| 基于查找表的误差分散半调图像的混合压缩算法 |
| |
| 引用本文： | 耿烨,孔月萍,刘欣.基于查找表的误差分散半调图像的混合压缩算法[J].计算机应用,2011,31(5):1221-1223. |
| |
| 作者姓名： | 耿烨 孔月萍 刘欣 |
| |
| 作者单位： | 1.西安建筑科技大学 信息与控制工程学院,西安710055
2.西安建筑科技大学 网络中心,西安710055 |
| |
| 基金项目： | 陕西省自然科学基金，陕西省教育厅专项，西安建筑科技校青年科技基金 |
| |
| 摘 要： | 结合现有逆半调技术,针对无损压缩所得压缩率较低,而现有二值图像有损压缩算法对误差分散图像的压缩效果并不理想等缺陷,设计了一种针对误差分散半调图像的混合压缩算法。该算法采用LUT逆半调对误差分散半调图像进行灰度化重建,再通过改进离散余弦变换(DCT)系数量化法,以提高压缩率。实验证明该算法能获得较好的压缩效果和较高的压缩率。
|
| 关 键 词： | 数字半调图像 逆半调处理 离散余弦变换 |
| 收稿时间： | 2010-11-15 |
| 修稿时间： | 2011-01-10 |
Mixed compression algorithm for error-diffusion halftone image based on look-up table |
| |
| GENG Ye,KONG Yue-ping,LIU Xin.Mixed compression algorithm for error-diffusion halftone image based on look-up table[J].journal of Computer Applications,2011,31(5):1221-1223. |
| |
| Authors: | GENG Ye KONG Yue-ping LIU Xin |
| |
| Affiliation: | 1. School of Information and Control Engineering, Xi'an University of Architecture and Technology, Xi'an Shaanxi 710055, China
2. Network and Information Center, Xi'an University of Architecture and Technology, Xi'an Shaanxi 710055, China |
| |
| Abstract: | A mixed compression algorithm for error-diffusion image that could overcome the disadvantages of the conventional binary image loss coding techniques and combined with the inverse half toning method was proposed. Look-Up-Table (LUT) inverse half toning method was used to convert error-diffusion image back to the contone image, then an improved Discrete Cosine Transform (DCT) coding algorithm was constructed to get higher compression rate. The experimental results indicate that the proposed algorithm fits to the error-diffusion image, and the quality of the decoding image is well. |
| |
| Keywords: | digital halftone image inverse halftoning processing Discrete Cosine Transform (DCT) |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《计算机应用》浏览原始摘要信息 |
|
点击此处可从《计算机应用》下载全文 |
|
