Title :
Motion-compensated temporal filtering for denoising in video encoder
Author :
Song, B.C. ; Chun, K.W.
Author_Institution :
Digital Media R&D Center, Samsung Electron. Co., Suwon, South Korea
fDate :
6/24/2004 12:00:00 AM
Abstract :
A DCT-domain temporal filtering in a video encoder is presented. It is proven that the multiplication of every DCT coefficient in an inter block with a proper weight is equivalent to motion-compensated temporal filtering in the spatial domain for the inter block. Thus, a temporal filtering in the DCT-domain is proposed, which determines properly the weight by using an effective noise estimation scheme.
Keywords :
discrete cosine transforms; filtering theory; image denoising; motion compensation; transform coding; video coding; DCT spatial domain temporal filtering; denoising; motion compensated temporal filtering; noise estimation scheme; video encoder;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040550
