Robust image hashing with embedding vector variance of LLE
We investigate the use of LLE in image hashing. We find that embedding vector variances of LLE are approximately linearly changed by content-preserving operations. We propose a robust image hashing based on this LLE property. Our hashing outperforms some notable algorithms in classification performances.
image hashing robust hashing locally linear embedding data reduction secondary image cie l?a?b? l ? a ? b ? color space l?a?b? l ? a ? b ? l?a?b? l ? a ? b ? l ? a ? b ?