Title :
United coding for compound image compression
Author :
Wang, Shuhui ; Lin, Tao
Author_Institution :
VLSI Lab., Tongji Univ., Shanghai, China
Abstract :
This paper proposes a compound image compression method named United Coding (UC). In this coding method, several lossless coding techniques such as run-length encoding (RLE), Portable Network Graphics (PNG) and gzip are combined into H.264 hybrid coding, and macroblock is the basic coding unit. All coders in UC are used to code each macroblock, and rate-distortion (R-D) optimization criterion is applied to select the optimum coder. Experimental results show that compared to H.264, UC achieves 2dB~34dB PSNR improvement and better visual image quality for compound image with mixed text, graphics and picture. Moreover, UC also has a partial-lossless (defined as partially lossless and partially near-lossless) compression performance.
Keywords :
data compression; image coding; H.264 hybrid coding; compound image compression; gzip; lossless coding techniques; partial-lossless compression; partially lossless compression; partially near-lossless compression; portable network graphics; rate-distortion optimization criterion; run-length encoding; united coding; visual image quality; Compounds; Decoding; Dictionaries; Encoding; Graphics; Image coding; Optimization; H.264 hybrid coding; United Coding; compound image; partial-lossless;
Conference_Titel :
Image and Signal Processing (CISP), 2010 3rd International Congress on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6513-2
DOI :
10.1109/CISP.2010.5647270
