Title :
A DWT-based perceptually lossless color image compression architecture
Author :
Marino, Francescomaria ; Acharya, Tinku ; Karam, Lina J.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., USA
Abstract :
In this paper we propose a DWT-based perceptually lossless image compression algorithm and architecture. Many image-capturing devices acquire images in subsampled R-G-B format and have real-time constraints which prohibit conversion to other formats, generally preferred for image compression, such as Y-Cb-Cr. Therefore, we propose a compression algorithm which works performed directly on the subsampled R-G-B data. The scheme exploits the correlation between the color planes and the perceptual sensitivity of the human visual system in order to improve the compression ratio. Moreover it can be easily mapped into an integrated fast architecture yielding very high throughput.
Keywords :
correlation methods; data compression; discrete wavelet transforms; image coding; image colour analysis; transform coding; visual perception; DWT-based perceptually lossless color image compression architecture; color planes; compression ratio improvement; correlation; discrete wavelet transform; human visual system; perceptual sensitivity; subsampled R-G-B format; Color; Decorrelation; Digital images; Discrete wavelet transforms; Filters; Humans; Image coding; Quantization; Table lookup; Visual system;
Conference_Titel :
Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-5148-7
DOI :
10.1109/ACSSC.1998.750844