Title :
MPEG-2/H.264 Transcoding with Vector Conversion Reducing Re-Quantization Noise
Author :
Yoshitome, Takeshi ; Kamikura, Kazuto ; Makino, Shoji ; Kitawaki, Nobuhiko
Author_Institution :
NTT Cyber Space Labs., NTT Corp., Yokosuka, Japan
Abstract :
We propose an MPEG-2 to H.264 transcoding method for interlace streams intermingled with frame and field macroblocks. This method uses the encoding information from an MPEG-2 stream and keeps as many DCT coefficients of the original MPEG-2 bitstream as possible. Experimental results show that the proposed method improves PSNR by about 0.190.31 dB compared with a conventional method.
Keywords :
discrete Fourier transforms; image coding; transcoding; vector quantisation; DCT coefficients; MPEG-2 bitstream; MPEG-2/H.264 transcoding; PSNR; encoding information; interlace streams; re-quantization noise; vector conversion; Discrete cosine transforms; Noise; Pixel; Quantization; Transcoding; Transform coding;
Conference_Titel :
Computer Communications and Networks (ICCCN), 2010 Proceedings of 19th International Conference on
Conference_Location :
Zurich
Print_ISBN :
978-1-4244-7114-0
DOI :
10.1109/ICCCN.2010.5560052
