In this paper, we investigate the urban building extraction from airborne LIDAR points cloud data.
本文以航空LIDAR点云数据为基础，研究了城市地区建筑物的提取。
In aerial images, a good description for window textures is of great significance for building extraction.
航空影像中，窗户纹理的合理描述对建筑物提取具有重要意义。
With the emergence of LIDAR technology, three-dimensional building extraction has also been more and more attention.
随着LIDAR技术的出现，三维建筑物的提取也受到越来越多的重视。
Experiments show that the method can improve the accuracy of building extraction, and that the precision of location is higher.
试验表明，本方法能提高提取建筑物的精度，其定位精度较高。
Experimental results showed that the improved algorithm is more effective than the line analysis based method and has good results of building extraction from sensing image.
实验结果显示，该算法优于单一的基于线段分析的方法，对遥感图像中建筑物的提取具有较好的效果。
This paper describes a new vectorization approach based on corners detection and positioning for the vectorization extraction of rectangle building.
本文针对矩形建筑物的轮廓矢量化提取技术，提出了一种新的基于角点识别和定位的矢量化方法。
Faced with these problems, this paper presents new methods for parameter extraction of memory on the base of current research about library building technology.
针对以上问题，本文在研究已有建库技术的基础上，针对存储器的逻辑参数提取提出新的解决方案。
For the building shadow in downtown area, it adopts the Shadow Automated Extraction Method of IKONOS Images Based on Image Fusion to extract and the Lamber model to rectify;
对城区建筑物阴影，采用基于影像融合的IKONOS影像阴影自动提取方法对阴影进行提取，再采用郎伯模型进行校正；
Assembly information model and the assembly information extraction are the base of building the system of digitized assembly.
装配信息模型及装配信息提取是构建数字化装配系统的基础。
In a word, this paper based on the airborne LIDAR points cloud data achieves the extraction of urban building by using digital image processing technique without any assistance data.
总之，本文以航空LIDAR点云数据为基础，在无其他辅助数据的情况下，采用数字图像处理技术，实现了基于航空LIDAR点云数据提取城市地区建筑物的目标。
Based on the established indicator data system, building table and field mapping between the indicator cadastral database and the county level databases for cadastral data extraction.
在地籍数据指标体系确立的基础上，建立指标数据库和试点县级地籍数据库之间的表和字段映射，进行地籍数据提取。
The building boundary extraction and normalization are the key approach for LIDAR data processing and building 3D modeling.
建筑轮廓线提取与规则化是LIDAR数据处理和建筑三维建模的重要步骤和技术难点。
In the semiautomatic extraction system, the building model is defined by selected roof type input through human_machine interface and input points of rough position of the building by operator.
操作员通过人机界面选择房屋的种类并输入初始位置 ，然后经过边缘检测、直线段提取和据此房屋几何模型的线段自动编组等处理得到各房屋角点的初始位置。
Information extraction is an effective way of processing various texts, but building a information extraction system is very difficult and time-consuming.
信息抽取是一种用于处理各种类型文本文档的非常有效的方法，然而建立一个文本信息抽取系统却是非常困难和耗费时间的。
Air of kitchen and diesel generator room is exhausted by filter-type extraction hood, which is laid on the roof of the building.
厨房及柴油发电机房排风采用过滤型排气罩，且屋顶排放。
Fans are used in many technical fields - from process engineering and thermal processes to dust extraction applications and building services.
鼓风机被广泛应用于很多的技术领域中，从工程和热处理到除尘应用和建筑的维护。
The Search to Properties of Fire Smoke Flow and Air Supplement and Mechanical Smoke Extraction Systems in Corridor of Building;
根据虚拟风机优选出实体风机，将实体风机带入烟流软件，得出了机械排烟条件下的烟流特性参数。
The Search to Properties of Fire Smoke Flow and Air Supplement and Mechanical Smoke Extraction Systems in Corridor of Building;
根据虚拟风机优选出实体风机，将实体风机带入烟流软件，得出了机械排烟条件下的烟流特性参数。
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