I=imread('123.bmp');
figure,imshow(I);
***********************************
请问怎样能够在图像上划线,就像在PhotoShop中那样?或者记下鼠标划过的所有像素点?
谢谢!

p=get(gcf,'pos');axes('units','pixels','pos',[0 0 p(3) p(4)],'xlim',[0 p(3)],'ylim',[0 p(4)]);hold on;set(gcf,'doublebuffer','on','windowbuttonmotion','x=get(gcf,''currentpoint'');plot(x(1),x(2),''.'');');

谢谢!