Transcoder with arbitrarily resizing capability

Author

Shen, Guobin ; Zeng, Bing ; Zhang, Ya-Qin ; Liou, Ming L.

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., China

Volume

5

fYear

2001

fDate

2001

Firstpage

25

Abstract

This paper presents a transcoding technique that possesses the capability of arbitrarily resizing. Arbitrarily resizing is necessary when the resolution of an end display device differs from that of the video being pre-encoded. It is also a good strategy to achieve better visual quality when the transmission bandwidth is limited. The two key steps for a superior transcoding are the resizing and the coding steps. The resizing is achieved through an upsampling-filtering-downsampling process. Several motion vector reuse strategies that the specially tailored for the transcoder with arbitrarily resizing capability are presented. Experimental results confirm that the resizing can yield better visual quality

Keywords

motion estimation; video coding; arbitrarily resizing capability; coding step; motion vector reuse strategies; transcoding technique; upsampling-filtering-downsampling process; visual quality improvement; Bandwidth; Bit rate; Decoding; Displays; Feedback; Internet; Quality of service; Streaming media; Transcoding; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.921975

Filename

921975