imcrop image with hold on plot

2 views (last 30 days)
Alejandro Fernández
Alejandro Fernández on 25 Jul 2020
Commented: Image Analyst on 25 Jul 2020
Does someone know how can I crop and image and a plot to obtein both the result in another figure, I tried with getframe and frame2im but it pixels the image too much.. Does someone know another option?
And I need to do it in comand line automaticalle, not using the figure option. In rect you can see the rect i would like to use in the imcrop function.
I = imread('cameraman.tif');
rect = [71.5 92.5 101 76];
figure, imshow(I);
hold on
plot(1:200,'LineWidth',2)
Thank you
  2 Comments
KSSV
KSSV on 25 Jul 2020
You ave not cropped your image. Question is not clear.
Alejandro Fernández
Alejandro Fernández on 25 Jul 2020
Sorry, I thought the question was clear, let me try to explain it to you with an example. Imagine I have a function that returns a figure containing the representation of an image and with hold on some data from the plot function. What I need is to cut out that figure which is extracted from the previous function

Sign in to comment.

Answers (1)

Image Analyst
Image Analyst on 25 Jul 2020
I = imread('cameraman.tif');
rect = [71.5 92.5 101 76];
figure
subplot(2, 1, 1);
imshow(I);
croppedImage = imcrop(I, rect);
subplot(2, 1, 2);
imshow(croppedImage);
  2 Comments
Alejandro Fernández
Alejandro Fernández on 25 Jul 2020
That's not what i'm asking... i need to crop it with the :
plot(1:200,'LineWidth',2)
Image Analyst
Image Analyst on 25 Jul 2020
plot() does not do cropping. Not sure why you think it does. plot() will just overlay a line/curve onto the image. Cropped images need to remain rectangular. If you want to blacken rows beyond a certain row, you can do that though
for col = 1 : 200
grayImage(col:end, col) = 0; % or whatever intensity you want.
end

Sign in to comment.

Categories

Find more on Image Processing Toolbox in Help Center and File Exchange

Products


Release

R2020a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!