In this paper , we propose a compression scheme with speckle noise reduction 本文中我们提出了一种结合相干斑抑制的高效的压缩合成孔径雷达图像整体方案。
Vector quantization ( vq ) is a popular lossy compression scheme widely used in multimedia data compressions 矢量量化是一种常用有损压缩技术,被广泛地应用于多媒体数据压缩。
We study compression of document image , and propose a region segmentation based document image compression scheme .对文档图像的压缩问题进行了研究,提出了一种基于区域分割的文档图像压缩方法。
Compared with the existing header compression scheme , rfc3095 ( rohc ) has the highest compression efficiency and the best robustness and is suitable for wireless links 在现有的头部压缩协议中,以rfc3095 ( rohc )压缩效率和健壮性最高,最适合于无线链路的使用。
Essentially , compression schemes and vision systems face a similar problem , that is , how to represent visual object in ways that are efficient and effective 从本质上来说,压缩机制和视觉系统面临着一个相似问题,即,怎样以一种高效率和有效的方式来描述视觉对象。
Experiment results show that in low bit rate environment , the new image compression scheme performs better than jpeg in the aspects of perception and psnr ( peak signal noise ratio ) 实验结果表明该算法在低码率下,相比jpeg ,获得了在视觉效果和峰值信噪比方面更好的恢复图像质量。
The main methods include removing noise from background and reinforcing the text . second , this paper presents an image compression scheme based on roi ( region of interest ) 第二,提出了一种基于兴趣域的扫描文档图像的压缩与处理方法,在压缩之前先对图像进行分割,将一幅图像分成两个层:文本层和插图层。
The three schemes are simulated and compared with others . with the 8 : 1 compression rate , experimental results show that these two compression schemes can both meet the basic requirements of compressing hyperspectral images 仿真结果表明,在进行8 : 1压缩条件下,这三种压缩方案都能较好的满足高光谱图像压缩的要求。
The compression techniques are a proprietary image compression scheme , a jpeg implementation and a proprietary video compressor for digitized video data ( leading to a compression ratio of 8 : 1 , and if temporal redundancies are also removed , to a ratio of 25 : 1 ) 压缩技术包括一种专门的图像压缩方案, jpeg实现和一种专门针对数字化视频数据的视频压缩器(压缩比可达8 1 ,如果去掉时间冗余,比率可达25 1 )
The motion - based layered compression scheme in this dissertation is different from the traditional full picture - process method , using different encoding strategy by classify marcoblock in temporal motion , a high encoding efficiency is achieved in experiment 本文提出的基于运动的分级压缩算法,打破了以往时空伸缩全帧处理的概念,实验中以块为单位按时间频率分等级,分别采用不同的编码策略,达到较好的编码效率。