3D structured light recognition device, system and method

An identification device and structured light technology, applied in the 3D field, can solve the problems of black holes in the depth map, great differences between the position and the reference map, and discrimination, etc., to achieve the reduction of the probability of repetition and the probability of black hole problems. Effect

Pending Publication Date: 2021-08-17
深圳博升光电科技有限公司
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Problems solved by technology

[0003] However, in the prior art, when the image is searched to obtain the 3D depth information of the measured object, the algorithm will have repetitive problems when searching for the picture frame. This algorithm has no way to distinguish clearly during the search calculation. Therefore, there will be confusion in the search, resulting in a large difference between the searched position and the reference map, resulting in a black hole problem in the depth map

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  • 3D structured light recognition device, system and method
  • 3D structured light recognition device, system and method
  • 3D structured light recognition device, system and method

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[0037] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

[0038] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0039] A collection of projections of beams of known spatial orientation is called structured light. 3D structured light principle, such as figure 1 Shown: Using a specific wavelength, invisible infrared laser as the light source, the emitted light is projected on the object through the optical d...

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Abstract

The invention discloses a 3D structured light recognition device, system and method, and the device comprises: an emission module which is configured to emit light to the surface of a measured object; and a receiving module which is configured to be used for receiving at least part of light reflected by the surface of the measured object and acquiring an identification image related to the measured object, wherein the recognition image comprises a plurality of light spot blocks which are arranged in an array, and the light spot blocks are arranged in a staggered mode in the first direction and in a staggered mode in the second direction. According to the 3D structured light recognition device provided by the embodiment of the invention, the arrangement of the light spots in the obtained recognition image in the first direction and the second direction is more random by adjusting the angle setting of the transmitting module and the receiving module, so that the repeatability of finding the light spots in the first direction and the second direction is reduced, and as the repeatability probability of the light spots in the search frame is reduced, the probability of the black hole problem of the depth map is also greatly reduced.

Description

technical field [0001] The present application generally relates to the field of 3D technology, and specifically relates to a 3D structured light recognition device, system and method. Background technique [0002] 3D modules are more and more widely used in the new payment industry. At present, in the new face payment industry, 3D structured light modules are widely used due to their advantages of high precision, low cost, and low power consumption, and have become the mainstream of current equipment. [0003] However, in the prior art, when the image is searched to obtain the 3D depth information of the measured object, the algorithm will have repetitive problems when searching for the picture frame. This algorithm has no way to distinguish clearly during the search calculation. Therefore, there will be confusion in the search, resulting in a large difference between the searched position and the reference map, resulting in a black hole problem in the depth map. Content...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20
CPCG06V10/145G06V10/147
Inventor 王百顺余建男徐小岚
Owner 深圳博升光电科技有限公司
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