标签:matlab
%11.边界跟踪 (bwtraceboundary函数) clc; clear; I=imread('e:\role0\003i.bmp'); figure; imshow(I); title('原始图像'); I1=rgb2gray(I); %将彩色图像转化灰度图像 threshold=graythresh(I1); %计算将灰度图像转化为二值图像所需的门限 BW=im2bw(I1, threshold); %将灰度图像转化为二值图像 figure imshow(BW); title('二值图像'); dim=size(BW); col=round(dim(2)/2)-90; %计算起始点列坐标 row=find(BW(:,col),1); %计算起始点行坐标 connectivity=8; num_points=180; contour=bwtraceboundary(BW,[row,col],'N',connectivity,num_points); %提取边界 figure imshow(I1); hold on; plot(contour(:,2),contour(:,1), 'g','LineWidth' ,2); title('边界跟踪图像');
标签:matlab
原文地址:http://blog.csdn.net/whk100312/article/details/45625253