How to show a gray scale image with its contour in one figure?
1 view (last 30 days)
Show older comments
Hello, guys:
I extracted two contours of a gray scale image, shown as following. But I can't make the contours shown upon the original gray scale imageg to get only one figure, I need a help, thanks a lot! The wanted result is like the third picture.
0 Comments
Answers (2)
Nils Speetzen
on 6 Jul 2019
Hi,
finalimage = imfuse(grayscaleimage, contour, 'blend');
imshow(finalimage)
The blend option uses alpha blending to combine both images.
I hope this works for you.
Image Analyst
on 7 Jul 2019
Try imshow() to display the image, then don't call subplot() or figure(). Just call "hold on" and then call plot() to plot the lines in the overlay above the figure.
imshow(grayImage);
hold on;
plot(x1, y1, 'm-'); % Draw magenta curve over image.
plot(x2, y2, 'g-'); % Draw green curve over image.
5 Comments
Image Analyst
on 9 Jul 2019
The gets the perimeter as an image, like bwboundaries() which gets the perimeters as a list of (x,y) coordinates. If you want to know how to use bwboundaries() and plot() to put up the lines in the overlay above the image, just ask.
Don't use contour as the name of your variable since it's the name of a built-in function.
See Also
Categories
Find more on Lighting, Transparency, and Shading in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!