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

fYear

2012

fDate

20-22 Nov. 2012

Firstpage

1737

Lastpage

1740

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Forum (TELFOR), 2012 20th

Conference_Location

Belgrade

Print_ISBN

978-1-4673-2983-5

Type

conf

DOI

10.1109/TELFOR.2012.6419563

Filename

6419563