Using visboundaries with imagesc

Hi to all,

I am trying to use the visboundaries command to plot some boundaries over an image plotted with imagesc.

subplot(2,4,1), hold on, imagesc(W_1,[min,max]), visboundaries(Vmask), hold off

The problem is that visboundaries "flips" the image upside down. How can it be solved?

Find below the results:

Best, thanks Giulio

Answer 1

[Image Analyst]

I don't know exactly what you're doing but it doesn't flip the image. Try this demo:

grayImage = imread('coins.png');
subplot(2,2,1);
imshow(grayImage);
subplot(2,2,2);
histogram(grayImage);
grid on;

mask = grayImage > 100;
subplot(2,2,3);
imshow(mask);

subplot(2,2,4);
imshow(grayImage);
hold on;
visboundaries(mask);

Try calling hold on AFTER you've displayed something, not before.