Image acquisition device

Abstract

This invention provides an image acquisition device, including a rotating stage with a sample-bearing area, and a first camera assembly, a second camera assembly, and a third camera assembly for acquiring images of the bottom, top, and side surfaces of a sample to be tested, respectively. The first light source in the first camera assembly emits light horizontally toward the sample-bearing area. The second light source in the second camera assembly is horizontally positioned around and relative to the second camera. The third light source in the third camera assembly is horizontally located on both sides of the third camera and is also horizontally positioned relative to the third camera. This image acquisition device is equipped with light sources of different structures for cameras at different shooting positions, meeting the different supplementary lighting needs of different shooting positions and improving the imaging effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of label detection, and more particularly to an image acquisition device. BACKGROUND

[0002] Generally, after the production of some products with outer packaging (such as pre-packaged food), image acquisition and image recognition processing are needed by using visual detection equipment, so as to identify and detect the product packaging after forming a graphic record, and ensure that the label information such as text, graphics, symbols and the like on the product packaging meet the national standards.

[0003] At present, in the process of image acquisition of the sample to be detected by using the visual detection equipment, in order to ensure that each side of the sample to be detected can form an image record, generally, multiple shooting devices are used to perform image acquisition operation from different positions, or a shooting device is used to perform image acquisition operation from different positions in sequence, but in the above image acquisition and shooting operation process, the shooting devices at different shooting positions are always configured with the same structure of light source to directly irradiate the sample to be detected, which leads to the problems of reflection, glare, low image brightness and the like in the image acquisition process due to factors such as mirror reflection or insufficient brightness of the light source, and cannot meet the different light supplement requirements of different shooting positions, resulting in poor imaging effect. SUMMARY

[0004] The present application aims to provide an image acquisition device, which aims to solve the problem that in the process of image acquisition of the sample to be detected by using the visual detection equipment, the shooting devices at different shooting positions are always configured with the same structure of light source to directly irradiate the sample to be detected, which leads to the problems of reflection, glare, low image brightness and the like in the image acquisition process due to factors such as mirror reflection or insufficient brightness of the light source, and cannot meet the different light supplement requirements of different shooting positions, resulting in poor imaging effect.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide an image acquisition device for shooting the packaging image of a product with outer packaging, and further acquiring the label information on the packaging image, comprising:

[0006] The rotating table comprises a rotating base, a supporting side plate and a transparent platform, the supporting side plate is fixedly connected to the rotating base and extends away from the rotating base until the transparent platform is fixedly connected, and the transparent platform has a sample receiving area which avoids the supporting side plate in the vertical direction and is used for placing the sample to be detected;

[0007] The first camera assembly comprises a first camera and a plurality of first light sources, the first camera is located on a side of the transparent platform facing the rotating base and is spaced apart from the sample receiving area in the vertical direction, and is used for collecting the bottom surface image of the sample to be tested. Each first light source is arranged on the side of the transparent platform facing the rotating base and cooperates to surround the sample receiving area, and the light emitting direction of each first light source is along the horizontal direction and faces the sample receiving area.

[0008] The second camera assembly comprises a second camera and a plurality of second light sources, the second camera is located on a side of the transparent platform facing away from the rotating base and is spaced apart from the sample receiving area in the vertical direction, and is used for collecting the top surface image of the sample to be tested. Each second light source is arranged to surround the second camera in the horizontal direction and is movably arranged relative to the second camera, and is used for adjusting the included angle range between the light emitting direction of each second light source and the optical axis of the second camera.

[0009] The third camera assembly comprises a third camera and a plurality of third light sources, the third camera is located on a side of the transparent platform facing away from the rotating base and is spaced apart from the sample receiving area in the horizontal direction, and is used for collecting the side surface image of the sample to be tested. Each third light source is movably arranged relative to the third camera on both sides of the third camera in the horizontal direction, and is used for adjusting the included angle range between the light emitting direction of each third light source and the optical axis of the third camera.

