不同船体构造形式在波浪载荷下的结构性能比较

船体结构形式不同,直接影响船体的结构性能和运动性能。文章针对五种船体构造形式,即:单板横向加筋、单板纵向加筋、单板双向加筋、硬壳式和夹层式这五种不同结构的船体在外载相同、质量相等的条件下进行应力与变形分析,以比较各种结构的响应和性能,为结构选型提供数值分析依据。分析考虑了静载与波浪载荷的叠加,并进行了准静态处理。通过计算和综合性能比较,挑选出既符合结构性能,又能满足使用要求的结构形式。     

基于数学形态变换的数字影象分析算法研究

数学形态学是研究数字影象形态结构特征的一门新兴理论，它在数字图象处理领域中有很强的应用。本文从数学形态学理论出发，研制了一套形态变换算法，并用于规则几何形状的数字影象分割和边缘检测，取得了令人满意的效果。     

一种基于数学形态学的灰度图象边缘检测方法

本文用数学形态学的理论，提出了一种新的灰度图像边缘检测算法。并通过选取合适的结构元素，在微机图象处理系统上，用软件的方法加以具体实现。结果表明：这种方法算法简单，运算速度快，效果好。     

Application of image morphology in detecting and extracting the initial welding position

A method of image morphology in detecting and extracting the initial welding position during the autonomous welding process is described. During the process, firstly visual sensing technology is used to capture the straight seam image, and secondly the image edges are detected by morphological corrosion edge detection algorithm, with which can retain the critical information while filter other interferences effectively at the same time. Then morphological processing algorithm is used to conduct the direction of filter by selecting the multidirectional linear structuring elements and finally get the initial weld position point coordinates with the Hough transform. The algorithm is simple, rapid, self-adaptability with high accuracy for interferences except long lines so as to accomplish the entire process of detecting the initial welding position. It can meet the practical demands of automatic guidance for robotic welding.