An efficient BTC image compression algorithm with visual patterns

作     者：陆哲明 潘正祥 孙圣和 

作者机构：LU Zhe-ming (Dept. of Automatic Test and Control Harbin Institute of Technology Harbin 150001 China) SUN Sheng-he (Dept. of Electronic Engineering Kaohsiung Institute of Technology Taiwan) 

出 版 物：《Journal of Harbin Institute of Technology(New Series)》 (哈尔滨工业大学学报（英文版）)

年 卷 期：2000年第7卷第3期

页      面：62-65页

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

主　　题：Block truncation coding visual patterns image compression 

摘      要：Discusses block truncation coding (BTC) a simple and fast image compression technique suitable for real time image transmission with high channel error resisting capability and good reconstructed image quality, and its main drawback of high bit rate of 2 bits/pixel for a 256 gray image for the purpose of reducing the bit rate, and introduces a simple look up table method for coding the higher mean and the lower mean of a block, and a set of 24 visual patterns used to encode 4×4 bit plane of the high detail block and proposes a new algorithm, when needs only 19 bits to encode 4×4 high detail block and 12 bits to encode the 4×4 low detail block.