[0010] In one of the embodiments, the first support part, the second support part suspended above the first support part, and the third support part fixedly connected with the first support part and the second support part are further included. The rotating base is arranged on the first support part, the first camera is arranged on the rotating base, the second camera is arranged on the second support part, each second light source is movably connected to the second support part, the third camera is arranged on the third support part, and each third light source is movably connected to the third support part.

[0011] In one of the embodiments, the rotating base comprises four support side plates arranged in pairs opposite to each other. One end of each support side plate is fixedly connected with the rotating base, and the other end is fixedly connected with the four peripheral edges of the transparent platform.

[0012] In one of the embodiments, the first camera assembly further comprises a plurality of first diffusion plates. Each first diffusion plate is arranged on the side of the transparent platform facing the rotating base and cooperates to surround the sample receiving area. Each first light source surrounds the outer periphery of the enclosed area of each first diffusion plate, and the light emitting direction of each first light source is along the horizontal direction and faces each adjacent first diffusion plate.

[0013] In one of the embodiments, the first camera assembly comprises four first diffusion plates arranged in pairs opposite to each other, and four groups of first light sources arranged in pairs opposite to each other. The first camera is arranged at the center of the rotating base. The four groups of first diffusion plates are respectively located around the four sample receiving areas. The four groups of first light sources are respectively located around the four enclosed areas of the four first diffusion plates. The four groups of first light sources are respectively fixedly connected with the four support side plates.

[0014] In one of the embodiments, the second camera assembly further comprises a connecting ring arranged on the second support part and spaced apart from the sample receiving area along the vertical direction, connecting arms equidistantly arranged on the outer periphery of the connecting ring along the circumferential direction of the outer periphery of the connecting ring, and a plurality of sets of second diffusion plates each arranged on the light emitting surface of a second light source.

[0015] In one of the embodiments, the connecting arm comprises a first arm body rotationally connected to the outer periphery of the connecting ring, and a second arm body movably connected to the first arm body along the extension direction of the first arm body, and the second light source is rotationally connected to the end of the second arm body away from the first arm body, for adjusting the relative distance between the second light source and the sample to be measured.

[0016] In one of the embodiments, the second camera assembly comprises four first arm bodies rotationally connected to the outer periphery of the connecting ring along the circumferential direction of the outer periphery of the connecting ring at an angle of 90°, four second arm bodies each movably connected to the first arm body along the extension direction of the first arm body, four sets of second light sources each rotationally connected to the end of the second arm body away from the first arm body, and four sets of second diffusion plates each arranged on the light emitting surface of the second light source.

[0017] In one of the embodiments, the angle between the light emitting direction of each second light source and the optical axis of the second camera is consistent, and the adjustment range is 0°-60°.

[0018] In one of the embodiments, the third camera assembly further comprises a linear slide rail arranged on the third support part along the vertical direction, a slide block movably connected to the linear slide rail, and a plurality of lamp holders arranged on the third support part and located on both sides of the linear slide rail along the horizontal direction, and the third camera is arranged on the slide block, and each third light source is rotationally connected to the lamp holder.

[0019] In one of the embodiments, the third camera assembly comprises two lamp holders arranged on the third support part and located on both sides of the linear slide rail along the horizontal direction, and two sets of third light sources each rotationally connected to the lamp holder.

[0020] In one of the embodiments, the angle between the light emitting direction of each third light source and the optical axis of the third camera is consistent, and the adjustment range is 0°-60°.

[0021] In one of the embodiments, the image acquisition device further comprises an optical displacement sensor arranged on the second camera and in communication connection with the slide block, for acquiring the height of the sample to be measured and adjusting the shooting position of the third camera through the slide block.

[0022] In one of the embodiments, the sample receiving area has a groove, and a low-reflective glass is arranged in the groove.

[0023] In one of the embodiments, the image acquisition device further comprises a gravity sensor arranged on the sample receiving area, and a control component in communication connection with the gravity sensor, the rotating base, the first camera, the first light source, the second camera, the second light source, the third camera and the third light source, respectively, for regulating the working states of the rotating base, the first camera, the first light source, the second camera, the second light source, the third camera and the third light source, respectively, after the gravity sensor detects that the sample to be measured is placed on the sample receiving area.

