RD-OPT: an efficient algorithm for optimizing DCT quantization tables

The Discrete Cosine Transform (DCT) is widely used in lossy image and video compression schemes such as JPEG and MPEG. In this paper we describe RD-OPT, an efficient algorithm for constructing DCT quantization tables with optimal rate-distortion tradeoffs for a given image. The algorithm uses DCT co...

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Bibliographische Detailangaben

Hauptverfasser:	Viresh Ratnakar, Livny, M.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Design optimization Discrete cosine transforms Discrete transforms Frequency Image coding PSNR Quantization Rate-distortion Transform coding Video compression
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