Half-Pixel correction for MPEG-2/H.264 transcoding

Authors:
Soon-young Kwon;Joo-kyong Lee;Ki-dong Chung
Affiliations:
Dept. Of Computer Engineering, Pusan National University, Busan, Korea;Dept. Of Computer Engineering, Pusan National University, Busan, Korea;Dept. Of Computer Engineering, Pusan National University, Busan, Korea
Venue:
ICIAP'05 Proceedings of the 13th international conference on Image Analysis and Processing
Year:
2005

Citing 2
Cited 0

A novel DCT domain transcoder for transcoding video streams with half-pixel motion vectors

Real-Time Imaging
Overview of the H.264/AVC video coding standard

IEEE Transactions on Circuits and Systems for Video Technology

Quantified Score

Hi-index	0.00

Visualization

Abstract

To improve video quality and coding efficiency, H.264/AVC [1] has adopted several newer coding tools such as a 4×4 integer DCT and a method for calculating half pixels than the previous standards. However, these tools require additional work to transcode video content for pre-coded in the previous standards to H.264/AVC in the DCT domain. In this paper, we propose, as far as we know, the first half-pixel correction method for MPEG-2 to H.264 transcoding in the DCT domain. In the proposed method, an MPEG-2 block is added to the correction block obtained from the difference between half-pixel values of the two standards using a DCT reference frame. Experimental results show that the proposed method achieves better quality than the pixel based transcoding method.