to make the rectangle move over the image

Question

ramya raj 2011-8-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/13444-to-make-the-rectangle-move-over-the-image

hai

i am new to matlab i doing a project for locating the optic disc for that i have create a rectangular window and make the window to move the image and calculate the sum of edge diff inside the window and divide that by sum of intensity inside the window

now i have created a window but i don't know how to move the rectangular window

this is my code please help me

_clc; clear all; close all; fundus=imread('D:\10mcs010\im0001.ppm'); grayImage=fundus(:,:,1);

 subplot(4, 4, 1);
 imshow(grayImage);
title('Original Grayscale Image');
binaryImage = grayImage > 35; 
% Display the binary image.
 subplot(4, 4, 2);
imshow(binaryImage);
title('Binary Image');
A=[0 0 0;0 1 0;0 0 0];
op=imopen(binaryImage,A);
subplot(4,4,3);
imshow(op);
title('open image');
clos=imopen(op,A);
subplot(4,4,4);
imshow(clos);
title('closeimage');
eror=imopen(clos,A);
subplot(4,4,5);
imshow(eror);
subplot(4,4,6);
 maskedRgbImage = bsxfun(@times, fundus, cast(eror,class(fundus)));
imshow(maskedRgbImage);
title('RGB IMAGE');
g=maskedRgbImage(:,:,2);
 subplot(4,4,7);
 imshow(g);
title ('Green component');
subplot(4,4,8);
 imv=conv2(double(g),[1 0 -1],'same');
 imshow((imv));
 title ('vertical image');
 subplot(4,4,9);
 imh=conv2(double(g),[1;0;-1],'same');
 imshow(imh);
 re=imh;
 imwrite(re,'horizontal.tif');
title ('horizontal image');
 edgesum=abs(imh)+abs(imv);
% % intens=impixel(fundus);
% 
% %  figure,imshow(edgesum);
% edgediff=abs(imv)-abs(imh);
   im = imread('horizontal.tif');
   subplot(4,4,10);
   imshow(im);
 r=rectangle('Position',[10,10,12,560]);
 set(r,'edgecolor','w') % change the color of the rectangle to white
title('image with rectangle');_

*BOLD TEXT*

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Walter Roberson 2011-8-20

duplicate is at http://www.mathworks.com/matlabcentral/answers/13866-move-rectangle-over-te-image

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Jason 2011-8-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/13444-to-make-the-rectangle-move-over-the-image#answer_18344

在 MATLAB Online 中打开

You can use imrect and use the mouse to size and move. It returns the position and size.

h = imrect;
pos = h.getPosition();

Jason

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Image Analyst 2011-8-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/13444-to-make-the-rectangle-move-over-the-image#answer_18350

How about using rbbox()? It lets your user draw a box. There's sample code in its help.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 3

ramya raj 2011-8-20

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/13444-to-make-the-rectangle-move-over-the-image#answer_19295

the rectangle can be created by using rectangle function

which take the syntax of rectangle(x,y,w,h) x - x coordinate y - y coordinate w - width of the rectangle h - height of the rectangle

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 4

Walter Roberson 2011-8-20

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/13444-to-make-the-rectangle-move-over-the-image#answer_19296

This seems to me to be a make-work project. Moving a virtual array over the data array would be much much more efficient than drawing a rectangle on the screen and figuring out what is inside the drawn portion.