Title :
Noise reduction of image sequences as preprocessing for MPEG2 encoding
Author :
van Roosmalen, P.M.B. ; Kokaram, A.C. ; Biemond, J.
Author_Institution :
Inf. & Commun. Theor. Group, Delft Univ. of Technol., Delft, Netherlands
Abstract :
This paper investigates the influence of three classes of noise reduction filters as preprocessors to MPEG2 coding of noisy image sequences. From each class we select a representative noise filter that performs well and we investigate the effects of these on the coding efficiency. We also investigate the use of an adjusted MPEG2 compression scheme for simultaneous noise reduction and compression. The quality of the filtered sequences are evaluated objectively and subjectively after MPEG2 coding at bitrates varying from 1.0to6.5Mbit/s.
Keywords :
image coding; image filtering; image representation; image sequences; MPEG2 compression scheme; MPEG2 encoding; image sequence noise reduction; noise reduction filters; representative noise filter; Bit rate; Noise measurement; PSNR; Transform coding; Wiener filters;
Conference_Titel :
Signal Processing Conference (EUSIPCO 1998), 9th European
Conference_Location :
Rhodes
Print_ISBN :
978-960-7620-06-4
