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codes (4)
Harris corner extraction
no vote
Harris corner detection is the basis of feature point detection. The concept of gray difference between adjacent pixels is proposed to judge whether it is corner, edge and smooth area. Harris corner detection principle is to use the moving window to calculate the gray change value in the image, and the key process includes converting to gray image, calculating difference image, Gaussian smoothing, calculating local extremum, and confirming corner.
mhc1021
2020-01-18
0
1
Restore shape from light and shade
no vote
Horn's classic code, suitable for computer image graphics, according to the gray information of each pixel to calculate the surface direction and surface height of each point of the target object
mhc1021
2020-01-15
0
1
Local 3D reconstruction
no vote
It is used to extract a simple representation of available shape information from the diffuse shading of tiny image patches. This produces an intermediate scene descriptor that includes the local shape distribution.
mhc1021
2018-01-05
0
1
sfs
no vote
When determining the constraint conditions, the gray constraint and smooth constraint are separated from the integrability constraint, which makes the calculation formula and solving process more convenient
mhc1021
2017-01-22
1
1
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