| 彩色图像信号的非均匀采样和重构 |
| |
| 引用本文： | 朱学芳.彩色图像信号的非均匀采样和重构[J].现代图书情报技术,2003,35(3):67-69,72. |
| |
| 作者姓名： | 朱学芳 |
| |
| 作者单位： | 南京大学信息管理系、多媒体信息处理研究所,南京,210093 |
| |
| 摘 要： | 计算机图像处理技术的发展，加速了情报学对图像／视频等较大信息量的快速存储、检索、应用。本文讨论将彩色数字图像信号按一定的规则分割成相同大小的子块，对其进行非均匀降速采样的过程，重采样频率的自动确定、选择原则，重构信号的质量、数据量与子块的尺寸等问题，并以实际的彩色数字图像文件全部用VC 6．0编程实现非均匀降速采样和Hermite插值重构；以实验数据得出了一些有益的结论，并进行了分析讨论。分析方法、实现程序不仅彩色数字图像文件有效，对视频信号也有效的。
|
| 关 键 词： | 计算机图像处理技术 彩色数字图像信号 非均匀降速采样 重采样 |
Resampling and Recovery of Digital Color Images |
| |
| Zhu Xuefang.Resampling and Recovery of Digital Color Images[J].New Technology of Library and Information Service,2003,35(3):67-69,72. |
| |
| Authors: | Zhu Xuefang |
| |
| Abstract: | Non uniform re sampling and recovery of digital color images stored in BMP format are discussed in the paper. In the re sampling, digital color image are equivalently segmented and then different re sampling frequency, which is automatically determined by using Discrete fast Fourier transform(FFT), is used according to frequency characteristic of each sub region and each color. Experiments and analyses show that recovery quantity and quality is affected by re sampling frequency, energy error, sub region size, etc. Conclusions drawn from comparing the effects are useful to selection of some parameters. The proposed methods and procedures are not only effective to digital colour image signalst, it is useful to digital videos also. |
| |
| Keywords: | Digital color image Non uniform sampling Re sampling Recovery Interpolation Video |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
