside the box body. The projection device is used to project large color blocks in a specific hue angle direction onto the projection screen, and at a preset brightness, small color blocks are given at a certain saturation step in the middle of the large color blocks;

[0011] The host computer is connected to the touch panel. The host computer receives the user operation signals transmitted by the touch panel and outputs test results according to the operation signals;

[0012] The lifting platform is arranged on one side of the box body and is used to drive the person to be tested to rise and fall, so as to adjust the distance between the eyes of the person to be tested and the color blocks on the projection screen.

[0013] Preferably, the projection screen includes: a transparent plate, a speckle projection film and a homogenizing film;

[0014] The homogenizing film is arranged on the lower surface of the transparent plate;

[0015] The speckle projection film is arranged between the homogenizing film and the transparent plate.

[0016] Preferably, the transparent plate is tempered glass.

[0017] Preferably, the touch panel is arranged on the edge side of the transparent plate.

[0018] Preferably, the projection device is a laser projector.

[0019] Preferably, the lifting platform includes: a tabletop, a bottom surface and a telescopic mechanism;

[0020] The telescopic mechanism is vertically arranged on the bottom surface;

[0021] The tabletop is arranged on the top of the telescopic mechanism, and the telescopic mechanism is used to drive the tabletop to rise and fall.

[0022] Preferably, the telescopic mechanism is a hydraulic rod.

[0023] Preferably, the number of hydraulic rods is multiple.

[0024] Preferably, it further includes: a plurality of scissor-type telescopic bars;

[0025] The plurality of scissor-type telescopic bars are arranged along the circumferential direction of the tabletop. Among them, the upper end of the scissor-type telescopic bar is connected to the tabletop, and the lower end of the scissor-type telescopic bar is connected to the bottom surface.

[0026] Preferably, it further includes: a laser and an infrared sensor;

[0027] The light beam emitted by the laser and the infrared rays emitted by the infrared sensor form a two-dimensional plane array for determining the touch position of the user.

[0028] The present utility model provides a color perception ability measurement system. An installation opening for installing a projection screen is provided at the top of a box body, a touch panel is arranged on the top of the box body, and a projection device is arranged inside the box body. The projection device is used to project a large color block in a specific hue angle direction onto the projection screen, and at a preset brightness, small color blocks are given at a certain saturation step in the middle of the large color block. The upper computer is connected to the touch panel, and the upper computer receives the user operation signal transmitted by the touch panel, outputs a test result according to the operation signal, and a lifting platform for driving the person to be measured to lift and adjust the distance between the eyes of the person to be measured and the color block on the projection screen is arranged on one side of the box body. Through the above-disclosed color perception ability measurement system, since the present application can adjust the distance between the user's eyes and the projection screen through the lifting platform, it can simulate the viewing conditions of a small field of view and a large field of view, that is, it can observe at appropriate distances that meet the field of view angles of 2° or 10° respectively. Furthermore, the user makes a selection through the touch panel at different field of view angles, and the upper computer outputs a test result according to the user operation signal transmitted by the touch panel, enabling the user to understand their own color perception ability level. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0030] Figure 1 FIG. 1 is a schematic structural diagram of a color perception ability measurement system provided by an embodiment of the present utility model;

[0031] Figure 2 FIG. 2 is a schematic diagram of the internal structure of the box body provided by an embodiment of the present utility model;

[0032] Figure 3 FIG. 3 is a schematic diagram of the principle of the color perception ability measurement system provided by an embodiment of the present utility model;

[0033] Figure 4 FIG. 4 is a schematic structural diagram of the projection screen provided by an embodiment of the present utility model;

[0034] Figure 5 FIG. 5 is a schematic diagram of the interface of the projection screen during operation provided by an embodiment of the present utility model.

[0035] Wherein, the upper computer 1, the box body 2, the projection device 3, the projection screen 4, the transparent plate 41, the speckle projection film 42, the homogenization film 43, the touch panel 5, the lifting platform 6, the table top 61, the bottom surface 62, the telescopic mechanism 63, the scissor-type telescopic bar 7. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0037] An embodiment of the present utility model provides a color perception ability measurement system. Refer to Figures 1 to 5 , Figure 1 which is a structural schematic diagram of the color perception ability measurement system. The color perception ability measurement system includes: a host computer 1, a box body 2, a projection device 3, a projection screen 4, a touch panel 5, and a lifting platform 6;

[0038] An installation opening for installing the projection screen 4 is provided at the top of the box body 2;

[0039] The touch panel 5 is arranged on the top of the box body 2;

[0040] The projection device 3 is arranged inside the box body 2. The projection device 3 is used to project a large color block in a specific hue angle direction onto the projection screen 4, and at a preset brightness, small color blocks are given at a certain saturation step in the middle of the large color block;

[0041] The host computer 1 is connected to the touch panel 5. The host computer 1 receives the user operation instructions transmitted by the touch panel 5 and outputs test results according to the operation instructions;

[0042] The lifting platform 6 is arranged on one side of the box body 2 and is used to drive the person to be measured to rise and fall, so as to adjust the distance between the eyes of the person to be measured and the color blocks on the projection screen 4.

