Java 网格信息系统

MapX+VC开发源码

GIS数据的读取源码！尤其包括了对DWG文件的读取的代码！-GIS data source to read! Including, in particular, on the DWG file to read the code!

Delphi版本mapobject的legend控件源代码-version of the source code control legend

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

要使用web 开发GIS的，可以看看，很有帮助的-To use the web development of GIS, you can see, very helpful

就纸质地图等高线计算机自动提取展开讨论，结合计算机图形学、图像处理和模式识别等理论，提出了一套基于VC++开发平台的 具体实现算法。实验表明该方法获得了比较满意的提取效果，可以在GIS和军用仿真领域中进行推广。-on paper maps, contour lines from the computer automatically begun discussions with computer graphics, image processing and pattern recognition theory, a VC-based development platform to the specific algorithm. Experiments show that the method was quite satisfied with the extraction, the GIS and military simulation area for the promotion.

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

讲解GIS空间数据水印信息隐藏与加密技术方法的论文，对编写GIS矢量数据的数字水印程序有一定帮助-GIS Spatial Data on the watermark and encryption techniques to hide the paper, the preparation of GIS vector data of digital watermarking procedure has a certain extent, help

鹰眼实现(vb+mapx50)-breath-5, a program file to show that I will be my last set of five procedures is described.

开发GIS时，实现查询目标和目标闪烁的功能-GIS Development, the realization of the goals and objectives of inquiries flashing function