Large-format image scanning equipment

Abstract

The utility model relates to the technical field of image scanning equipment, in particular to large-breadth image scanning equipment, which comprises a scanning platform and a scanning assembly movably arranged on the scanning platform, the scanning platform comprises a rack, a feeding assembly and a moving assembly, the feeding assembly and the moving assembly are arranged on the rack, and the scanning assembly is connected with the moving assembly. The scanning assembly scans once at a constant speed along the moving assembly, so that the image acquisition point information of the scanned image can be acquired; according to the utility model, the scanning platform not only can place and move a large-breadth image at a constant speed through the feeding assembly, but also can drive the scanning assembly to horizontally move back and forth at a constant speed through the moving assembly, and the scanning platform and the moving assembly are matched with each other, so that the size of the scanning platform is reduced, and meanwhile, the scanning platform can adapt to information acquisition work of large-breadth images with different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of image scanning equipment, in particular to a large-format image scanning equipment. Background Art

[0002] Currently, an image scanning device is a device for scanning an original image (such as a painting or a picture) and converting the original image into digital data.

[0003] With the development of information technology, small-format (below A0 size) paper documents have been digitized and electronically stored and processed by scanners and other equipment. However, for large-format (above A0 size) paper documents in some special demand areas, such as large-format image scanning and acquisition equipment for large-format paper documents such as oil paintings, there are the following problems: 1. Because oil paintings are made of ink and there are uneven ink dots on their surface, the scanning components in the existing large-format image scanning and acquisition equipment need to scan back and forth multiple times at different angles to fully record all the concave and convex features of the scanned area of ​​the large-format oil painting and form a 3D drawing. This greatly reduces the efficiency of information scanning and acquisition in actual use. 2. The scanning platform used to place the scanned image on the existing large-format image scanning and acquisition equipment is an ordinary flat piece. In actual use, when scanning a large-format image, if you want to put it down completely, you need to customize a scanning platform of the same size. At the same time, after the scanning is completed, you need to manually recover the scanned image and replace it with a new scanned oil painting, which is not only time-consuming and labor-intensive, but also reduces the scanning efficiency and increases the cost of use.

[0004] The applicant hereby proposes a large-format image scanning device. Utility Model Content

[0005] In order to solve the deficiencies in the prior art, the utility model provides a large-format image scanning device.

[0006] The technical solution of the utility model is:

[0007] The utility model provides a large-format image scanning device, comprising a scanning platform and a scanning component movably arranged on the scanning platform, the scanning platform comprising a frame and a feeding component and a moving component arranged on the frame, the scanning component is connected to the moving component, and the scanning component can complete the acquisition of image acquisition point information of the scanned image by scanning once along the moving component at a uniform speed.

[0008] Furthermore, the scanning component includes a frame, a collection device, a light source, a reflector and a mask mounted on the outer surface of the frame; the two sides of the bottom end of the frame are movably connected to the frame through a movable component, the collection device is fixed on the top surface of the frame, there are at least eight light sources and they are fixed on the four inner side surfaces of the frame in sequence from bottom to top, and a reflector is fixed at the lower end of each of the four inner side surfaces of the frame.

[0009] Furthermore, the light sources on opposite sides of the frame are symmetrically arranged, and the light sources between adjacent sides of the frame are staggeredly distributed.

[0010] Furthermore, the light source includes a lamp and a light guide plate, the light guide plate is fixedly arranged on the inner side of the frame by a bracket, and the lamp is arranged above the light guide plate.

[0011] Furthermore, the feeding assembly is transversely fixed on the frame and includes a driving roller, a driven roller and a conveyor belt; a mounting cavity is provided in the middle of the frame, the driving roller and the driven roller are respectively arranged on both sides of the mounting cavity, the driving roller is driven by a motor arranged in the frame, and the conveyor belt is sleeved on the driving roller and the driven roller.

[0012] Furthermore, the feeding assembly also includes an adsorption plate and an exhaust device. The adsorption plate is arranged in the installation cavity between the active roller and the driven roller and cooperates with the bottom surface above the conveyor belt. The adsorption plate is provided with a plurality of adsorption through holes connected to the exhaust device arranged in the frame. The conveyor belt is made of breathable material.