[0024] In one of the embodiments, the first camera, the second camera and the third camera are all area array cameras, the first light source and the second light source are both LED light strips, and the third light source is a rectangular soft light box.

[0025] The image acquisition device provided by the application has the beneficial effects that the image acquisition device comprises a rotating platform provided with a sample receiving area, and a first camera assembly, a second camera assembly and a third camera assembly for acquiring images of the bottom surface, the top surface and the side surface of a sample to be measured, respectively, wherein the sample to be measured can be placed on the rotating platform, when the first camera assembly acquires images of the bottom surface of the sample to be measured, since the light emitting directions of the first light sources are along the horizontal direction towards the sample receiving area, the first light sources will not cause reflection or glare when the first camera captures the sample to be measured through the transparent platform, when the second camera assembly acquires images of the top surface of the sample to be measured, since the second light sources are arranged around the second camera along the horizontal direction and movably relative to the second camera, by adjusting the included angle between the light emitting direction of each second light source and the optical axis of the second camera, the light emitted by each second light source can be better collected on the top surface of the sample to be measured, avoiding phenomena such as glare and low image brightness caused by uneven illumination or low brightness of the second light sources, when the third camera assembly acquires images of the side surface of the sample to be measured, since the third light sources are arranged on both sides of the third camera along the horizontal direction and movably relative to the third camera, by adjusting the included angle between the light emitting direction of each third light source and the optical axis of the third camera, the light emitted by each third light source can be better collected on the side surface of the sample to be measured, also avoiding phenomena such as glare and low image brightness caused by uneven illumination or low brightness of the third light sources, it can be seen that the image acquisition device corresponds to the cameras at different shooting positions and is provided with light sources of different structures, meeting the different light supplementing requirements of different shooting positions and improving the imaging effect. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0027] Figure 1 The structural schematic diagram of the image acquisition device provided by some embodiments of the present application is shown in the figure.

[0028] Figure 2 For Figure 1 The bottom structural schematic diagram of the connection relationship between the rotating platform of the image acquisition device and the first camera assembly in some embodiments of the present application is shown in the figure (the rotating base and the first camera have been omitted).

[0029] Figure 3 For Figure 1 The structural schematic diagram of the connection relationship between the connecting lamp ring, the connecting arm and the second light source of the image acquisition device in some embodiments of the present application is shown in the figure.

[0030] In the figure: 10, image acquisition device; 100, rotating platform; 110, rotating base; 120, support side plate; 130, transparent platform; 132, sample receiving area; 134, groove; 136, low reflection glass; 200, first camera assembly; 210, first camera; 220, first light source; 230, first diffusion plate; 300, second camera assembly; 310, second camera; 320, second light source; 330, connecting lamp ring; 340, connecting arm; 342, first arm body; 344, second arm body; 400, third camera assembly; 410, third camera; 420, third light source; 430, linear slide rail; 440, sliding block; 450, lamp holder; 510, first support part; 520, second support part; 530, third support part. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, indicate directions or positions based on the directions or positions shown in the drawings, and are used for convenience of description and simplification of description only, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0035] Please refer to Figure 1 The image acquisition device 10 provided by some embodiments of the present application will be described. The image acquisition device 10 is used to capture images of each side of the outer packaging of a product (mainly food with outer packaging), so that the label information on the outer packaging of the product forms an image record, so as to identify and detect the label information. The image acquisition device 10 includes a rotating platform 100, a first camera assembly 200, a second camera assembly 300 and a third camera assembly 400. The rotating platform 100 has a sample receiving area 132 for placing a sample to be tested (not shown in the figure). When the sample to be tested is placed on the sample receiving area 132, the first camera assembly 200 can capture the bottom surface image of the sample to be tested, the second camera assembly 300 can capture the top surface image of the sample to be tested, and the third camera assembly 400 can cooperate with the rotating platform 100 to capture the side surface image of the sample to be tested. It should be noted that the third camera assembly 400 can capture the side surface of the sample to be tested multiple times by rotating the sample to be tested through the rotating platform 100, that is, the complete side surface image of the sample to be tested can be obtained by splicing. In order to avoid interference between the first camera assembly 200, the second camera assembly 300 and the third camera assembly 400, the first camera assembly 200, the second camera assembly 300 and the third camera assembly 400 are independent of each other.

