Sharpness enhancement for MPEG-2 encoded/transcoded video sources

Author

Boroczyky, L. ; Janssen, Johan G W M

Author_Institution

Philips Res., Briarcliff Manor, NY, USA

Volume

2

fYear

2001

Firstpage

407

Abstract

We discuss a new sharpness enhancement algorithm that takes into account information that is present in MPEG encoded video. For emerging multimedia devices like storage products, PDA, Personal TV, etc., the traditional sharpness enhancement algorithms may perform sub-optimally on MPEG encoded or transcoded video, due to the different characteristics of their sources. The key to our solution is to optimally combine statistical information from the MPEG bitstream with slightly modified existing sharpness enhancement algorithms, in order to obtain an improved picture quality. Experimental results show an improvement in picture quality for MPEG encoded source material. Comparing the results to algorithms that do not use coding information is planned for our future work

Keywords

code standards; image enhancement; multimedia computing; optimisation; statistical analysis; video coding; MPEG-2 encoded video; MPEG-2 transcoded video; multimedia devices; optimization; picture quality; sharpness enhancement; statistical information; Bit rate; Computational complexity; Cost function; Decoding; Displays; Image enhancement; Internet; Iterative algorithms; Multimedia systems; Quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2001. Proceedings. 2001 International Conference on

Conference_Location

Thessaloniki

Print_ISBN

0-7803-6725-1

Type

conf

DOI

10.1109/ICIP.2001.958514

Filename

958514