英语翻译关于图像边缘的最好是自己翻译的用GOOGLE翻译的就别发了翻译差不多的追加80分小弟的分就那么多了全给了2.2EdgeEdgeisapartofanimagethatcontainssignificantvariation.Theedgesprovideimpo

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英语翻译
关于图像边缘的 最好是自己翻译的 用GOOGLE翻译的就别发了 翻译差不多的追加80分 小弟的分就那么多了全给了
2.2 Edge
Edge is a part of an image that contains significant variation.The edges provide important visual information since they correspond to major physical,photometrical or geometrical variations in scene object.Physical edges are produced by variation in the reflectance,illumination,orientation,and depth of scene surfaces.Since image intensity is often proportional to scene radiance,physical edges are represented by changes in the intensity function of an image [2].
The most common edge types are steps,lines and junctions.The step edges are mainly produced by a physical edge,an object hiding another or a shadow on a surface.It generally occurs between two regions having almost constant,but different,grey levels.The step edges are the points at which the grey level discontinuity occurs,and localized at the inflection points.They can be detected by using the gradient of intensity function of the image.Step edges are localized as positive maxima or negative minima of the first-order derivative or as zero-crossings of the second-order derivative (Figure 1).It is more realistic to consider a step edge as a combination of several inflection points.The most commonly used edge model is the double step edge.There are two types of double edges:the pulse and the staircase (Figure 2).
The line edges are often created by either a mutual illumination between two objects that are in contact or a thin object placed over a background.Line edges correspond to local extremes in the intensity function.Lines correspond to local extrema of the image.They are localized as zero-crossings of the first derivative,or local maxima of the Laplacian,or local maxima of the grey level variance of the smoothed image.This type of edge is successfully used in remote sensing images for instance to detect roads and rivers [2].Finally,the junction edge is formed where two or more edges meet together.A physical corner is formed at the junction of at least two physical edges.Illumination effects or occlusion,in which an edge occludes another,can produce a junction edge.Figure 3 depicts profiles of line and junction edges.The junction can be localized in various ways:e.g.,a point with high curvature,or a point with great variation in gradient direction,or a zero-crossing of the Laplacian with high curvature or near an elliptic extremum.Though,the most of our studies encompass the all types of edges,but the majority of the reviewed literature is adapted to step edges,which are the most common.

Answer 1

22边
边缘的一个部分,有重大变化的图像.提供重要的视觉信息的边缘,因为他们符合专业物理、photometrical或几何变化的场景的对象.物理边缘产生变异的反射率、照明、定位、深邃的场景的表面.自从图像灰度往往是成正比的场景的光辉,物理边界为改变形象的强度作用[2].
最常见的边缘类型的步骤,线条和连接.这个步骤边缘的主要通过物理边,一个物体或一个阴影隐藏在表面上.它通常发生在两个区域,但几乎一样,灰色的水平.这个步骤的边缘点,灰色层次不连续的拐点局部点.他们可以采用梯度功能的强度的形象.积极步骤边局部极值的或负面的最小的一阶导数或zero-crossings二阶导数(图1).它是更实际的考虑一个步骤了由几个影响点.最常用的两步边缘模型的边缘.有两种类型的双重边缘:脉搏和楼梯上(图2).
直线边缘往往由一两个物体间相互照明,在接触或薄物体放置在一个背景.直线边缘与当地极端强度的作用.与当地extrema线的形象.他们的zero-crossings定位为全导数,或者是当地的最大值,或当地的最大值拉普拉斯灰色层次变异的图象.平滑这种类型的边缘被成功地用于遥感影像检测道路,比如河流[2].最后,结边形成两个或者两个以上边聚在一起.物理角落的交界处形成至少两种物质的边缘.照明效果或阻塞,occludes边,可以产生一个交界处的边缘.图3描绘的线条和交界处的边缘.可本地化的交接处用各种方式:例如,一个点曲率、或点高梯度方向以极大的变化,或者一个范围的拉普拉斯高弯曲靠近椭圆的极值.虽然,我们的研究包括了所有类型的边缘,但大多数的回顾文献是适应边缘,逐步最常见的.
哥子,这样就行了,不要你的家当勒.