| 信道自适应主动块低频分量丢弃数字图像传输技术 |
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| 引用本文： | 王坚,张建州,贺忝.信道自适应主动块低频分量丢弃数字图像传输技术[J].计算机工程与应用,2004,40(21):60-62,78. |
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| 作者姓名： | 王坚 张建州 贺忝 |
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| 作者单位： | 四川大学计算机学院,成都,610065 |
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| 基金项目： | 国家自然科学基金项目(编号:60371024)资助 |
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| 摘 要： | 为减少图像传输的数据量,满足信道带宽的要求,在图像发送端以块为单位对图像进行划分,利用离散余弦变换(DCT),按照一定的规则主动丢弃部分块的低频分量,而在图像接收端通过图像重建技术对丢弃的图像数据进行恢复,从而再现原图像。实验结果表明这种数字图像传输技术改善了DCT图像质量。
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| 关 键 词： | 信道自适应 主动块低频分量丢弃 图像传输 |
| 文章编号： | 1002-8331-(2004)21-0060-03 |
Digital Image Transmission Technique Adapting to the Channel by Actively Discarding the Low-frequency Part of Some Image Blocks |
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| Wang Jian Zhang Jianzhou He Tian.Digital Image Transmission Technique Adapting to the Channel by Actively Discarding the Low-frequency Part of Some Image Blocks[J].Computer Engineering and Applications,2004,40(21):60-62,78. |
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| Authors: | Wang Jian Zhang Jianzhou He Tian |
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| Abstract: | At the transmitter,the image is divided into blocks.Theses blocks are transformed by DCT.The bit stream is reduced through discarding the low-frequency part of some Image Blocks according to the certain rule to meet the requirement of the channel.At the receiver,the original image is recovered by the reconstruction for the discarded low-frequency part of some Image Blocks.This digital image transmission technique improves the quality of DCT image. |
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| Keywords: | adapting to the channel actively discarding the low-frequency part of some Image Blocks image transmission |
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