Image recognition equipment with low angle illumination
A low-angle, image-based technology, applied in the field of image reading, can solve the problems of image acquisition interference, inconvenient accurate recognition of images to be recognized, etc., and achieve high-quality lighting effects
Pending Publication Date: 2019-01-18
SHENZHEN MINDE ELECTRONICS TECH
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[0002] The imaging direction of the imaging device of the image reading device in the related art is basically the same as the irradiation direction of the lighting device. The light of the lighting device will be reflected after hitting the surface of the image to be recognized, and the emitted light will be reflected to the imaging The lens of the device interferes with the imaging effect, making it difficult to accurately identify the image to be identified
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[0020] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
[0021] Such as figure 1 , figure 2 As shown, the image reading device with low-angle illumination in a preferred embodiment of the present invention includes a housing 1, an imaging device 2 and an illumination device 3 arranged on the housing 1, and the image reading device in this embodiment In the example, it is a code scanning gun, and in other embodiments, it can also be other code reading devices.
[0022] When the imaging device 2 is facing the image 4 to be recognized, it can be used to obtain the image information of the image 4 to be recognized. The illuminating device 3 includes an illuminating component 31 for emitting illuminating light. The illuminating direction of the illuminating component 31 forms a...
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The invention relates to an image recognition device with low-angle illumination, comprising an image pick-up device for acquiring image information of an image to be recognized; And an illumination device comprising at least one set of illumination assemblies for emitting illumination light, wherein the illumination direction of the illumination assemblies is at an acute angle to the image-takingdirection of the image-taking device. The illumination direction of the illumination unit is at an acute angle to the image-taking direction of the image-taking device, after the illumination light of the illumination assembly is irradiated onto the image to be recognized from one side of the image pickup device, light rays that smooth the surface of the image to be identified are reflected directly by specular reflection, The surface light of the coarse image to be recognized enters the image taking device uniformly in a diffuse reflection manner without being reflected to the image taking device, so that the information of the image to be recognized is easily highlighted, the information in the image to be recognized is facilitated to be recognized, and the illumination component provides uniform and high-quality illumination for the image taking device.
Description
technical field [0001] The invention relates to the field of image reading, and more specifically, relates to an image reading device with low-angle illumination. Background technique [0002] The imaging direction of the imaging device of the image reading device in the related art is basically the same as the irradiation direction of the lighting device. The light of the lighting device will be reflected after hitting the surface of the image to be recognized, and the emitted light will be reflected to the imaging The lens of the device interferes with the imaging effect, making it difficult to accurately identify the image to be identified. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an image reading device with low-angle illumination. [0004] The technical solution adopted by the present invention to solve the technical problem is to construct an image reading device with low-angle illumination, includi...
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IPC IPC(8): G06K7/10
CPCG06K7/10732G06K7/10881
Inventor 许文焕易仰卿宋红军李黎明
Owner SHENZHEN MINDE ELECTRONICS TECH