[0013] Furthermore, the moving assembly includes a fixed frame and an electric guide rail fixedly mounted above the frame. The electric guide rails are fixedly mounted on the inner side surfaces opposite to each other in the length direction of the fixed frame. The electric guide rails are respectively connected to both sides of the bottom end of the frame.

[0014] Furthermore, both sides of the scanning platform also include a feeding conveyor belt for assisting feeding and a winding roller for winding up the scanned large-format image.

[0015] The beneficial effects achieved by the utility model are:

[0016] The scanning platform in the utility model can not only place and uniformly move large-format images through the feeding component, but also drive the scanning component to move back and forth horizontally at a uniform speed through the moving component. The two cooperate with each other to reduce the size of the scanning platform while adapting to large-format image information collection work of various sizes.

[0017] In addition, the scanning component can realize the scanning and collection of color images and high and low shadow image information in different directions of the image acquisition point of the scanned image in front, behind, left and right by cooperating with the corresponding reflectors through eight light sources tilted around the frame. The scanning component only needs to scan once at a uniform speed along the moving component to complete the collection of color images and high and low shadow image information of the image acquisition point, thereby improving the efficiency and accuracy of scanning and collecting information. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 yes Figure 1 A magnified image

[0020] Figure 3 It is a schematic diagram of the internal structure of the scanning component of the utility model.

[0021] Figure 4 It is a partial schematic diagram of the scanning platform of the utility model.

[0022] Figure 5 This utility model Figure 4 Enlarged view of point B.

[0023] Figure 6 It is a schematic diagram of the light source structure of the utility model.

[0024] Figure 7 It is a schematic diagram of the light source opening sequence of the scanning component of the utility model. DETAILED DESCRIPTION

[0025] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0026] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left",

[0027] The directions or positional relationships indicated by "right", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] like Figure 1-7 As shown, a large-format image scanning device of the utility model mainly includes a scanning platform 1 and a scanning component 2 movably arranged on the scanning platform 1, the scanning platform 1 includes a frame 11 and a feeding component 12 and a moving component 13 arranged on the frame 11, the scanning component 2 is connected to the moving component 13, and the scanning component 2 can complete the image acquisition point information acquisition of the scanned image by scanning once along the moving component 13 at a uniform speed; the scanning platform can not only place and uniformly move the large-format image through the feeding component, but also drive the scanning component to move back and forth horizontally at a uniform speed through the moving component, and the two cooperate with each other to reduce the size of the scanning platform while adapting to various large-format image information acquisition tasks of different sizes.

[0031] The scanning assembly 2 comprises a frame 21, a collection device 22, a light source 23, a reflector 24 and a mask 25 sleeved on the outer surface of the frame 21; the two sides of the bottom end of the frame 21 are movably connected to the frame 11 through the moving assembly 13, the collection device 22 is fixed on the top surface of the frame 21, there are at least eight light sources 23 and they are respectively fixed on the four inner side surfaces of the frame 21 in an inclined manner from bottom to top in sequence, the light sources 23 on the opposite sides of the frame 21 are symmetrically arranged, the light sources 23 between the adjacent sides of the frame 21 are staggered and distributed, and a reflector 24 is fixed at the lower end of each of the four inner side surfaces of the frame 21; during the scanning process, the eight light sources can be turned on individually or simultaneously through the control system, and the eight light sources inclined around the frame cooperate with the corresponding reflectors to realize the scanning and collection of color images and high and low shadow image information in different directions of the image collection point of the scanned image, such that the scanning assembly only needs to scan once along the moving assembly at a uniform speed to complete the collection of color images and high and low shadow image information of the image collection point, thereby improving the efficiency and accuracy of scanning and collecting information.

[0032] The light source 23 includes a lamp 231 and a light guide plate 232. The light guide plate 232 is fixedly arranged on the inner side of the frame 21 by a bracket, and the lamp 231 is arranged above the light guide plate 232 and its irradiation end is oriented in the same direction as the light guide plate 232. The light is more concentratedly reflected onto the image surface through the reflector, thereby improving the scanning and acquisition accuracy.

