Starting from detection of vertical lines, a strategy for automatic extraction of high-rise building in monocular high-resolution aerial images is developed under the evidential reasoning methodology, while many useful information in object space and image space are combined, and multiple advanced techniques of signal processing and computer vision are incorporate.
由建筑物垂直边缘检测出发,采用证据推理法,该文提出了一种在单视角高分辨率航空影像中自动提取高层建筑物的策略。
In this paper, in order to extract vertical lines, a simple method for determining the vanishing point of vertical lines is first analyzed based on the knowledge about the aerial photogrammetry.
航空影像中 ,垂直边缘对建筑物提取具有重要意义。
First, in order to acquire periodic texture signals, gray-levels down the vertical lines are picked-up; and in order to enhance signal s robustness for noise and to catch the transversal orientation of texture, gray-le.
依据灰度图像中窗户区域呈现出的明暗变化规律,在建筑物垂直边缘检测的基础上,利用时频分析和Radon变换描述了窗户纹理的周期性和方向性。
Construction of pressure dispersion-type anchorage cable at intake vertical side slope;
进水口垂直边坡压力分散型锚索的施工
The geological condition at the intake of Baise power plant is complicated, and the stability of vertical side slope is a very outstanding problem which may lead to hidden trouble for the normal operation after construction is completed.
百色水利枢纽水电站工程进水口地质条件复杂、垂直边坡的稳定问题十分突出,也可能给工程竣工后正常运营留下安全隐患。
Based on soil plasticity and limit analysis theory, togther with tensile and shear forces of soil-nails considered, a designing method of vertical slopes reinforced by soil-nails is proposed under reasonable value of energy safety factor.
基于土的塑性极限分析理论，考虑土钉的抗拉和抗剪强度效应，结合能量安全系数的合理取值，本文提出了土钉加固竖直边坡的设计方法，并通过实例论证了该设计方法的合理性。