A new color image compression technique based on moment-preserving and block truncation coding (BTC) is proposed. An input image is divided into non-overlapping blocks. And each block is coded by two representative colors, or equivalently, by two sets of tristimulus values (R/sub 1/, G/sub 1/, B/sub 1/) and (R/sub 2/, G/sub 2/, B/sub 2/). To compute the two representative colors of each block, some color moments of the block are preserved, and the two sets of desired tristimulus values are computed accordingly using analytic formulas. The compression ratio is 6 when the block size is 4/spl times/4. Furthermore, a simple method is applied to quantize the bit map into 64 predefined bit maps and requantize each color component from 8 bits into 4 bits. An average compression ratio of 14.00 can be achieved.<>


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Color image compression by moment-preserving and block truncation coding techniques


    Contributors:


    Publication date :

    1994-01-01


    Size :

    533952 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Color Image Compression by Moment-Preserving and Block Truncation Coding Techniques

    Yang, C.-K. / Lin, J.-C. / Tsai, W.-H. et al. | British Library Conference Proceedings | 1994



    Joint image coding and image authentication based on absolute moment block truncation coding

    Hu, Y.-C. / Lo, C.-C. / Chen, W.-L. et al. | British Library Online Contents | 2013


    Feature Preserving Image Compression: A Survey

    Vergara Villegas, Osslan / Elias, Raul / Cruz Sanchez, Vianey | IEEE | 2006


    A Hybrid Image Compression Scheme using Block-Based Fractal Coding and DCT

    Farhadi, G. / IEEE / EURASIP | British Library Conference Proceedings | 2003