setting image position centered
30 views (last 30 days)
Show older comments
I have an image in the figure as shown above.
I want to display region of interest (white portion) at the center of the figure window (align centered position-registration). How can I do it?
Please explain. Thank you.
0 Comments
Accepted Answer
Image Analyst
on 7 May 2022
Edited: Image Analyst
on 7 May 2022
rgbImage = imread('image.png');
subplot(2, 1, 1);
imshow(rgbImage)
axis('on', 'image')
% Get binary image from the RGB image the poster attached.
binaryImage = rgbImage(:, :, 1) > 128;
% Find centroid.
props = regionprops(binaryImage, 'Centroid')
% Translate the image.
xt = props.Centroid(1)
yt = props.Centroid(2)
% Get center of image
[rows, columns, numberOfColorChannels] = size(binaryImage)
xc = columns/2;
yc = rows/2;
deltax = xc - xt
deltay = yc - yt
hold on;
plot(xt, yt, 'r+', 'LineWidth', 2, 'MarkerSize', 60);
centeredImage = imtranslate(rgbImage,[deltax deltay],'FillValues', 0);
subplot(2, 1, 2);
imshow(centeredImage)
axis('on', 'image')
% Draw center lines.
xline(xc, 'LineWidth', 2, 'Color', 'r');
yline(yc, 'LineWidth', 2, 'Color', 'r');
9 Comments
Image Analyst
on 8 May 2022
Loooks like you have a huge white frame around your blobs. Why? It also looks like your image has a black caption atop the image. Why? Are these screenshots of an entire figure rather than a binary image you got from a photo?
More Answers (0)
See Also
Categories
Find more on Computer Vision with Simulink in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!