基于空穴聚类抖动方法的改进型块截断编码。

Improved block truncation coding based on the void-and-cluster dithering approach.

作者信息

Guo Jing-Ming, Wu Ming-Feng

出版信息

IEEE Trans Image Process. 2009 Jan;18(1):211-3. doi: 10.1109/TIP.2008.2007385.

DOI:10.1109/TIP.2008.2007385

PMID:19095530

Abstract

Block Truncation Coding (BTC) is an efficient technology for image compression. An improved BTC algorithm, namely Ordered Dither Block Truncation Coding (ODBTC), is presented in this study. In order to provide better image quality, the void-and-cluster halftoning is combined with the BTC. The ODBTC results show that the image quality is improved when it is operated in high coding gain applications. Another feature of the ODBTC is the dither array Look Up Table (LUT), which significantly reduces the complexity compared to the BTC.

摘要

块截断编码（BTC）是一种高效的图像压缩技术。本研究提出了一种改进的BTC算法，即有序抖动块截断编码（ODBTC）。为了提供更好的图像质量，将空穴聚类半色调与BTC相结合。ODBTC的结果表明，在高编码增益应用中运行时，图像质量得到了改善。ODBTC的另一个特点是抖动阵列查找表（LUT），与BTC相比，它显著降低了复杂度。