Local prediction based adaptive scanning for JPEG and H.264/AVC intra coding
Journal
2013 IEEE International Conference on Image Processing, ICIP 2013 - Proceedings
Pages
1636-1640
Date Issued
2013
Author(s)
Abstract
In this paper, a new adaptive scanning scheme, which is called local prediction based adaptive scanning (LPBAS), is proposed for discrete cosine transform (DCT) based image compression techniques including JPEG and H.264/AVC intra coding. The conventional zigzag scan order is widely used in image and video coding standards, but it ignores the statistical properties of DCT blocks and has limited performance. In this paper, the LPBAS scheme is proposed to achieve the entropy coding gain, where the scan order patterns are adaptively generated and updated based on the statistics of local neighboring DCT blocks. The proposed scheme improves the efficiency of the two image coding systems, JPEG and the H.264/AVC intra coding system. Simulation results showed that the proposed scheme indeed outperforms the zigzag scanning method and other existing adaptive scanning methods. © 2013 IEEE.
Subjects
Adaptive scanning; compression algorithms; data compression; intra prediction; JPEG
Other Subjects
Data compression; Discrete cosine transforms; Forecasting; Image coding; Image enhancement; Motion Picture Experts Group standards; Scanning; Signal encoding; Video signal processing; Adaptive scanning; Compression algorithms; Discrete Cosine Transform(DCT); Image and video coding; Image compression techniques; Intra Prediction; JPEG; Statistical properties; Image compression
Type
conference paper