Title :
Optimum transform coding of imagery
Author :
Abousleman, Glen P.
Author_Institution :
Syst. Solutions Group, Motorola Inc., Scottsdale, AZ, USA
Abstract :
A system is presented for transform coding of imagery. Specifically, the system uses the 2-D discrete cosine transform (DCT) in conjunction with adaptive classification, entropy-constrained trellis-coded quantization, optimal rate allocation, and adaptive arithmetic encoding. Adaptive classification, side rate reduction, and rate allocation strategies are discussed. Entropy-constrained codebooks are designed using a modified version of the generalized Lloyd algorithm. This entropy-constrained DCT-based system is shown to achieve outstanding coding performance as compared to other DCT-based systems
Keywords :
adaptive codes; arithmetic codes; data compression; discrete cosine transforms; entropy; image classification; image coding; optimisation; quantisation (signal); transform coding; trellis codes; 2D DCT; 2D discrete cosine transform; adaptive arithmetic encoding; adaptive classification; coding performance; entropy-constrained DCT-based system; entropy-constrained codebooks; entropy-constrained trellis-coded quantization; image coding; modified generalized Lloyd algorithm; optimal rate allocation; optimum transform coding; side rate reduction; Algorithm design and analysis; Arithmetic; Books; Discrete cosine transforms; Encoding; Entropy; Image coding; Image generation; Quantization; Transform coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.757523