[0043] It should be noted that the host computer 1 of the present application is a data processing device that can perform data processing according to the operations of users on the touch panel 5 (such as devices with data processing capabilities such as computers, servers, mobile phones, and tablets). That is, after the user operates the touch panel 5, the touch panel 5 will correspondingly send out corresponding operation signals (such as confirmation or end). The host computer 1 receives the operation signal and outputs a corresponding test result according to the operation signal, that is, the color perception ability.

[0044] It should also be noted that by setting the lifting platform 6, the user can stand on the lifting platform 6 to measure the color perception ability, and the distance between the user's eyes and the projection screen 4 can be changed by lifting, so as to simulate the viewing adjustment of small and large fields of view, that is, to meet the appropriate distances for observing at a field of view angle of 2° or 10° respectively.

[0045] It should be noted that in the LCH color space (Lab, Chroma, Hue, i.e., lightness, chroma, and hue), by measuring the number of color perceptions at each hue angle, the gamut area of the user in the horseshoe gamut can be obtained. That is, by covering the brightness levels from 1 to 100, the three-dimensional gamut volume of the user in the color space can be obtained. Moreover, the larger the gamut, the more colors the user can see. For a certain color, the larger the area of this color covered by the user's gamut, the better the user's perception ability of this color. Therefore, the projection device 3 projects a large color patch in a specific hue angle direction onto the projection screen 4, and at a certain brightness level, small color patches are given in the middle of the large color patch at a certain saturation step. The saturation of the middle small color patch is different from that of other color patches. Then, the user is allowed to observe at an appropriate distance that satisfies a 2° or 10° field of view angle and make selections by touching the touchpad 5. The host computer 1 can output a scoring result, such as grades like excellent, good, medium, or poor, or a numerical value from 1 to 100, through a score system established in advance based on large-sample test data according to the user's touch selections on the touchpad 5.

[0046] Specifically, the saturation step set in the above method is 0.1 to balance the measurement accuracy and measurement speed. If higher-precision measurement is to be achieved, the step can be reduced and the number of measured hue angles can be increased; if faster measurement is to be achieved, the step can be increased and the number of measured hue angles can be reduced.

[0047] In the embodiment of the present utility model, an installation opening for installing the projection screen 4 is provided at the top of the box body 2, the touchpad 5 is arranged on the top of the box body 2, the projection device 3 is arranged inside the box body 2. The projection device 3 is used to project a large color patch in a specific hue angle direction onto the projection screen 4, and at a preset brightness, small color patches are given in the middle of the large color patch at a certain saturation step. The host computer 1 is connected to the touchpad 5. The host computer 1 receives the user operation signal transmitted by the touchpad 5 and outputs a test result according to the operation signal, and a lifting platform 6 for driving the person to be measured to lift to adjust the distance between the eyes of the person to be measured and the color patches on the projection screen 4 is arranged on one side of the box body 2. Through the above-disclosed color perception ability measurement system, since the present application can adjust the distance between the user's eyes and the projection screen 4 through the lifting platform 6, it can thus simulate the viewing conditions of a small field of view and a large field of view, that is, it can observe at an appropriate distance that satisfies a 2° or 10° field of view angle respectively. Then, the user makes selections through the touchpad 5 at different field of view angles, and the host computer 1 outputs a test result through the user operation signal transmitted by the touchpad 5, enabling the user to understand their own color perception ability level.

[0048] Specifically, the projection screen 4 includes: a transparent plate 41, a speckle projection film 42, and a homogenizing film 43;

[0049] The homogenizing film 43 is arranged on the lower surface of the transparent plate 41.

[0050] The speckle projection film 42 is disposed between the homogenizing film 43 and the transparent plate 41.

[0051] It should be noted that the homogenizing film 43 is disposed on the lower surface of the transparent plate 41, and the speckle projection film 42 is disposed between the homogenizing film 43 and the transparent plate 41. The speckle projection film 42 and the homogenizing film 43 can reduce the speckle phenomenon caused by the projection device 3, improve the display image quality, and reduce the interference to color perception caused by other factors.

[0052] Specifically, the transparent plate 41 is tempered glass.