[0036] With Figure 1For example, in some embodiments, the image acquisition device 10 further comprises a first support part 510, a second support part 520 suspended above the first support part 510, and a third support part 530 fixedly connected to the first support part 510 and the second support part 520 on opposite sides, respectively. The rotating platform 100 and the first camera assembly 200 are arranged on the first support part 510, the second camera assembly 300 is arranged on the second support part 520, and the third camera assembly 400 is arranged on the third support part 530.

[0037] Specifically, in some embodiments, the rotating platform 100 comprises a rotating base 110, a support side plate 120, and a transparent platform 130. The rotating base 110 is arranged on the first support part 510 and can rotate about its central axis. The support side plate 120 is fixedly connected to the rotating base 110 and extends vertically away from the rotating base 110 until it is fixedly connected to the transparent platform 130. The transparent platform 130 has a sample receiving area 132 that avoids the support side plate 120 in the vertical direction. The sample receiving area 132 is used to place the sample to be tested.

[0038] Please refer to Figure 1 and Figure 2 More specifically, in some embodiments, the rotating platform 100 comprises four support side plates 120 arranged opposite to each other. The rotating base 110 and the transparent platform 130 are both regular quadrangular prisms. One end of each support side plate 120 is fixedly connected to the four peripheral edges of the rotating base 110, and the other end is fixedly connected to the four peripheral edges of the transparent platform 130. In this way, the support side plates 120 can be tightly connected to the rotating base 110 and the transparent platform 130 while avoiding the sample receiving area 132 in the vertical direction.

[0039] More specifically, in some embodiments, the four support side plates 120 are connected end to end in a closed space along the opposite sides in the horizontal direction. The first camera assembly 200 can be arranged in the closed space formed by the four support side plates 120.

[0040] More specifically, in some embodiments, the sample receiving area 132 is a square area located at the center of the transparent platform 130. In other embodiments, the sample receiving area 132 can also be a circular (or other shape) area located at the center of the transparent platform 130.

[0041] More specifically, in some embodiments, a groove 134 is formed on the side of the sample receiving area 132 opposite to the rotating base 110, and a low-reflection glass 136 is embedded in the groove 134. In this way, when the first camera assembly 200 is used to capture the image of the bottom surface of the sample to be measured through the transparent platform 130, the light source in the first camera assembly 200 will not cause reflection on the transparent platform 130.

[0042] Further, in some embodiments, the first camera assembly 200 includes a first camera 210 and a plurality of first light sources 220. The first camera 210 is located on the side of the transparent platform 130 facing the rotating base 110 and is spaced apart from the sample receiving area 132 in the vertical direction. The first camera 210 is used to capture the image of the bottom surface of the sample to be measured. Each first light source 220 is arranged on the side of the transparent platform 130 facing the rotating base 110 and surrounds the sample receiving area 132. The light emitting direction of each first light source 220 is along the horizontal direction towards the side where the sample receiving area 132 is located. In this way, the first light sources 220 provide lighting conditions for the first camera 210 while avoiding glare and reflection caused by direct light on the transparent platform 130.

[0043] Further, in some embodiments, the first camera assembly 200 further includes a plurality of first diffuser plates 230. Each first diffuser plate 230 is arranged on the side of the transparent platform 130 facing the rotating base 110 and surrounds the sample receiving area 132. Each first light source 220 surrounds the outer periphery of the area enclosed by each first diffuser plate 230, and the light emitting direction of each first light source 220 is along the horizontal direction towards each adjacent first diffuser plate 230. In this way, the light emitted by each first light source 220 passes through the corresponding first diffuser plate 230 and then enters the sample receiving area 132.

