Год выпуска: 2011 Автор: Gulistan Raja Издательство: LAP Lambert Academic Publishing Страниц: 144 ISBN: 9783845440910
Описание
Today’s most video coding standards use block based discrete cosine transform coding schemes to exploit spatial redundancy. The approach is: partitioning of the whole image into blocks, transformation and quantization. Loss of correlation occurs between adjacent blocks due to coarse quantization at low bit rates, causes visually disturbing block discontinuities along block edges, known as blocking artifacts. The latest H.264/AVC video coding standard employs normative adaptive loop deblocking filter algorithm for reduction of blocking artifacts. Performance analysis of deblocking filter proves its effectiveness for suppression of artifacts. However, it is highly computationally complex. This book reviews some salient algorithms for suppression of blocking artifacts and presents an optimized method based on motion activity of video sequences for reduction of blocking artifacts. This book provides basic understanding of occurrence of blocking artifacts, various deblocking methods and...
