How we can merge mask on RGB image

Suppose I am having original image '1.jpg'- dimensions (605x700x3 uint8) and mask image 'D'-dimensions (255x255 unit 8). How do I showcase mask image on original image?

Answer 1

[Image Analyst]

I don't know what "showcase" means to you, but maybe you mean to mask the RGB image with the binary image. If so, do this:

% Mask the image using bsxfun() function to multiply the mask by each channel individually.
maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));

[Image Analyst]

Or maybe you want to overlay the mask in a tinted color over the image:

https://blogs.mathworks.com/steve/2006/03/28/image-overlays/

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

Answer 2

[sakshi ahuja]

I tried this- maskedRgbImage = bsxfun(@times, img, cast(D, 'like', img)); but it is giving error- Error using bsxfun Non-singleton dimensions of the two input arrays must match each other. Final image has been attached.

[Image Analyst]

D must be a 2-D logical image. img must be a 3-D RGB full color image. They both must have the same number of rows and columns. What does this show in the command window:

[rowsD, colsD, colorsD] = size(D)  % No semicolon!
[rowsi, colsi, colorsi] = size(img) % No semicolon!