Title :
Relative vector probabilities in differential chain-coded line-drawings
Author :
Prasad, Ramj Ee ; Vieveen, Jan W. ; Bons, J.H. ; Arnbak, Jens C.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
A derivation is given of the probabilities of the relative vectors which represent the approximating segments in a square coding ring for differential chain coding (DCC) of line drawings. These probabilities are required to calculate rate (coding efficiency) and distortion-versus-rate characteristics. The performances of the differential and nondifferential chain codes are compared. It is established that DCC has higher efficiency.<>
Keywords :
encoding; facsimile; picture processing; differential chain-coded line-drawings; facsimile; picture processing; probabilities; rate; relative vectors; square coding ring; Application software; Encoding; Probability; Quantization; Rate distortion theory; Sampling methods; Telecommunication traffic; Vectors;
Conference_Titel :
Communications, Computers and Signal Processing, 1989. Conference Proceeding., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC, Canada
DOI :
10.1109/PACRIM.1989.48324
