Title :
Optimum DCT quantization
Author :
Monro, D.M. ; Sherlock, B.G.
Author_Institution :
Sch. of Electron. & Electr. Eng., Bath Univ., UK
Abstract :
The paper offers a solution to the problem of determining good quantization tables for use with the discrete cosine transform. Using the methods proposed, the designer of a system can choose a selection of test images and a coefficient weighting scenario, from which a quantization table can be produced, optimized for the choices made. The method is based on simulated annealing searches which the space of quantization tables to minimize some chosen measure
Keywords :
data compression; discrete cosine transforms; image coding; search problems; simulated annealing; DCT; coefficient weighting; discrete cosine transform; image coding; quantization tables; simulated annealing; test images; Degradation; Discrete cosine transforms; Educational institutions; Frequency; ISO standards; Image coding; Psychology; Quantization; Telephony; Transform coding;
Conference_Titel :
Data Compression Conference, 1993. DCC '93.
Conference_Location :
Snowbird, UT
Print_ISBN :
0-8186-3392-1
DOI :
10.1109/DCC.1993.253131
