Depth Acquisition Method of Dynamic Scene with Structured Light Based on Coded Grid Template

Abstract

The invention discloses a structured light dynamic scene depth acquisition method based on a coded grid template, which mainly solves the problems in the prior art that the measurement depth accuracy is low and the measurement effect is easily affected by the measurement scene. The implementation steps are as follows: design a binary grid template coded by a 2-element 3-degree De Bruijn sequence; obtain the reference plane image and the deformed grid image respectively through the binary grid template; perform line extraction on the deformed grid image and the reference plane image respectively operation to obtain the broken-line graph and vertical-line graph of the grid image and the broken-line graph and vertical-line graph of the reference plane; respectively decode the deformed grid image and the vertical-line graph of the reference plane to obtain the corresponding vertical-line serial number; according to the The serial number is used to obtain the matching point of the pixel point on the deformed grid image in the reference plane; according to the principle of triangulation distance measurement, the depth value of each point in the vertical line is calculated. The invention has high measurement precision and good robustness to complex scenes, and can be used for the measurement of dynamic three-dimensional scenes.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to a method for acquiring the depth of a dynamic scene with structured light, which can be used for three-dimensional reconstruction or target recognition. Background technique [0002] With the development of computer vision and industrial level, traditional two-dimensional images can no longer meet the needs of people's production and life. Depth information, which reflects the three-dimensional information of the object's surface, greatly improves people's ability to recognize and understand the complexity of real-world objects. Depth information is widely used in the medical field, cultural relic reconstruction, automatic navigation, human-computer interaction and other fields. How to quickly and efficiently obtain the depth information in the 3D scene from the scene has become a current research hotspot. [0003] According to whether contact measurement needs to be p...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to address the deficiencies of the prior art, and propose a structured light dynamic scene depth acquisition method based on coded grid templates, which can reduce measurement errors and improve dynamic scene depth without increasing equipment complexity and calculation complexity. Measurement accuracy of scene depth values

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