WSEAS Transactions on Computers
Print ISSN: 1109-2750, E-ISSN: 2224-2872
Volume 15, 2016
Lossy Compression in the Chroma Subsampling Process
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Abstract: Nowadays, compression algorithms are frequently used in the computer software field. The reason is the large amounts of data that is processed by applications. These compression algorithms, in different forms, are deployed in many raster image processing cases. The reasons for this are the quite high compression ratios and also, the usually high compression/decompression speed (the success of these two major parameters of the compression algorithms depends on the image information content). In addition, the images can often allow one to use lossy compression algorithms which cause a substantially greater reduction of the image data size. The JPEG graphic format is the most widely used. Here, the loss rate is determined in two ways by the subsampling color components and the quantization of the coefficients that are obtained by the Discrete Cosine Transform calculation. In this paper, attention is focused on the subsampling process of the color components. The content compares the most frequently used sampling techniques - mainly to the quality and size of the processed image.
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Pages: 76-82
WSEAS Transactions on Computers, ISSN / E-ISSN: 1109-2750 / 2224-2872, Volume 15, 2016, Art. #8