High-precision three-dimensional reconstruction method and system based on binary surface structured light

Abstract

The invention provides a high-precision three-dimensional reconstruction method and system based on binary surface structured light. The method comprises the steps of calibrating a CCD high-definitioncamera and a projector, projecting directional light source emitted by an LED lamp onto a scene where a target object is located, acquiring an image through the CCD high-definition camera, matching acontour approximate to the target object through a self-adaptive identification module, carrying out structured light information coding according to the result recognized by the self-adaptive identification module, projecting the structured light to the approximate position where the plane of the target contour is located by the projector, the CCD high-definition camera acquiring a modulated image projected on a target object, combining the structural light characteristic points with the gradient information obtained by the LED light contour to obtain a final three-dimensional image. The three-dimensional reconstruction system has the beneficial effects that the adaptability of the three-dimensional reconstruction system to environmental changes can be improved, the reconstruction precision and accuracy of the target object are effectively improved, and the problem that the operation cost is increased due to the multi-objective environment is solved.

Description

technical field [0001] The invention relates to the technical field of three-dimensional reconstruction, in particular to a high-precision three-dimensional reconstruction method and system based on binary surface structured light. Background technique [0002] 3D reconstruction technology is in the field of interdisciplinary research, involving many disciplines such as computer vision, computer graphics, image processing, and pattern recognition. Through the research of domestic and foreign researchers in recent decades, a large number of research results have emerged in both theory and application. The development of structured light 3D reconstruction was initially developed by Rioux et al. in the 1980s, who published a variety of light point rangefinders based on point structured light mode, which combined the reflected light point information collected from the surface of the measured object with the triangulation principle, In order to obtain the three-dimensional info...

AI Technical Summary

Problems solved by technology

[0006] Defects of the current technology: Although the current 3D measurement products can achieve high-precision and high-efficiency measurement, they can only simply measure a known object, and then perform 3D measurement after manually aligning the 3D measurement scanner

When there are multiple disturbing objects in the target scene, it is impossible to independently judge which object is the measurement target without human interference, which will cause inaccurate measurement and measurement errors

There are inherent occlusion problems in the scanning of multiple objects, and the accuracy algorithm for matching after multi-angle and multi-period measurement is also a difficult problem in 3D reconstruction

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