[0044] Specifically, in some embodiments, the first camera assembly 200 includes four sets of first diffuser plates 230 and four sets of first light sources 220. The first camera 210 is arranged at the center of the rotating base 110. Two first diffuser plates 230 are arranged on the side of the transparent platform 130 facing the rotating base 110 and are located at the four corners of the sample receiving area 132 to surround the sample receiving area 132. The four sets of first light sources 220 are respectively fixedly connected to the ends of the adjacent support side plates 120 on the side of the transparent platform 130 to surround the four sets of first diffuser plates 230.

[0045] More specifically, in some embodiments, the first camera 210 is a planar array camera, and the first light source 220 is an LED light strip.

[0046] Further, in some embodiments, the second camera assembly 300 includes a second camera 310 and a plurality of second light sources 320, wherein the second camera 310 is located on the side of the transparent platform 130 opposite to the rotating base 110 and is spaced apart from the sample receiving area 132 in the vertical direction, each second camera 310 is used to capture the top surface image of the sample to be tested, each second light source 320 is arranged around the outer periphery of the second camera 310 in the horizontal direction, and each second light source 320 is movably arranged relative to the second camera 310, used to adjust the included angle range between the light emitting direction of each second light source 320 and the optical axis of the second camera 310, so that the light emitted by each second light source 320 around the outer periphery of the second camera 310 can be better concentrated on the top surface of the sample to be tested, avoiding the phenomena of glare and low image brightness caused by uneven illumination or low brightness of the second light source 320.

[0047] Please refer to Figure 1 and Figure 3 , specifically, in some embodiments, the second camera assembly 300 further includes a connecting lamp ring 330, a plurality of connecting arms 340, and a plurality of second diffusion plates (not shown in the figure), wherein the second camera 310 is arranged on the second support part 520 and passes through the center of the connecting lamp ring 330, the connecting lamp ring 330 is arranged on the second support part 520 and is spaced apart from the sample receiving area 132 in the vertical direction, each connecting arm 340 is arranged on the outer periphery of the connecting lamp ring 330 in the circumferential direction at equal intervals to surround the second camera 310, and each second light source 320 is rotatably connected to one end of each connecting arm 340 away from the connecting lamp ring 330.

[0048] More specifically, in some embodiments, the connecting arm 340 includes a first arm body 342 and a second arm body 344, wherein one end of the first arm body 342 is rotatably connected to the outer periphery of the connecting lamp ring 330, the second arm body 344 is movably connected to one end of the first arm body 342 away from the connecting lamp ring 330 in the extension direction of the first arm body 342, and the second light source 320 is rotatably connected to one end of the second arm body 344 away from the first arm body 342, so that the adjustment of the included angle range between the light emitting direction of the second light source 320 and the optical axis of the second camera 310 is realized, and at the same time, the distance between the second light source 320 and the sample to be tested is also adjusted, so that the relative distance between the second light source 320 and the sample to be tested can be flexibly adjusted according to the height of different samples to be tested, and appropriate lighting effect is provided.

[0049] More specifically, in some embodiments, the second camera assembly 300 described above comprises four first arm bodies 342, four second arm bodies 344, four groups of second light sources 320 and four groups of second diffusion plates, wherein the four first arm bodies 342 are sequentially connected to the outer periphery of the connecting lamp ring 330 at a 90° angle along the circumference of the outer periphery of the connecting lamp ring 330, the four second arm bodies 344 are respectively and sequentially movably connected to one end of each first arm body 342 away from the connecting lamp ring 330 along the extension direction of the first arm body 342, the four groups of second light sources 320 are respectively and sequentially arranged on one end of each second arm body 344 away from the first arm body 342, and the four groups of second diffusion plates are respectively and sequentially arranged on the light emitting surface of each second light source 320.

[0050] More specifically, in some embodiments, the second camera 310 described above is a planar array camera, the second light source 320 is an LED light strip with a length less than or equal to the side length of the transparent platform 130, the angle between the light emitting direction of each second light source 320 and the optical axis of the second camera 310 is consistent, and the adjustment range is 0°-60°; in a specific embodiment, the angle between each second light source 320 and the optical axis of the second camera 310 is adjusted to 30°; in another specific embodiment, the angle between each second light source 320 and the optical axis of the second camera 310 is adjusted to 45°.

