CN216117383U - Material carrying plate for image acquisition and image acquisition device - Google Patents
Material carrying plate for image acquisition and image acquisition device Download PDFInfo
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- CN216117383U CN216117383U CN202122187428.XU CN202122187428U CN216117383U CN 216117383 U CN216117383 U CN 216117383U CN 202122187428 U CN202122187428 U CN 202122187428U CN 216117383 U CN216117383 U CN 216117383U
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Abstract
The utility model provides a material carrying plate for image acquisition. The utility model provides an image acquisition device, which comprises: the material loading plate for image acquisition and the image acquisition mechanism for acquiring the image of the sample on the material loading plate are arranged. The utility model can effectively reduce light interference, so that the acquired image has no other light and shadow interference and the image light is uniform.
Description
Technical Field
The utility model relates to the technical field of grain detection equipment, in particular to a material carrying plate for image acquisition and an image acquisition device.
Background
Before the grains are put in storage, the grains are graded according to a grading determination method, wherein the grading of the grains is mainly graded according to the proportion of imperfect grains, the imperfect types comprise worm-eaten grains, scab grains, damaged grains, germinated grains, mildewed grains and the like, and taking wheat as an example, the grains are sampled from the wheat to be put in storage and subjected to image acquisition, so that the defects of the samples are judged through analyzing the images, and the grains are graded according to the proportion of the wheat with different defects in the samples. Therefore, the acquired image definition is directly related to the analysis result in the later period. Therefore, the mode of sample front-back double-sided collection is adopted when collecting sample images, so that the material carrying plate for placing samples is made of transparent materials, and light sources are arranged above and below the material carrying plate respectively. When the light source is turned on, light beams emitted by the light source can penetrate through the transparent material carrying plate to form light source imaging on the other side of the transparent material carrying plate, and when the image acquisition unit acquires an image, the field of view of the image acquisition unit is increased along with the increase of the distance, so that the light source imaging falls into the field of view of image acquisition (as shown in figure 1), and further the shot image has light and shadow interference to influence the image definition.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the background art, the utility model provides a material carrying plate for image acquisition and an image acquisition device.
The utility model provides a material carrying plate for image acquisition.
Preferably, the light-shielding region is black in color.
The utility model provides an image acquisition device, which comprises: as above-mentioned image acquisition is with carrying flitch and image acquisition mechanism, wherein:
the image acquisition mechanism comprises a front image acquisition unit and a back image acquisition unit, wherein the front image acquisition unit is positioned above the transparent area, and the back image acquisition unit is positioned below the transparent area.
Preferably, the front light source is arranged on the outer side above the transparent area.
Preferably, the irradiation region of the front light source is located inside the light shielding region and covers the transparent region.
Preferably, the front light source comprises a first light-gathering cover in a frame shape and first lamp beads uniformly distributed on the inner wall of the first light-gathering cover in the circumferential direction, the first light-gathering cover is positioned between the front image acquisition unit and the material carrying plate, and the circumferential wall of the first light-gathering cover is positioned on the outer side of the transparent area; the peripheral wall of the first condenser cover is positioned at the inner side of the outer edge of the shading area.
Preferably, the backlight module further comprises a back light source, and the back light source is positioned at the outer side below the transparent area.
Preferably, the irradiation area of the back light source is located inside the light shielding region and covers the transparent region.
Preferably, the back light source comprises a second light condensation cover in a frame shape and second lamp beads uniformly distributed on the inner wall of the second light condensation cover in the circumferential direction, the second light condensation cover is positioned between the back image acquisition unit and the material loading plate, and the circumference of the second light condensation cover is positioned on the outer side of the transparent area; the peripheral wall of the second condensation cover is positioned at the inner side of the outer edge of the light shielding area.
In the utility model, the material carrying plate is provided with the transparent area and the shading area, and the shading area is positioned at the periphery of the transparent area, so that in work, the transparent area is used for placing a sample, and the shading area is used for shading the light source, so that the light source cannot penetrate through, and further, the light source imaging cannot fall into the image acquisition field, thereby reducing light interference, enabling the acquired image to have no other light and shadow interference, and enabling the image light to be uniform.
Drawings
Fig. 1 is a schematic view of a light beam passing through a transparent carrier plate to form an image on the other side thereof.
Fig. 2 is a schematic structural diagram of a material loading plate for image acquisition according to the present invention.
Fig. 3 is a schematic view of the working principle of the material loading plate for image acquisition according to the present invention.
Fig. 4 is an image capturing device according to the present invention.
The reference numerals in fig. 1-4 are illustrated as follows:
01-light source imaging; 02-field of view area for image acquisition; 1-a transparent region; 2-shading area; 3-a front image acquisition unit; 4-a back image acquisition unit; 5-a positive surface light source; 6-back light source.
Detailed Description
Referring to fig. 2, the material loading plate for image acquisition according to the present invention includes a transparent region 1 and a light shielding region 2 circumferentially and annularly disposed on the periphery of the transparent region 1.
Referring to fig. 3, in operation, the transparent area 1 is used for placing a sample, and the shading area 2 is used for shading the light source, so that the light source cannot pass through, and further, the light source cannot fall into the field of view of image acquisition, thereby reducing light interference, enabling the acquired image to have no other light and shadow interference, and enabling the image light to be uniform.
