alpha, beta, 1, numberOfShapesInEachClass * numberOfClasses); %DrawContoursAndMassCenters(testImage, Psi, sz_i); end hold off; %% Feature extraction and loading feature priors load('trainingShapesAndFeatures/featureTraining.mat'); % load feature training set featureTraining = featureTraining / ...
I found the following in posted material for a course at Stanford. It's a pretty intuitive explanation of how alpha shapes work, and clears up my question, if it is accurate. --- As mentioned in Edelsbrunner’s and M ̈ucke’s paper [3], one can intuitively think of an α...
简介 分水岭算法是一种图像区域分割法,分割的过程中将图片转化为灰度图,然后将灰度值看作是海拔,然后向较低点注水,这种基于地形学的解释,我们着重考虑三种点: 1)极小值点,该点对应一个盆地的最低点,当我们在盆地里滴一滴水的时候,由于重力作用,水最终会汇聚到该点。注意:可能存在一个最小值面,该平面内的都...
himage=imshow(Lrgb);himage.AlphaData=0.2;%使用透明方式将此伪颜色标签矩阵叠加到原始强度图像上title('彩色Label')
如果图像中的目标物体是连接在一起的,则分割起来会更困难,分水岭分割算法经常用于处理这类问题,通常会取得比较好的效果。分水岭分割算法把图像看成一幅“地形图”,其中亮度比较强的区域像素值较大,而比较暗的区域像素值较小,通过寻找“汇水盆地”和“分水岭界限”,对图像进行分割。
14、syoucanseebycomparingIobrcbrwithIoc,reconstruction-basedopeningandclosingaremoreeffectivethanstandardopeningandclosingatremovingsmallblemisheswithoutaffectingtheoverallshapesoftheobjects.CalculatetheregionalmaximaofIobrcbrtoobtaingoodforegroundmarkers.通过比较Iobrcbr和loc可以看到,在移除小污点同时不影响对象全局形状的...
Besl, N.D. McKay, "A Method for Registration of 3D Shapes", 1992 cthissen/Drex-MATLAB - olivine LPO simulation cqijoe/Matlab_Geophysics - Geophysics programs written in Matlab brookstaylorjr/MACKtrack - Automated cell tracking package for MATLAB bonbrown/matlab_utilities - Short MATLAB functions...
formatSpec 输入中的 %4.2f 指定输出中每行的第一个值为浮点数，字段宽度为四位数，包括小数点后的...
说出来你们可能不信,整个读取过程只涉及三个函数,fopen、fread、fseek。 首先是fopen,对于此函数的用法,我们仅挑选对处理点云最有用、最简单的方式: fid=fopen(lasfile); 此处返回值为大于等于3的正整数,通常情况下是3,后续在不使用fclose的情况下,每调用一次fopen函数,fid的值加1。其他参数不填,使用默认值。
shapes. To study these response, we write H(e jw ) as 2 1 , 2 ; ) ( ) ( ) (M e e H e H w j jw r jwHr(e jw ) is an amplitude response function and not a magnitude response function. The phase response associated with the magnitude response is a ...