Color Image Compression Algorithm Based on the DCT Blocks
This paper presents the performance of different block-based
discrete cosine transform (DCT) algorithms for compressing
color image. In this RGB component of color image are
converted to YCbCr before DCT transform is applied. Y is
luminance component; Cb and Cr are chrominance components
of the image. The modification of the image data is done based
on the classification of image blocks to edge blocks and nonedge
blocks, then the edge block of the image is compressed with
low compression and the non-edge blocks is compressed with
high compression. The analysis results have indicated that the
performance of the suggested method is much better, where the
constructed images are less distorted and compressed with higher
factor.
Keywords: Color Image Compression, Edge Detection, DCT, YCbCr Color Model, JPEG.
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ABOUT THE AUTHORS
Walaa M. Abd-Elhafiez
Mathematical Department, Faculty of Science, Sohag University Sohag, 82524, Egypt
Wajeb Gharibi
College of Computer Science & Information Systems,Jazan University Jazan, Kingdom of Saudi Arabia
Walaa M. Abd-Elhafiez
Mathematical Department, Faculty of Science, Sohag University Sohag, 82524, Egypt
Wajeb Gharibi
College of Computer Science & Information Systems,Jazan University Jazan, Kingdom of Saudi Arabia
