perform rank transform or census transform to image, make it invariant to illumination changes, it is interesting to actually visualize how transform does
rank transform: adding up the number of neighbors that larger than central pixel
census transform : assigning neighbors that larger than central pixel to 1, 0 otherwise, and aggregate bits to value
To run this code
python rank_transform.py input_imgpath output_imgpath transform_typeoriginal image:
rank transform:
census transform:
