A Color Image Compressio Using Pixel Correlation and Its Comparison with Existing Algorithms

ISSN: 2231-2803 http://www.internationaljournalssrg.org Page 120 Abstract Image compression is a widely addressed researched area. Many compression standards are in place. But still here there is a scope for high compression with quality reconstruction. The JPEG standard makes use of Discrete Cosine Transform (DCT) for compression. In this paper, it presents the new method use of DCT that is image compression using pixel correlation and its comparison with existing algorithms. Image reconstruction without any loss with high compression ratio has to be defined in this context. This algorithm is used only JPEG color images. In this R, G and B 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. It takes three different images in different size for comparison with the Huffman coding and Arithmetic Coding. Results are analyzed on the basis of compression ratio.