Title :
Feature extraction capability of some discrete transforms
Author :
WU, JA-LING ; Duh, Wei-Jou
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
The feature extraction capability of discrete cosine transform (DCT), Walsh-Hadamard transform (WHT), discrete Hartley transform (DHT) and their sign transformations are investigated and compared for the recognition of two-dimensional binary patterns. It is shown that the noise immunity of the transform-based feature extraction is rather promising
Keywords :
pattern recognition; transforms; 2D pattern recognition; DCT; DHT; WHT; Walsh-Hadamard transform; discrete Hartley transform; discrete cosine transform; discrete transforms; feature extraction capability; noise immunity; sign transformations; transform-based feature extraction; two-dimensional binary patterns; Computer science; Discrete Fourier transforms; Discrete cosine transforms; Discrete transforms; Feature extraction; Fourier transforms; Karhunen-Loeve transforms; Mean square error methods; Pattern recognition; Speech recognition;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176090
