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Adaptive bilateral reference inpainting method for range-gated 3D imaging

A three-dimensional imaging and self-adaptive technology, applied in the field of image processing, can solve the problem of no depth image repair algorithm, etc., and achieve the effect of reducing over-filling or under-filling and removing noise

Active Publication Date: 2021-08-03
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] At present, the algorithms for repairing depth images are mainly aimed at depth images obtained by binocular stereo vision, structured light methods, and time-of-flight algorithms.

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  • Adaptive bilateral reference inpainting method for range-gated 3D imaging
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  • Adaptive bilateral reference inpainting method for range-gated 3D imaging

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints.

[0027] The invention discloses a method for repairing a depth image with self-adaptive bilateral reference, so as to achieve the purpose of effectively complem...

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Abstract

A method for range-gated 3D imaging adaptive bilateral reference restoration, comprising the following steps: Step 1: First, according to the range-gated adjacent two-dimensional spatial slice images, which are represented by A and B frames respectively, a 3D threshold is set, and Use the 3D inversion algorithm to obtain the original depth image to be repaired; step 2: secondly, use the adaptive bilateral reference algorithm to partially fill the missing data between the original depth image and the A-frame image, and obtain a partially filled depth image; step 3: fill the part again The depth image and the B-frame image use the adaptive bilateral reference algorithm to completely fill the missing data to obtain a fully filled depth image; Step 4: Finally, use the adaptive bilateral reference to fill the complete depth image and the (A+B) / 2 image Algorithm smoothing and filtering to obtain a complete and smooth repaired depth image. The invention can achieve the purpose of effectively complementing the holes in the depth image obtained by the range-gated three-dimensional imaging technology and removing noise.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to the restoration technology of range-gated three-dimensional imaging depth images. Background technique [0002] Range-gated imaging is an active imaging technology that uses a pulsed laser as an illumination source and a gated imaging device as a detector. By controlling the delay between the laser pulse and the gated pulse, spatial slice imaging can be achieved, background filtering, and suppression Atmospheric and other backscatter noise to achieve target detection. [0003] In fact, each gated image contains not only brightness information, but also distance information. There is information association in distance between multiple images with the same gate width and different time delays. Using this information association, the three-dimensional information of the target can be inverted by algorithm. At present, laser-gated 3D imaging algorithms mainly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T5/50
CPCG06T5/50G06T2207/30008G06T5/70
Inventor 杨于清王新伟孙亮周燕刘育梁
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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