[2] Ming-Kuei HU. Visual pattern recognition by moment invariants[J]. IRE Trans. IT,1962,8(2):179-187.
[3] CHEN Chaur-Chin. Improved moment invariants for shape discrimination[J]. Pattern Recognition,1993,26(5):683-686.
[4] Balslev IVAR. Noise tolerance of moment invariants in pattern recognition[J]. Pattern Recognition Letters,1998,19(13):1183-1189.
[6] Cho-Huak TEH, Roland T. CHIN. On image analysis by the methods of moments[J]. IEEE Trans on. PAMI,1988,10(4):496-513.