[0051] Further, in some embodiments, the third camera assembly 400 described above comprises a third camera 410 and a plurality of third light sources 420, wherein the third camera 410 is located on the side of the transparent platform 130 facing away from the rotating base 110 and is spaced apart from the sample receiving area 132 in the horizontal direction, the third camera 410 is used to capture side images of the sample to be tested, and each third light source 420 is movably arranged on both sides of the third camera 410 in the horizontal direction and relative to the third camera 410, used to adjust the angle range between the light emitting direction of each third light source 420 and the optical axis of the third camera 410, so that the light emitted by each third light source 420 on both sides of the third camera 410 can be better collected on the side of the sample to be tested, avoiding phenomena such as glare and low image brightness due to uneven illumination or low brightness of the third light source 420.

[0052] Further, in some embodiments, the third camera assembly 400 described above further comprises a linear slide rail 430, a sliding block 440 and a lamp holder 450, wherein the linear slide rail 430 is arranged on the third support portion 530 in the vertical direction, the sliding block 440 is movably arranged on the linear slide rail 430 and fixedly connected to the third camera 410, the lamp holder 450 is arranged on the third support portion 530 in the horizontal direction on both sides of the linear slide rail 430, the third camera 410 is arranged on the sliding block 440, and the third light source 420 is rotatably connected to the lamp holder 450.

[0053] Specifically, in some embodiments, the third camera assembly 400 described above comprises two lamp holders 450 and two sets of third light sources 420, wherein the two lamp holders 450 are respectively located on both sides of the linear slide rail 430 in the horizontal direction and are arranged on the third support part 530, and the two sets of third light sources 420 are respectively and one by one rotationally connected to each lamp holder 450.

[0054] More specifically, in some embodiments, the third camera 410 described above is a surface array camera, and the third light source 420 is a rectangular soft light box, the included angle between the light emitting direction of each third light source 420 and the optical axis of the third camera 410 is consistent, and the adjustment range is 0°-60°; in a specific embodiment, the included angle between each third light source 420 and the optical axis of the third camera 410 is adjusted to 30°; in a specific embodiment, the included angle between each third light source 420 and the optical axis of the third camera 410 is adjusted to 45°.

[0055] Further, in some embodiments, the image acquisition device 10 described above further comprises an optical displacement sensor (not shown in the figure), which is arranged on the second camera 310 and is in communication connection with the slide block 440, so as to obtain the height of the sample to be measured, and then adjust the shooting position of the third camera 410 through the slide block 440 according to the height of the sample to be measured.

[0056] Further, in some embodiments, the image acquisition device 10 described above further comprises a gravity sensor (not shown in the figure) and a control assembly (not shown in the figure), the gravity sensor is arranged on the sample receiving area 132 for detecting whether the sample to be measured is placed on the sample receiving area, and the control assembly is respectively in communication connection with the gravity sensor, the rotating base 110, the first camera 210, the first light source 220, the second camera 310, the second light source 320, the third camera 410, the third light source 420 and the slide block 440, so as to respectively control the working state of the rotating base 110, the first camera 210, the first light source 220, the second camera 310, the second light source 320, the third camera 410, the third light source 420 and the slide block 440 after the gravity sensor detects that the sample to be measured is placed on the sample receiving area 132, so that the first camera 210 and the first light source 220, the second camera 310 and the second light source 320, and the rotating base 110, the third camera 410, the third light source 420 and the slide block 440 can work independently of each other.

