mapgis dv ,this is vb program

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

SAGA GIS一个地理信息系统平台，用C＋＋编写，包含有常用的GIS算法，能打开E00文件和SHP格式文件-a geographic information system platform, C++, includes a list of useful GIS algorithm, can open the E00 and SHP file format

在VC中利用MAPX实现在地图中对图层的综合使用，代码为本人所编。-use of the VC Connection realization of the map layer in the integrated use, the code for my part.

应用vb语言，结合mapobjects控件，包含了gis的大部分基本功能-Application vb language, combined with mapobjects control, contains the basic functions of most of the gis

arcgis培训资料，对于想了解arcgis和即将进入arcgis领域的软件人员很有帮助-arcgis training materials, for arcgis and want to know is about to enter the field of software arcgis helpful staff

HillshadeCommand.rar。　三维阴影的计算机内部实现。 以DLL形式。-HillshadeCommand.rar. Three dimensional shadow computer interior realization. By DLL form.

Geomedia 的二次开发教程及试验代码，VB语言，不过通过升级能在VS2005下使用。-Geomedia the secondary development guidance and test code, VB language, But through escalation in the use VS2005.

自动度分秒转换度程序；GPS原始坐标加载；高程数据加载；高程自动拟合；

越野小车的驱动源码，希望和大家多多学习-Cross-country car driver source code, hope and everyone to learn more

在VC环境下，一个实现等高线转换为DEM数据的程序。-contour to DEM