[0033] The scanning component 2 also includes a data storage module for storing the color image and high and low shadow image information obtained by scanning.

[0034] The feeding assembly 12 is transversely fixed on the frame 11 and includes an active roller 121, a driven roller 122 and a conveyor belt 123; a mounting cavity is provided in the middle of the frame 11, and the active roller 121 and the driven roller 122 are respectively arranged on both sides of the mounting cavity, the active roller 121 is driven by a motor arranged in the frame 11, and the conveyor belt 123 is sleeved on the active roller 121 and the driven roller 122; the large-format image can be moved along the rotation direction of the conveyor belt, the size of the scanning platform can be reduced, and it can also adapt to the large-format image information collection work of various sizes.

[0035] The feeding assembly 12 also includes an adsorption plate 124 and an exhaust device. The adsorption plate 124 is arranged in the installation cavity between the active roller 121 and the driven roller 122 and cooperates with the bottom surface above the conveyor belt 123. The adsorption plate 124 is provided with a plurality of adsorption holes in an equidistant rectangular distribution. The adsorption plate 124 is connected to the exhaust device arranged in the frame 11. The conveyor belt 123 is made of a breathable material, preferably a polyester fiber woven conveyor mesh belt. When the exhaust device is working, the adsorption holes on the adsorption plate suck the air above the conveyor belt into the adsorption plate and form a negative pressure area above the conveyor belt. The large-format image can be adsorbed by the conveyor belt so that it will not suffer serious positional displacement during movement.

[0036] The moving assembly 13 includes a fixed frame 131 and an electric guide rail 132 fixedly mounted above the frame 11. The electric guide rails 132 are fixedly mounted on the inner side surfaces opposite to each other in the length direction of the fixed frame 131. The electric guide rails 132 are respectively connected to both sides of the bottom end of the frame 21, thereby realizing the function of horizontal movement of the scanning assembly.

[0037] The scanning platform 1 also includes a feeding conveyor belt for auxiliary feeding and a winding roller for winding up the scanned large-format image on both sides (not shown in the drawings of the specification).

[0038] The feeding assembly 12 also includes two sensors for identifying and controlling the conveyor belt to enter or exit a working state. The two sensors are respectively fixed on the frame 11 and located directly above the two ends of the conveyor belt.

[0039] The air extraction device, the motor, the electric guide rail 132, the collection device 22, and the light source 23 are all electrically connected to the control system located in the frame 11;

[0040] An image scanning method, applied to a large-format image scanning device in embodiment 1, the method comprising:

[0041] S1: The acquisition end of the acquisition device is uniformly moved and positioned to be just above the image acquisition point of the scanned image;

[0042] S2: All light sources in the scanning component are turned on through the control system and refracted to the top of the image acquisition point through the corresponding reflectors to form a light field with uniform light. At this time, the acquisition device will acquire a color image of the image acquisition point.

[0043] S3: Only one of all the light sources is turned on in sequence from bottom to top through the control system, and the turned-on light sources refract the light to the top of the image acquisition point through the corresponding reflector, so that the acquisition device collects 8 high and low shadow image information in the four directions of the image acquisition point: front, back, left, and right;

[0044] Specifically, only the following light sources are turned on in order from bottom to top;

[0045] Only light source 1 is turned on and reflected by reflector 3 to collect the high shadow image on the left side of the image acquisition point;

[0046] Only light source 2 is turned on and reflected by reflector 4 to collect the high shadow image at the rear side of the image collection point;

[0047] Only light source 3 is turned on and reflected by reflector 1 to collect the high shadow image on the right side of the image acquisition point;

[0048] Only light source 4 is turned on and reflected by reflector 2 to collect the high shadow image on the front side of the image collection point;

[0049] Only light source 5 is turned on and reflected by reflector 3 to collect the low shadow image on the left side of the image acquisition point;

[0050] Only the light source 6 is turned on and reflected by the reflector 4 to collect the low shadow image at the rear side of the image collection point;

[0051] Only light source 7 is turned on and reflected by reflector 1 to collect the low shadow image on the right side of the image acquisition point;

[0052] Only the light source 8 is turned on and reflected by the reflector 2 to collect the front low shadow image of the image collection point.

