Title :
Application of inhomogeneous diffusion to image and video coding
Author_Institution :
CIPIC, California Univ., Davis, CA, USA
Abstract :
We describe the properties of algorithms based on methods of inhomogeneous diffusion and their application to image and video coding. Filtering by inhomogeneous diffusion has the desirable property of reducing noise and other artifacts while preserving the image structure, maintaining or improving image quality. As a preprocessor, this filtering removes non-perceptible noise, leading to improved compression. As a postprocessor, it suppresses coding artifacts, such as the block impairments of DCT-based coders. Maintaining the basic structure of JPEG, MPEG, and other coders, we describe the improvements possible with inhomogeneous diffusion preprocessing and postprocessing.
Keywords :
data compression; discrete cosine transforms; filtering theory; image coding; transform coding; video coding; DCT based coders; JPEG; MPEG; algorithms; block impairments; coding artifacts suppression; filtering; image coding; image compression; image quality; image structure; inhomogeneous diffusion; noise reduction; nonperceptible noise removal; postprocessing; preprocessor; video coding; Filtering algorithms; Image coding; Image processing; Image quality; Noise reduction; PSNR; Rough surfaces; Surface roughness; Transform coding; Video coding;
Conference_Titel :
Signals, Systems and Computers, 1996. Conference Record of the Thirtieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-7646-9
DOI :
10.1109/ACSSC.1996.599080