how to superimpose the image of retina?

how can i superimpose the image...

this is my gray image

this is my binary image

thnx :)

Answer 1

[Image Analyst]

See these examples/instructions from the Mathworks:

http://blogs.mathworks.com/steve/2009/02/18/image-overlay-using-transparency/

http://www.mathworks.com/matlabcentral/answers/104889-how-to-overlay-a-foreground-image-over-a-background-image

[Farah Nadiah]

if i want the green color become black what is the coding? thanx :)

[Image Analyst]

If you want the white in your binary image to become black in your gray scale image, do this:

grayImage(binaryImage) = 0; % Erase where binary image is white.
imshow(grayImage, []);

[Farah Nadiah]

if i get this image how can i change the red to black color.. thanx :) </matlabcentral/answers/uploaded_files/48688/sp2.jpg>