The object motion was represented using hierarchical data structure of quad tree.
采用四叉树的层次数据结构来表示物体运动。
A plane surface approximation method for image coding and its quad tree scheme are presented in this paper.
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。
The unique properties of quad tree data structure and divided pyramid image into partitions by using quad tree methods;
四叉树数据结构的特性与其邻域寻找算法，并将多分辨率影像数据按照四叉树结构进行分块处理；
Out of the blue he then landed on my head when I got on the quad and I drove straight into a tree.
在我跳上机车时，它突然降到我头上来，然后我就直接撞到树上了。
Each node represents one DEM data block. According this separation, by quad-tree data structure can get global different resolution DEM data storage architecture.
每个结点表示一个DEM数据分块，根据如此剖分，由这棵四叉树结构就得到全球范围不同分辨率的DEM数据存储结构。
The generation algorithm of adaptive mesh which is based on the quad-tree data structure is presented.
以四分树为数据结构，建立了网格细分法生成自适应网格算法。
QR-tree, a spatial index structure based on R-tree and a kind of space partition method using Quad-tree, is proposed. Its data structure and algorithms are also stated.
提出了一种基于R-树与“四叉树”空间层次划分的空间索引结构QR-树，给出了其数据结构和算法描述。
A push service system for location based tourism information was proposed by the combination of linear quad-tree, wireless network, Geographic information system (GIS) and cross media techniques.
结合线性四叉树、无线互联网、地理信息系统(GIS)和跨媒体技术，实现了一个具有高真实感、较强交互能力的旅游信息主动推送服务系统。
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.
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。
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.
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。
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.
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。
First, the authors discussed the general method of LOD based on adaptive quad-tree and described the triangle-fan method for model drawing;
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;
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；
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