[0053] It should be noted that setting the transparent plate 41 as tempered glass can effectively improve the stiffness and prevent potential safety hazards caused by the breakage of the transparent plate 41.

[0054] It should also be noted that the transparent plate 41 can be tempered glass or other light-transmitting panels (such as acrylic, etc.), and those skilled in the art can choose according to requirements.

[0055] Furthermore, the touch panel 5 is disposed on the edge side of the transparent plate 41.

[0056] It should be noted that setting the touch panel 5 on the edge side of the transparent plate 41 not only facilitates user operation but also avoids the touch panel 5 affecting the user's observation of specific color patches on the projection screen 4.

[0057] Specifically, the projection device 3 is a laser projector.

[0058] It should be noted that the projection device 3 can be a laser projector or other types of devices that can project large color patches in a specific hue angle direction on the projection screen 4 and can give small color patches at a certain saturation step in the middle of the large color patches at a certain brightness level.

[0059] Specifically, the lifting platform 6 includes: a tabletop 61, a bottom surface 62, and a telescopic mechanism 63;

[0060] The telescopic mechanism 63 is vertically disposed on the bottom surface 62;

[0061] The tabletop 61 is disposed on the top of the telescopic mechanism 63, and the telescopic mechanism 63 is used to drive the tabletop 61 to lift.

[0062] It should be noted that the telescopic mechanism 63 is vertically disposed on the bottom surface 62, the tabletop 61 is disposed on the top of the telescopic mechanism 63, and the telescopic mechanism 63 is used to drive the tabletop 61 to lift. Thus, when a user stands on the tabletop 61, the distance between the user's eyes and the projection screen 4 can be changed by the extension or retraction of the telescopic mechanism 63.

[0063] Specifically, the telescopic mechanism 63 is a hydraulic rod.

[0064] It should be noted that the telescopic mechanism 63 can be a hydraulic rod, a cylinder, or an electric push rod, and those skilled in the art can select according to requirements.

[0065] Specifically, the number of hydraulic rods is multiple.

[0066] It should be noted that by setting multiple hydraulic rods, the stability and support during the lifting of the tabletop 61 can be effectively ensured, thereby improving the user experience.

[0067] Furthermore, the color perception ability measurement system further includes: a plurality of scissor-type telescopic fences 7;

[0068] The plurality of scissor-type telescopic fences 7 are arranged circumferentially along the tabletop 61. Among them, the upper end of the scissor-type telescopic fence 7 is connected to the tabletop 61, and the lower end of the scissor-type telescopic fence 7 is connected to the bottom surface 62.

[0069] It should be noted that by setting a plurality of scissor-type telescopic fences 7, arranging the plurality of scissor-type telescopic fences 7 circumferentially along the tabletop 61, connecting the upper end of the scissor-type telescopic fence 7 to the tabletop 61, and connecting the lower end of the scissor-type telescopic fence 7 to the bottom surface 62, during the lifting process of the tabletop 61, the scissor-type telescopic fence 7 can expand and contract as the tabletop 61 rises and falls, effectively preventing foreign objects from falling between the tabletop 61 and the bottom surface 62 and affecting the descent of the tabletop 61.

[0070] Furthermore, the color perception ability measurement system further includes: a laser and an infrared sensor;

[0071] The light beam emitted by the laser and the infrared rays emitted by the infrared sensor form a two-dimensional plane array for determining the touch position of the user.

[0072] It should be noted that by setting a laser and an infrared sensor, and making the light beam emitted by the laser and the infrared rays emitted by the infrared sensor form a two-dimensional plane array for determining the touch position of the user, when the user touches the touchpad 5, the position touched by the user can be determined through the two-dimensional plane array formed by the laser and the infrared sensor, and the user touch position information can be sent to the host computer 1 for data processing.

[0073] The lifting table 6 of the present application can be adjusted by buttons according to the height of the measured user, thereby ensuring the distance between the eyes and the projection screen 4, keeping the viewing field (angle) of the eyes on the image to be distinguished within a constant range, and meeting the requirements of a small viewing field (2° to 4°) and a large viewing field (4° to 10°).

[0074] The adjustment range of the lifting table 6 of the present application is 0 to 1 meter, and the adjustment accuracy is 1 cm.

[0075] When the distance between the eyes and the projection screen 4 cannot be adjusted by the lift table 6 in this application, the size of the projected color patches can be changed by software to adapt to the required viewing angle, that is, the change between a large viewing field and a small viewing field.

[0076] Based on the color perception ability measurement system provided in the above embodiments, combined with Figures 1 to 5 , the embodiments of the present utility model also provide a working process of the color perception ability measurement system.

[0077] Step 1: Set the brightness of the projection device 3 to half of the highest white field brightness.

