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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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space index, and helpful, can learn from
空间索引,,,很有帮助,可以学习学习
-space index, and helpful, can learn from
- 2022-03-19 18:14:23下载
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地理信息系统-组件开发篇所有例程。书中对各章的实例都进行了编码,读者可根据编码在光盘中找到对应的实例代码。要运行这些应用程序,必须先安装MapObjects与M
地理信息系统-组件开发篇所有例程。书中对各章的实例都进行了编码,读者可根据编码在光盘中找到对应的实例代码。要运行这些应用程序,必须先安装MapObjects与MapX两个组件,而无须其他软件。- Geographic information system- module development all examples
regulation. In the book all carried on the code to each chapter of
example, the reader has been possible to act according to codes found
corresponding in the compact disc the example code. Must move these
application procedures, must first install MapObjects and the MapX two
modules, but does not need other software.
- 2022-03-17 21:56:16下载
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code ~ mapxtreme2005 beginner can easily understand map loading process, and the...
mapxtreme2005初学代码~
很容易明白地图加载过程,及简单工具应用-code ~ mapxtreme2005 beginner can easily understand map loading process, and the application of simple tools
- 2022-05-24 14:49:21下载
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程序演示了vc下读取mapInfo数据的功能,。包括.mif和.mid和.tab.
程序演示了vc下读取mapInfo数据的功能,。包括.mif和.mid和.tab.-Procedures demonstrated vc MapInfo data under the read function. Including. Mif and. Mid and the. Tab.
- 2022-08-14 21:00:16下载
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Jinan, Shandong Province, in 2009 the latest vector map (MapInfo format)
山东省济南09年最新矢量地图(MapInfo格式)-Jinan, Shandong Province, in 2009 the latest vector map (MapInfo format)
- 2022-09-27 19:25:04下载
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尺度参数2 ESP2估计
这个工具可以直接在eCognition软件使用。你可以用它来评估一个合适的规模在多层图像分割。 在此期间,可以发现新的工具,以及在参考的文件在相同的地址(ESP2),这已被公布的改进版本由Drǎgut等,并且它能够在多个层上自动工作。
- 2022-02-11 21:12:18下载
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一点到一直线的距离计算,各种情况都考虑进去了
一点到一直线的距离计算,各种情况都考虑进去了--GIS-1:00 of the distance has been calculated, all the circumstances are taken into account-- GIS
- 2022-02-21 20:15:16下载
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公交查询系统 用c++编写的! 大家下载吧
公交查询系统 用c++编写的! 大家下载吧-Bus Inquiry System using c++ Prepared! Everyone to download it
- 2022-01-22 00:14:22下载
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Traffic GIS collection, this is my online to find some, and then combine some of...
交通GIS论文集,这是我在网上找的一些,再结合自己的一些东西,如果做交通行业的GIS,这是很好的参考资料.安装CAJ才能阅读-Traffic GIS collection, this is my online to find some, and then combine some of their own things, if the transport industry to do GIS, this is a very good reference. CAJ installed in order to read
- 2022-05-30 07:50:13下载
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