By Topic

Up-sampling of YCbCr4:2:0 image exploiting inter-color correlation in RGB domain

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Itoh, Y. ; Software Lab., Texas Instrum. Japan, Tsukuba, Japan ; Ono, T.

This paper introduces a practical inter-color up-sampling algorithm for images with decimated chrominance components. Most of the existing and emerging image and video compression coding standards such as JPEG, MPEG and H.26x families employ YCbCr4:2:0 chrominance format. After reconstructing the YCbCr4:2:0 image at a decoder, one must up-sample the decoded chrominance signals by a factor of two in both horizontal and vertical directions to generate the YCbCr4:4:4 format image, which is eventually transformed to RGB color space especially for displaying the reconstructed image. Then, we focus on generating high-fidelity RGB image, (but not an intermediate YCbCr image), and propose an innovative up-sampling algorithm that exploits the RGB inter-channel correlation. This is based on the fact that the RGB inter-channel correlation is usually higher than the YCbCr inter-channel correlation. The simulation results show that the proposed method outperforms the state-of-the-art method and a bi-linear method with regard to the objective quality measures. In addition, the proposed algorithm is less expensive than the state-of-the-art technology in terms of the resource requirements.

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:55 ,  Issue: 4 )