[0078] Step 2: Divide the colors into 12 hue angles at 30-degree intervals, corresponding to 0°, 30°, 60°, and 330°. Initially starting from the 0-degree angle, complete the test for each hue angle in sequence.

[0079] Step 3: Generate a nesting of large color patches and small color patches. Among them, the initial saturation of both the large color patches and the small color patches is set to 0, and at this time, the difference between the large color patches and the small color patches cannot be distinguished.

[0080] Step 4: Click the button on the right side of the slider. The saturation of the large color patch remains unchanged, and the saturation of the small color patch increases by 1 step unit (such as 0.1). Judge the colors of the large color patch and the small color patch. If the colors of the large color patch and the small color patch can be distinguished, execute Step 5; if the colors of the large color patch and the small color patch cannot be distinguished, execute Step 7.

[0081] Step 5: Click OK.

[0082] Step 6: Click the button on the right side of the slider. The saturation of the small color patch remains unchanged, and the saturation of the large color patch increases by 1 step unit. At this time, the saturations of the large color patch and the small color patch are the same and cannot be distinguished. At this time, judge whether the saturation value is less than 100. If the saturation value is less than 100, return to Step 3; if the saturation of the color patch is equal to 100, the test ends, and the test for the next hue angle starts, that is, return to Step 1.

[0083] Step 7: Click the button on the right side of the slider. Judge whether the saturation of the small color patch is less than 100. If the saturation of the small color patch is less than 100, return to execute Step 3; if the saturation of the color patch is equal to 100, the test ends, and the test for the next hue angle starts, that is, return to Step 1.

[0084] It should be noted that according to the needs of the test, the hue angle is divided into M sub-directions. When completing the test for each hue angle direction, output the number of images judged during the test, denoted as N0, N1, N2…N M , to represent the color discrimination ability in different hue angle directions, and through N0, N1, N2…N M Adding them up can obtain the overall color discrimination ability value.

[0085] Alternatively, in the LCH color space, an approximate polar plot can be drawn based on the measurement results of 12 hue angles to obtain the gamut area of a certain brightness screen, and then by testing each brightness plane with L = 0 - 100, the resolvable gamut volume can be obtained by superposition.

[0086] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A color perception ability measurement system, characterized in that: include: Host computer, cabinet, projection equipment, projection screen, touch panel and lifting platform; The top of the box is provided with an installation opening for installing the projection screen; The touch panel is arranged on the top of the box; The projection device is arranged in the box, and is used to project a large color block in a specific hue angle direction onto the projection screen, and when the brightness is preset, a small color block is provided in the middle of the large color block according to a certain saturation step length; The host computer is connected to the touch panel, and the host computer receives a user operation signal transmitted by the touch panel, and outputs a test result according to the operation signal; The lifting platform is arranged at one side of the box body, and is used to drive the subject to be measured to move up and down, so as to adjust the distance between the eyes of the subject and the color blocks on the projection screen.

2. The color perception ability measurement system according to claim 1, characterized in that: The projection screen comprises: a transparent plate, a speckle projection film and a homogenizing film; The homogenizing film is arranged on the lower surface of the transparent plate; The speckle projection film is arranged between the homogenizing film and the transparent plate.

3. The color perception ability measurement system according to claim 2, characterized in that: The transparent plate is tempered glass.

4. The color perception ability measurement system according to claim 2, characterized in that: The touch panel is arranged on the edge side of the transparent plate.

5. The color perception ability measurement system according to claim 1, characterized in that: The projection device is a laser projector.

6. The color perception ability measurement system according to claim 1, characterized in that: The lifting platform comprises: a table top, a bottom surface and a telescopic mechanism; The telescopic mechanism is vertically arranged on the bottom surface; The table top is arranged on the top of the telescopic mechanism, and the telescopic mechanism is used to drive the table top to rise and fall.

7. The color perception ability measurement system according to claim 6, characterized in that: The telescopic mechanism is a hydraulic rod.

8. The color perception ability measurement system according to claim 7, characterized in that: The number of the hydraulic rods is multiple.

9. The color perception ability measurement system according to claim 6, characterized in that: Also includes: Multiple scissor-style telescopic bars; A plurality of the scissor-type telescopic bars are arranged along the circumference of the table top, wherein the upper ends of the scissor-type telescopic bars are connected to the table top, and the lower ends of the scissor-type telescopic bars are connected to the bottom surface.

10. The color perception ability measurement system according to claim 1, characterized in that: Also includes: Lasers and infrared sensors; The light beam emitted by the laser and the infrared rays emitted by the infrared sensor form a two-dimensional plane array for determining the touch position of the user.

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