Title :
A devised approach to optimize color space transformation for image compression
Author :
Imany, P. ; Yazdanpanah, Mina ; Miran, S. ; Showkatbakhsh, M.
Author_Institution :
Sch. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran
Abstract :
A significant step in color image compression is to apply a color space transformation to the original RGB image to concentrate most of its energy in one plane. Standard JPEG-based compression methods utilize predefined transformations like RGB to YCbCr. In this paper, a devised algorithm is proposed to optimize the transformation for each image. The algorithm iteratively increases the energy concentration by optimizing a novel cost function while limiting the matrix determinant to a bounded region.
Keywords :
data compression; image coding; image colour analysis; iterative methods; matrix algebra; JPEG-based compression methods; RGB image; YCbCr; color image compression; color space transformation; energy concentration; iterative algorithm; matrix determinant; novel cost function; predefined transformations; Databases; Educational institutions; Face; Image coding; Image color analysis; PSNR; Quantization; Color Image Compression; JPEG-based Image Compression; Optimization of Color Space Transformation; RGB to YCbCr;
Conference_Titel :
Telecommunications Forum (TELFOR), 2012 20th
Conference_Location :
Belgrade
Print_ISBN :
978-1-4673-2983-5
DOI :
10.1109/TELFOR.2012.6419563