[0053] S4: After completing the information collection at the image collection point, move to the next image collection point and repeat the above steps until the information collection at all positions of the scanned image is completed;

[0054] S5: After the information collection of all positions of the scanned image is completed, one color image and eight high and low shadow images of all positions of the scanned image are obtained. Finally, the one color image and the eight high and low shadow images of all positions of the scanned image are respectively spliced ​​into one complete color image and eight complete high and low shadow images through image editing and processing software such as Adobe Photoshop;

[0055] S6: One complete color image and eight complete high and low shadow images obtained by splicing image editing and processing software such as Adobe Photoshop are transformed into a three-dimensional model through "photometric stereo calculation". The color image will be used as the surface color map of the three-dimensional model.

[0056] The above-described implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A large-format image scanning device, comprising a scanning platform (1) and a scanning component (2) movably arranged on the scanning platform (1), characterized in that: The scanning platform (1) comprises a frame (11), a feeding assembly (12) and a moving assembly (13) arranged on the frame (11); the scanning assembly (2) is connected to the moving assembly (13); the scanning assembly (2) can complete the acquisition of image acquisition point information of the scanned image by scanning once along the moving assembly (13) at a uniform speed.

2. A large-format image scanning device according to claim 1, characterized in that: The scanning assembly (2) comprises a frame (21), a collection device (22), a light source (23), a reflector (24) and a mask (25) sleeved on the outer surface of the frame (21); the two sides of the bottom end of the frame (21) are movably connected to the frame (11) through a movable assembly (13); the collection device (22) is fixed on the top surface of the frame (21); there are at least eight light sources (23) which are respectively and sequentially fixed on four inner side surfaces of the frame (21) in an inclined manner from bottom to top; and a reflector (24) is fixed at the lower end of each of the four inner side surfaces of the frame (21).

3. A large-format image scanning device according to claim 2, characterized in that: The light sources (23) on opposite sides of the frame (21) are symmetrically arranged, and the light sources (23) between adjacent sides of the frame (21) are staggeredly distributed.

4. A large-format image scanning device according to claim 3, characterized in that: The light source (23) comprises a lamp (231) and a light guide plate (232); the light guide plate (232) is fixedly arranged on the inner side of the frame (21) in an inclined manner through a bracket; and the lamp (231) is arranged above the light guide plate (232).

5. A large-format image scanning device according to claim 4, characterized in that: The feeding assembly (12) is transversely fixed on the frame (11) and comprises a driving roller (121), a driven roller (122) and a conveyor belt (123); a mounting cavity is provided in the middle of the frame (11); the driving roller (121) and the driven roller (122) are respectively arranged on both sides of the mounting cavity; the driving roller (121) is driven by a motor arranged in the frame (11); and the conveyor belt (123) is sleeved on the driving roller (121) and the driven roller (122).

6. A large-format image scanning device according to claim 5, characterized in that: The feeding assembly (12) further comprises an adsorption plate (124) and an exhaust device. The adsorption plate (124) is arranged in the installation cavity between the active roller (121) and the driven roller (122) and cooperates with the bottom surface above the conveyor belt (123). The adsorption plate (124) is provided with a plurality of adsorption through holes connected to the exhaust device arranged in the frame (11). The conveyor belt (123) is made of a breathable material.

7. A large-format image scanning device according to claim 6, characterized in that: The moving assembly (13) comprises a fixed frame (131) and an electric guide rail (132) fixedly arranged directly above the frame (11); the electric guide rails (132) are fixedly arranged on the inner side surfaces opposite to each other in the length direction of the fixed frame (131); and the electric guide rails (132) are respectively connected to two sides of the bottom end of the frame (21).

8. A large-format image scanning device according to claim 7, characterized in that: The scanning platform (1) also includes a feeding conveyor belt for assisting feeding and a winding roller for winding up the scanned large-format image on both sides.

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