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Colorization in YCbCr color space and its application to JPEG images

โœ Scribed by Hideki Noda; Michiharu Niimi

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
670 KB
Volume
40
Category
Article
ISSN
0031-3203

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โœฆ Synopsis

This paper presents a colorization method in YCbCr color space, which is based on the maximum a posteriori estimation of a color image given a monochrome image as is our previous method in RGB color space. The presented method in YCbCr space is much simpler than that in RGB space and requires much less computation time, while both methods in YCbCr and RGB space produce color images with comparable PSNR values. The proposed colorization in YCbCr is applied to JPEG compressed color images aiming at better recovery of downsampled chrominance planes. Experimental results show that colorization in YCbCr is usually effective for quality improvement of JPEG color images.

๐Ÿ“œ SIMILAR VOLUMES

Lattice Algorithms for Compression Color
Lattice Algorithms for Compression Color Space Estimation in JPEG Images
โœ Ramesh Neelamani; Ricardo de Queiroz; Richard Baraniuk ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 166 KB

JPEG (Joint Photographic Experts Group) is an international standard to compress and store digital color images [5]. Given a color image that was previously JPEG-compressed in some hidden color space, we aim to estimate this unknown compression color space from the image. This knowledge is potential