我们不能提供的矢量地图，在这个时候或序列。
数字矢量地图的地理信息详实准确，具有巨大的经济价值和战略意义。
Digital vector map has great economical value and strategy significance for its accurate content.
数字矢量地图水印技术是一种解决数字矢量地图版权保护问题的常用手段。
Digital watermarking technology is a common scheme to secure the copyright of digital vector map.
综合运用上述方法可使得矢量地图冗余小、数据量小，满足嵌入式平台特性。
Using stated ideas together to process vector map will cause little redundance and smaller quantity, satisfying embedded hardware studio.
满足功能并对矢量地图数据进行高效压缩，是嵌入式GIS系统的基本要求。
Efficiently compressing vector map data is the basic requirement of an embedded GIS.
利用差分平移和差分扩张，提出一种新的应用于数字矢量地图的可逆水印算法。
Based on the difference expansion and difference shifting, a novel reversible watermarking algorithm for digital vector map is proposed.
重点就地物目标拓扑构造和GIS矢量地图与遥感图像互操作问题进行了讨论。
Both geographical objects topology construction and mutual operation between GIS vector map and remote sensing images are mainly discussed.
提出一种基于差值直方图的可逆数据隐藏算法，用于矢量地图的认证和隐秘通信。
A difference histogram-based reversible data hiding algorithm was proposed for authentication and covert communications of vector maps.
接着总结了矢量地图数据证数字水印技术的研究，以及矢量地图完整性认证方法的研究。
Then this thesis summed up the research on digital watermarking technology used to protect vector maps, as well as the research on authenticating the integrity of vector maps.
最终系统实现了电子矢量地图绘制与无级缩放功能，目标跟踪功能以及目标轨迹显示等功能。
The designed system is implemented with electronic vector mapping function, vehicle positioning and navigating function, vehicle-track showing function etc.
峰值信噪比(PSNR)等基于能量的度量指标在应用于矢量地图水印系统时具有一定的局限性。
Some energy based metrics, e. g. peak signal to noise ratio (PSNR), have some limitations while applied to vector map watermarking systems.
同时，数字矢量地图制作成本极高，针对数字矢量地图的非法拷贝、窃取等侵权行为也日益猖獗。
And its fabricating cost is huge. On the other hand, illegal copying and stealing of digital vector map are becoming increasingly rampant.
这两个模块的结合，实现了遥感影像、矢量地图、数字高程模型以及三维场景数据的统一管理和调度。
All of these two modules achieve unified management and scheduling about remote sensing images, vector maps, digital elevation models and three-dimensional scene data.
与传统的线性自动校正算法相比，这种算法可以有效地消除矢量地图中的非线性误差，理论上也有所深入。
Compared to the traditional linear auto-adjusting algorithm, it can effectively remove the nonlinear errors of a vector map and also runs deep on theory.
加密技术是保障数据安全的最主要的手段，结合矢量地图数据的特点，设计了一种基于混沌序列的数据加密算法。
Data encryption is a main means to keep data in safety. Concerning the characteristics of vector map data, the paper presents an encryption algorithm based on chaotic sequence.
从实用的角度出发，阐述了矢量地图在GIS领域中的重要性，并对由纸制地图生成的矢量地图的误差来源进行了分析。
This article explained the importance of vector map in GIS, and analyzed the error in the vector map transformed from paper map in practicality.
这篇论文主要讲述了基于J2ME 的矢量地图浏览器研究与开发，最终完成和实现了对地图浏览器的开发，全文分为六章。
This paper mainly describes how to design and realize a vector map browser, which is based on the J2ME, and make a successful illustration. There are six chaptersin all.
其次，针对基于属性特征的无损数字水印算法在抵抗常见的地图编辑操作时鲁棒性能较弱的不足，提出了基于空间特征的数字矢量地图水印算法。
Secondly, a digital watermark algorithm based on spatial characteristic has been discussed for the weakness of the first algorithm in resisting attacks of traditional map operations.
其次，针对基于属性特征的无损数字水印算法在抵抗常见的地图编辑操作时鲁棒性能较弱的不足，提出了基于空间特征的数字矢量地图水印算法。
Secondly, a digital watermark algorithm based on spatial characteristic has been discussed for the weakness of the first algorithm in resisting attacks of traditional map operations.
应用推荐