In addition, in this embodiment, the color of the light-shielding region 2 is a dark color with low transmittance, such as: black, grey, dark grey, etc.
Referring to fig. 4, an image capturing apparatus according to the present invention includes: as above-mentioned image acquisition is with carrying flitch and image acquisition mechanism, wherein:
the image acquisition mechanism comprises a front image acquisition unit 3 and a back image acquisition unit 4, wherein the front image acquisition unit 3 is positioned above the transparent area 1 so as to acquire a front image of the sample from the upper part of the sample. The back image collecting unit 4 is located below the transparent region 1 to take a back image of the sample from below the sample.
The size of the transparent area 1 in specific production depends on the size of the visual field of the image acquisition mechanism, so as to ensure that the transparent area 1 is matched with the size of the visual field of the image acquisition mechanism.
In addition, in this embodiment, the front light source 5 is further included, the front light source 5 is located on the outer side above the transparent area 1, the irradiation area of the front light source 5 is located on the inner side of the shading area 2 and covers the transparent area 1, light beams are prevented from being projected to the lower side of the material carrying plate from the periphery of the material carrying plate, meanwhile, the light beams are projected to the transparent area 1 as much as possible, and effective utilization of light is guaranteed.
Specifically, the method comprises the following steps: the front surface light source 5 comprises a first light-gathering cover in a frame shape and first lamp beads circumferentially and uniformly distributed on the inner wall of the first light-gathering cover, the first light-gathering cover is positioned between the front image acquisition unit 3 and the material carrying plate, and the peripheral wall of the first light-gathering cover is positioned on the outer side of the transparent area 1. When the front image capturing unit 3 performs image capturing operation, the front light source 5 emits light beams to the transparent region 1 from the periphery above the transparent region 1 to further enhance the image light uniformity.
The same principle is that: in this embodiment, the backlight module further includes a back light source 6, the back light source 6 is located at the outer side below the transparent region 1, and the irradiation area of the back light source 6 is located at the inner side of the light shielding region 2 and covers the transparent region 1. The light beam is prevented from being thrown to the upper part of the material carrying plate from the periphery of the material carrying plate, and the light interference of the upper part is avoided. Meanwhile, the light beams are projected to the transparent area 1 as much as possible, and the effective utilization of the light is guaranteed.
Specifically, the method comprises the following steps: the back light source 6 comprises a second light condensation cover in a frame shape and second lamp beads uniformly distributed on the inner wall of the second light condensation cover in the circumferential direction, the second light condensation cover is located between the back image acquisition unit 4 and the material loading plate, and the circumference of the second light condensation cover is located on the outer side of the transparent area 1. When the back image pickup unit 4 performs image pickup operation, the back light source 6 emits light beams from the four-circumference transparent region 1 below the transparent region 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. An image acquisition apparatus, comprising: carry flitch and image acquisition mechanism, wherein:
the material carrying plate comprises a transparent area (1) and a shading area (2) circumferentially and annularly distributed on the periphery of the transparent area (1); the image acquisition mechanism comprises a front image acquisition unit (3) and a back image acquisition unit (4), wherein the front image acquisition unit (3) is positioned above the transparent area (1), and the back image acquisition unit (4) is positioned below the transparent area (1).
2. The image-capturing device according to claim 1, characterized in that the shading area (2) is black in color.
3. The image-capturing device according to claim 1, characterized in that it further comprises a front light source (5), the front light source (5) being located outside above the transparent area (1).
4. An image capturing device as claimed in claim 3, characterized in that the illuminated area of the front light source (5) is located inside the light-shielding region (2) and covers the transparent region (1).
5. The image acquisition device as claimed in claim 4, wherein the front light source (5) comprises a first light-gathering cover in a frame shape and first lamp beads uniformly distributed on the inner wall of the first light-gathering cover in the circumferential direction, the first light-gathering cover is positioned between the front image acquisition unit (3) and the material carrying plate, and the circumferential wall of the first light-gathering cover is positioned outside the transparent area; the peripheral wall of the first condenser cover is positioned at the inner side of the outer edge of the shading area (2).
6. The image acquisition device according to claim 1, further comprising a back light source (6), the back light source (6) being located outside below the transparent region (1).
7. The image acquisition device according to claim 6, characterized in that the irradiation area of the back light source (6) is located inside the light-shielding region (2) and covers the transparent region (1).
8. The image acquisition device according to claim 7, wherein the back light source (6) comprises a second light condensation cover in a frame shape and second light beads uniformly distributed on the inner wall of the second light condensation cover in the circumferential direction, the second light condensation cover is positioned between the back image acquisition unit (4) and the material carrying plate, and the circumference of the second light condensation cover is positioned outside the transparent area (1); the peripheral wall of the second light condensation cover is positioned at the inner side of the outer edge of the light shading area (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122187428.XU CN216117383U (en) | 2021-09-09 | 2021-09-09 | Material carrying plate for image acquisition and image acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122187428.XU CN216117383U (en) | 2021-09-09 | 2021-09-09 | Material carrying plate for image acquisition and image acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216117383U true CN216117383U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122187428.XU Active CN216117383U (en) | 2021-09-09 | 2021-09-09 | Material carrying plate for image acquisition and image acquisition device |
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| Country | Link |
|---|---|
| CN (1) | CN216117383U (en) |
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2021
- 2021-09-09 CN CN202122187428.XU patent/CN216117383U/en active Active
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