使用四叉树网格顶部的水平。
介绍了地学图形数据的四叉树编码数据结构。
This paper presents the data structure of quadtree coding for geo graphics data.
采用四叉树的层次数据结构来表示物体运动。
The object motion was represented using hierarchical data structure of quad tree.
介绍了二维图形数据的线性四叉树编码数据结构。
The data structure of linear quadtree coding for two-dimension graphic data is presented.
四叉树操作二郎将编辑一个四叉树记录无效的父母吗？
Quadtree manipulation in Erlang - Will editing a quadtree record invalidate the parent?
提出了一种基于自适应四叉树分形编码的数字水印技术。
This article introduces a digital watermarking technology based on adaptive quadtree fractal coding.
提出了表示二值图像的模式四叉树(PQT)数据结构。
A pattern quadtree (PQT) data structure for representing binary images is presented.
该文提出了一种平面逼近图像编码方法及其四叉树实现方案。
A plane surface approximation method for image coding and its quad tree scheme are presented in this paper.
可变块分割的方法是采用基于多分辨率四叉树分解的运动分割。
The variable block segmentation is based on a multi-resolution quadtree-based motion segmentation.
最后提出了一种基于四叉树索引的海量图片的存储与检索方法。
And then he proposes a set of solution for cutting map image and storage of mass raster image.
为了得到可变的位率，在分形图像压缩中经常采用四叉树分割方法。
Quadtree partitions are often used in fractal image compression to achieve variable bit rates.
四叉树编码方法是目前图象处理和计算机图形学中的一种有效方法。
Quadtree coding is currently a valuable method in image processing and computer graphics.
树是除根节点外其余的节点均为0的四叉树，它是零树的一种推广。
An X-tree is a spatial hierarchical tree whose all nodes are 0 except the root node. It is the generalization of the zero tree.
首先提出了基于边缘信息测度的四叉树自适应分块的DCT压缩算法。
Firstly, an adaptive segmentation DCT coding method based on edge information measure is developed.
使用这种四叉树，我们可以在场景的不同的地方用不同的方法压缩高度数据。
Using this quadtree, we can encode height data at different resolutions in different regions in the terrain.
除了全自动的改进四叉树法和交互的映射法，只有少数方法生成四边形网格。
Except automatic generation quadtree method and interaction mapping method, few methods could generate quadrangle mesh.
本文采用四叉树分割多边形，用以实现多边形的色彩填充及其相互之间的运算。
In this paper, The quadtree is adopted to divide polygons to realize color filling and calculation of polygons are also introduced.
最后，本文还给出了LDST与线性四叉树之间的转换算法及时间复杂度分析。
The conversion algorithm between LDST and linear quadtree and its time complexity analysis are also studied at the end of the paper.
一些聪明的算法可能会发现最接近的匹配速度快，像四叉树或二进制空间分割。
Some clever algorithms might find the closest match faster, like quadtrees or binary space partitioning.
做一个四叉树的解决方案适合这个问题，或者有更好的替代方案来管理数据?。
Does a QuadTree solution fit this problem, or are there better alternatives to managing the data?
采用基于线性四叉树的格网索引对点云数据建立索引，对点云数据进行分块提取；
The grid index based on linear quadtree is used to index the point cloud data, extracting the point cloud on the block.
针对图割算法实时性差的问题，提出一种基于四叉树与图割的遥感图像分割方法。
Aiming at the problem of poor real-time ability of graph cut, this paper suggests a remote sensing image segmentation approach based on quarter-tree and graph cut.
该算法结合图像的四叉树分解原理，利用图像小波域低频系数的特征来构造零水印。
The algorithm combines the quadtree decomposition of image, with making use of the characteristic of the lowest frequency coefficients in DWT domain to construct non-watermark.
因此，在本文的第四章结合经典四叉树方法，提出一种基于分形维数的四叉树方法。
Hence, in chapter four, combined with traditional quad-tree image compression method, an algorithm of quad-tree image compression based on fractal dimension is proposed.
本文结合基于位长四叉树和上下文模型的嵌入零块编码算法提出了一种带描述的流打包方法。
A new stream packet method with stream description is brought forward in this dissertation by linking with the Bit Length Quad-tree Not List Embedded Zero Block Coding and Context Modeling algorithm.
首先讨论了基于自适应四叉树实现LOD的一般方法，详细探讨了模型连接的三角扇绘制法；
First, the authors discussed the general method of LOD based on adaptive quad-tree and described the triangle-fan method for model drawing;
提出了基于四叉树和三角化方法的一种简单、快速且有效的平面结构区域内网格自动生成方法。
A simple, speedy but efficient algorithm for automatic mesh generation over arbitrary polygonal domain is proposed in this paper.
使用快速生成的四叉树进行区域查询，在提高查询效率的同时，有效缩短构造空间索引的时间。
It used a fast-created quad-tree to execute region query, which not only improved the query efficiency, but also shortened the time of constructing a spatial index.
针对有限元前置处理中二维复杂域四边形网格自动剖分问题，对四叉树网格剖分算法进行了研究。
The arithmetic of quadtree mesh generation was studied in order to solve the problem of the finite element automatic quadrilateral mesh generation for a two dimensional complex region.
提出了基于四叉树分形编码的水印算法，通过在不同寻找区域中搜索最佳匹配定义域块来嵌入水印。
This paper proposes a watermarking algorithm based on quadtree fractal coding, which is to search for the optimized matched domain blocks in different regions and to embed the watermarking.
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