Ching-Nung Yang, Tse-Shih Chen. Reduce shadow size in aspect ratio invariant visual secret sharing schemes using a square block-wise operation. Pattern Recognition, 39(7):1300-1314, 2006. [doi]
@article{YangC06:19,
title = {Reduce shadow size in aspect ratio invariant visual secret sharing schemes using a square block-wise operation},
author = {Ching-Nung Yang and Tse-Shih Chen},
year = {2006},
doi = {10.1016/j.patcog.2006.01.013},
url = {http://dx.doi.org/10.1016/j.patcog.2006.01.013},
researchr = {https://researchr.org/publication/YangC06%3A19},
cites = {0},
citedby = {0},
journal = {Pattern Recognition},
volume = {39},
number = {7},
pages = {1300-1314},
}