zhixiantiqu.zip_hough提取直线_image transform_图像提取直线

%Hough变换检测直线 I=imread('circuit.tif'); % I=rgb2gray(I); %图像逆时针旋转45度 rotI=imrotate(I,33,'crop'); %用log算子提取图像边缘 BW=edge(rotI,'log'); %对图像进行hough变换 [H,T,R]=hough(BW); %寻找参数平面上的极值点 P=houghpeaks(H,5,'threshold',ceil(0.3*max(H(:)))); x=T(P(:,2));y=R(P(:,1)); %找出对应的直线边缘 lines=houghlines(BW,T,R,P,'FillGap',5,'MinLength',7); max_len=0; figure,imshow(rotI),hold on; for k=1:length(lines) xy=[lines(k).point1; lines(k).point2]; plot(xy(:,1),xy(:,2),'LineWidth',2,'Color','green'); %标记直线边缘对应的起点 plot(xy(1,1),xy(1,2),'x','LineWidth',2,'Color','yellow'); plot(xy(2,1),xy(2,2),'x','LineWidth',2,'Color','red'); end