Three-dimensional reconstruction method considering multi-stage matching propagation of weak texture area
A technology of 3D reconstruction and texture area, which is applied in the field of analysis and measurement, can solve problems such as bumpy water surface, hollow wall, unsatisfactory image matching and reconstruction effect, etc., and achieve the effect of overcoming illumination changes
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[0024] refer to figure 1 , figure 2 and image 3 , a 3D reconstruction method of the present invention that takes into account multi-stage matching and propagation of weak texture areas, uses the initial sparse matching results based on SIFT to estimate the homography matrix between images, and densely matches the reference image and the image to be matched after projection deformation correction between images. Taking into account the weak texture area and based on the assumption of segmental smoothness of the scene, matching propagation and 3D reconstruction are carried out in three stages, which is a step-by-step constraint and layer-by-layer progressive process. The first stage: use the existing algorithm to complete the pixel-level matching propagation and construct the initial 3D model at the same time, and complete the spatial plane reconstruction of the texture-rich area on the basis of image segmentation; the second stage: based on the image segmentation and the 3D...
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