Research And Implementation Of Depth Measurement Method Based On Coding Structure Light

The purpose of stereo vision is to establish the 3D model of the observed scenery according to the image information.Psychology of visual perception,we come to know two-dimensional image itself contains a rich 3D information,which the most important is depth information,so depth measurement problem is stereo vision research foundation.Based oi the structured light method of depth measurement using structured light encoding and decoding the advantages of easy depth analysis and research of the feature points,in the areas of quality control,object recognition and so on have great application value.On the basis of in-depth research on the structure of optical encoding and depth of structure light measurement theory,method and key technology.Design and development of the research and implementation of coded structure light method of depth measurement based on.Firstly,a method of depth measurement based on infrared coding structure is proposed..Design a new grid pattern and proposed a sequential codec algorithm,accurate calculation between the reference image and the target image corresponding points offset;in depth measurement proposed a imaging system parameters of linear fitting algorithm,established a linear relationship between target depth and spot pixel offset,and the correction of lens distortion,depth measurement based on linear relationship.Secondly,based on pseudo random array code,a special set of quartet of digital heart-shaped peach coding structured light design,the pattern has the obvious characteristics of the angle coverage,high stability,strong anti-interference advantages and improve the feature extraction and stereo matching speed and accuracy.Finally,in depth measurement,the panoramic camera and projector calibration results,by ray for AC measurement method to obtain the depth information of the object in the space,and used the reference plane of projection ray equations are optimized to obtain the depth information of the high accuracy,based on four directions in the scene objects for 3D reconstruction.