Title :
Adaptive MHDCT coding of images
Author :
Barazande-Pour, M. ; Mark, Jon W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
An adaptive coding scheme, based on a modification of the discrete cosine transformation, is used to encode image signals. The coding performance is compared with those of the DCT and the Walsh-Hadamard transform. The proposed coding scheme is simpler than the DCT, but its performance is quite close to that of the DCT. The adaptivity in our coder is achieved by using a suitable classification method and distributing the available channel capacity to different classes according to their energy level
Keywords :
Hadamard transforms; adaptive signal processing; channel capacity; discrete cosine transforms; image classification; image coding; transform coding; DCT; Walsh-Hadamard transform; adaptive MHDCT coding; channel capacity; classification method; coding performance; energy level; image coding; image signals; modified Hadamard DCT; modified discrete cosine transformation; Adaptive coding; Bit rate; Channel capacity; Data compression; Discrete cosine transforms; Discrete transforms; Energy states; Fourier transforms; Image coding; Karhunen-Loeve transforms;
Conference_Titel :
Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference
Print_ISBN :
0-8186-6952-7
DOI :
10.1109/ICIP.1994.413281
