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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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vb+mapobject实现地图匹配 并重写回数据库
vb+mapobject实现地图匹配 并重写回数据库-MapMatching Program by Vb+Mapobjects
- 2022-07-26 11:55:32下载
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MapBasic程序、旅游地理信息系统
MapBasic程序,实现旅游地理信息查询系统-MapBasic procedures, the tourism Geographic Information System
- 2022-07-18 06:46:31下载
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该源代码用于伪Linux/Unix系统简历地理信息系统(GIS).该代码支持矢量格式和光栅格式...
该源代码用于伪Linux/Unix系统简历地理信息系统(GIS).该代码支持矢量格式和光栅格式-the source code for the pseudo-Linux/Unix systems curriculum vitae Geographic Information System (GIS). The code format support vector and raster format
- 2022-01-25 15:00:51下载
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gdal foreign open
gdal国外开源的东西,希望大家都来学习一下。特别是搞gis的-gdal foreign open-source things, we want everyone to learn about. In particular, to engage in gis
- 2023-05-26 04:50:04下载
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using MapX in vc MapInfo achieve some of the functions available for beginners t...
用mapx在vc++下实现一些mapinfo的功能..可供初学者学习-using MapX in vc MapInfo achieve some of the functions available for beginners to learn ..
- 2022-05-08 12:43:57下载
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图形地理信息数据与图形不需要任何ArGis支持处理处理处理处理处理处理...
图形地理信息数据与图形不需要任何ArGis支持处理处理处理处理处理处理-graphics GIS data and graphics do not need to deal with any ArGis on Treatment handle on Treatment
- 2022-06-28 03:46:24下载
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打开
OPEN-GL地图-OPEN-GL Map
- 2022-06-14 03:10:08下载
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Forum message using FCK editor, can be set for the required functional blocks.
论坛留言用的FCK编辑器,可以自己设定所需要的功能模块。-Forum message using FCK editor, can be set for the required functional blocks.
- 2022-09-03 07:50:03下载
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范在SuperMap Objects 中如何编辑手柄控制功能
范在SuperMap Objects 中如何编辑手柄控制功能-Fan SuperMap Objects How to handle control functions Edit
- 2023-05-02 02:45:02下载
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