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本文结合DCT变换的特性,利用分形的Peano一hilbert扫描曲线,对基于DCT变换的图像编码方法进行了研究,并提出了改进方法。主要工作分为两个部分: 一是...
本文结合DCT变换的特性,利用分形的Peano一hilbert扫描曲线,对基于DCT变换的图像编码方法进行了研究,并提出了改进方法。主要工作分为两个部分: 一是在分块DCT基础上的改进。对分块后生成的各图像块矩阵,不直接作二维DCT变换,而是先进行扫描,使之重排成一维向量,再进行一维DCT变换,这样可以减少运算量。 其次是对层次余弦变换编码部分的改进。使用层次DCT变换与零树编码相结合的方法,并在扫描编码过程中,按Peano一hilbert扫描顺序进行编码。这样不仅可以减少“块效应”,而且可以加快编码速度。-this paper the characteristics of DCT, using fractal Peano a Hilbert scanning curve, the DCT-based image coding method for the study and improvement of methods. The work is divided into two main parts : First, the DCT block on the basis of improvements. Right after block production of the image block matrix, not for direct two-dimensional DCT, but first scan, so they line up in a heavy-dimensional vector and then a peacekeeping DCT, thus reducing the amount of computation. Secondly, the level of cosine transform coding some of the improvements. The use level of DCT and zero tree coding combination of methods, coding and scanning process, according to a Hilbert Peano code scanning sequence. This will not only reduce the "blocking
- 2022-07-20 17:37:33下载
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最短路经算法示例(需要mo2.1和vb)
最短路经算法示例(需要mo2.1和vb)-shortest pass algorithm examples (and need mo2.1 vb)
- 2022-03-02 06:57:58下载
- 积分:1
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MapX与数据库的链接实现源码
MapX与数据库的链接实现源码-MapX and database links to achieve FOSS
- 2022-08-19 13:43:02下载
- 积分:1
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四川09年最新矢量地图(MapInfo格式)
四川09年最新矢量地图(MapInfo格式)-sichuan vector maps like map (MapInfo format)
- 2023-04-04 17:55:03下载
- 积分:1
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mapgis二次开发sdk,实例程序,有部分vb程序,献给mapgis二次开发的朋友。...
mapgis二次开发sdk,实例程序,有部分vb程序,献给mapgis二次开发的朋友。-mapgis secondary development sdk, examples of procedures, some vb procedures, mapgis dedicated secondary development of a friend.
- 2022-02-24 16:03:47下载
- 积分:1
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MapObject Jave Applet源码
MapObject Jave Applet源码-MapObject Java Applet FOSS
- 2022-10-06 16:25:03下载
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ArcGIS General GIS component for the introduction of printing, but this function...
ArcGIS中一般为采用GIS的组件打印,但本方法直接通过系统函数打印出来,方便-ArcGIS General GIS component for the introduction of printing, but this function directly through the system print out Convenience
- 2022-09-13 17:00:03下载
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基于VB和MapObjects教程教程实例代码。
mapobjects教程基于vb的教程及其代码示例。-mapobjects tutorial tutorials vb based and code examples.
- 2022-02-15 14:54:40下载
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GIS的相关资料
GIS的相关资料-GIS information
- 2022-07-12 06:58:31下载
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使用arcgis开发的两个小程序。分别基于AO和MO的小程序,使用了上海浦东(局部)地图。...
使用arcgis开发的两个小程序。分别基于AO和MO的小程序,使用了上海浦东(局部)地图。-ARCGIS development of the use of two small programs. Based on the MO AO and the small, the use of the Shanghai Pudong (partial) maps.
- 2022-04-07 06:44:14下载
- 积分:1