An illumination invariant shadow ratio is introduced. The invariant is calculated using RGB information.
The threshold value needs to be tuned by user for the test images.
A test image is included.
% For Academic & Educational Usage Only
% Please consider citing following reference articles.
% B. Sirmacek and C. Unsalan, "Damaged Building Detection in Aerial Images
% using Shadow Information", 4th International Conference on Recent Advances
% in Space Technologies RAST 2009, Istanbul, Turkey, June 2009.
% C. Unsalan and K. L. Boyer, "Linearized vegetation indices based on a formal
% statistical framework," IEEE Transactions on Geoscience and Remote Sensing,
% vol. 42, pp. 1575-1585, 2004.
Beril Sirmacek (2023). Shadow Detection (https://www.mathworks.com/matlabcentral/fileexchange/54647-shadow-detection), MATLAB Central File Exchange. 取得済み .
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