[0057] The image acquisition device 10 has the beneficial effects that the image acquisition device 10 comprises the rotating table 100 provided with the sample receiving area 132, and the first camera assembly 200, the second camera assembly 300 and the third camera assembly 400 for acquiring the bottom surface image, the top surface image and the side surface image of the sample respectively, wherein the sample can be placed on the rotating table 100, when the first camera assembly 200 acquires the bottom surface image of the sample, the light emitted by the first light source 220 is along the horizontal direction towards the sample receiving area 132, so that the first light source 220 does not cause the reflection and glare phenomenon when the first camera 210 captures the sample through the transparent platform 130, when the second camera assembly 300 acquires the top surface image of the sample, the second light source 320 is along the horizontal direction and is movably arranged around and relative to the second camera 310, by adjusting the included angle between the light emitting direction of the second light source 320 and the optical axis of the second camera 310, the light emitted by the second light source 320 can be better collected on the top surface of the sample, avoiding the glare and low image brightness caused by the non-uniform illumination or low brightness of the second light source 320, when the third camera assembly 400 acquires the side surface image of the sample, the third light source 420 is along the horizontal direction and is movably arranged on both sides of the third camera 410 and relative to the third camera 410, by adjusting the included angle between the light emitting direction of the third light source 420 and the optical axis of the third camera 410, the light emitted by the third light source 420 can be better collected on the side surface of the sample, avoiding the glare and low image brightness caused by the non-uniform illumination or low brightness of the third light source 420, it can be seen that the image acquisition device 10 is provided with light sources of different structures corresponding to the cameras of different shooting positions, which meets the different light supplementing requirements of different shooting positions and improves the imaging effect.

[0058] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An image capturing device for taking a package image of a product having an outer package, and further acquiring label information on the package image, characterized by, The application relates to a rotating platform, which comprises a rotating base, a supporting side plate and a transparent platform, the supporting side plate is fixedly connected to the rotating base and extends away from the rotating base until the transparent platform is fixedly connected, the transparent platform has a sample receiving area which avoids the supporting side plate in the vertical direction and is used for placing a sample to be tested. A first camera assembly comprises a first camera and a plurality of first light sources, the first camera is located on one side of the transparent platform facing the rotating base and is spaced apart from the sample receiving area in the vertical direction, and is used for collecting a bottom image of the sample to be tested; each first light source is arranged on one side of the transparent platform facing the rotating base and cooperatively surrounds the sample receiving area, and the light emitting direction of each first light source is along the horizontal direction towards the sample receiving area, so as to avoid the reflection phenomenon caused by the direct reflection of the first light source on the transparent platform. A second camera assembly comprises a second camera and a plurality of second light sources, the second camera is located on one side of the transparent platform away from the rotating base and is spaced apart from the sample receiving area in the vertical direction, and is used for collecting a top image of the sample to be tested; each second light source is arranged around the second camera in the horizontal direction and is movably arranged relative to the second camera, and is used for adjusting the included angle range between the light emitting direction of each second light source and the optical axis of the second camera. A third camera assembly comprises a third camera and a plurality of third light sources, the third camera is located on one side of the transparent platform away from the rotating base and is spaced apart from the sample receiving area in the horizontal direction, and is used for collecting a side image of the sample to be tested; each third light source is arranged on both sides of the third camera in the horizontal direction and is movably arranged relative to the third camera, and is used for adjusting the included angle range between the light emitting direction of each third light source and the optical axis of the third camera. The sample receiving area is located at the center of the transparent platform; the sample receiving area has a groove, and low-reflection glass is arranged in the groove, so as to avoid the reflection phenomenon caused by the light source in the first camera assembly on the transparent platform when the first camera assembly collects the bottom image of the sample to be tested through the transparent platform. The first camera assembly further comprises a plurality of first diffusion plates, each first diffusion plate is arranged on one side of the transparent platform facing the rotating base and cooperatively surrounds the sample receiving area, each first light source surrounds the outer periphery of the enclosed area of each first diffusion plate, and the light emitting direction of each first light source is along the horizontal direction towards each adjacent first diffusion plate. The application further comprises a first supporting part, a second supporting part suspended above the first supporting part, and a third supporting part fixedly connected with the first supporting part and the second supporting part, the rotating base is arranged on the first supporting part, the first camera is arranged on the rotating base, the second camera is arranged on the second supporting part, each second light source is movably connected to the second supporting part, the third camera is arranged on the third supporting part, and each third light source is movably connected to the third supporting part. ​ 2. The image acquisition device of claim 1, wherein, ​ 3. The image acquisition device of claim 2, wherein, The rotating platform comprises four pairs of support side plates arranged oppositely, one end of each support side plate is fixedly connected with the rotating base, and the other end is fixedly connected with the four peripheral edges of the transparent platform.

4. The image acquisition device of claim 3, wherein, The first camera assembly comprises four pairs of first diffusion plates arranged oppositely, and four groups of first light sources arranged oppositely, the first camera is arranged at the center of the rotating base, four groups of the first diffusion plates are arranged at the four peripheries of the sample receiving area, four groups of the first light sources are arranged at the four peripheries of the enclosed area of the four first diffusion plates, and four groups of the first light sources are fixedly connected with four pairs of the support side plates.

5. The image acquisition device of claim 2, wherein, The second camera assembly further comprises a connecting lamp ring arranged on the second support part and spaced from the sample receiving area in the vertical direction, connecting arms arranged on the outer periphery of the connecting lamp ring at equal intervals in the circumferential direction of the outer periphery of the connecting lamp ring, and a plurality of groups of second diffusion plates arranged on the light emitting surfaces of the second light sources respectively, the second camera is arranged on the second support part and penetrates through the center of the connecting lamp ring, and the second light sources are rotatably connected to one ends of the connecting arms away from the connecting lamp ring respectively.

6. The image acquisition device of claim 5, wherein, The connecting arm comprises a first arm body rotatably connected to the outer periphery of the connecting ring, and a second arm body movably connected to the first arm body in the extension direction of the first arm body, and the second light source is rotatably connected to one end of the second arm body away from the first arm body, for adjusting the relative distance between the second light source and the sample to be measured.

7. The image acquisition device of claim 6, wherein, The second camera assembly comprises four first arm bodies rotatably connected to the outer periphery of the connecting lamp ring at an angle of 90° in the circumferential direction of the outer periphery of the connecting lamp ring, four second arm bodies movably connected to the first arm bodies in the extension direction of the first arm bodies respectively, four groups of second light sources rotatably connected to one ends of the second arm bodies away from the first arm bodies respectively, and four groups of second diffusion plates arranged on the light emitting surfaces of the second light sources respectively.

8. The image acquisition device of claim 7, wherein, The angle between the light emitting direction of each second light source and the optical axis of the second camera is consistent, and the adjustment range is 0°-60°.

9. The image acquisition device of claim 2, wherein, The third camera assembly further comprises a linear slide rail arranged on the third support part in the vertical direction, a slide block movably connected to the linear slide rail, and a plurality of lamp holders arranged on the third support part on both sides of the linear slide rail in the horizontal direction, the third camera is arranged on the slide block, and each third light source is rotatably connected to each lamp holder.

10. The image acquisition device of claim 9, wherein, The third camera assembly comprises two lamp holders arranged on the third support part on both sides of the linear slide rail in the horizontal direction, and two groups of third light sources rotatably connected to the lamp holders respectively.

11. The image acquisition device of claim 10, wherein, The angle between the light emitting direction of each third light source and the optical axis of the third camera is consistent, and the adjustment range is 0°-60°.

12. The image acquisition device of claim 9, wherein, The image acquisition device further comprises an optical displacement sensor arranged on the second camera and in communication connection with the slide block, for acquiring the height of the sample to be measured and adjusting the shooting position of the third camera through the slide block.

13. The image acquisition device of claim 1, wherein, The image acquisition device further comprises a gravity sensor arranged on the sample receiving area, and a control assembly in communication connection with the gravity sensor, the rotating base, the first camera, the first light source, the second camera, the second light source, the third camera and the third light source, respectively, for regulating the working states of the rotating base, the first camera, the first light source, the second camera, the second light source, the third camera and the third light source, respectively, after the gravity sensor detects that the sample to be tested is placed on the sample receiving area.

14. The image acquisition device according to any of claims 1-13, characterized in that, The first camera, the second camera and the third camera are all area array cameras, the first light source and the second light source are both LED light strips, and the third light source is a rectangular soft light box.

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