%Function Name: colorScreen % Inputs (3): - (char) a filename of a foreground im

ID: 3539875 • Letter: #

Question

%Function Name: colorScreen

% Inputs (3): - (char) a filename of a foreground image

% - (char) a filename of a background image

% - (double) a vector of length three of RGB values to replace

% Outputs (1): - (uint8) a uint8 array with the colorScreen effect applied

% Function Description:

% Given two images, write a function called "colorScreen" that will

% replace all pixels in the first image that match a given RGB value with

% the corresponding pixels in the second image. For example, if the

% following is called:

% colorScreen('img1.bmp','img2.bmp', [0 255 0]);

% A uint8 array should be returned that should look like 'img1.bmp', but

% with all of the pure green pixels replaced with the corresponding pixel

% in 'img2.bmp'.

% Notes:

% - You do not have to use a for loop in this problem. For loops are a

% very slow and inefficent due to the size of the images that must be

% looped though. Consider logical indexing instead.

% - The two input images will always be the same size.

% Test Cases:

% im1 = colorScreen('trex.bmp','ttower.bmp',[0 255 0]);

% imshow(im1)

% => should look like soln1.bmp

% im2 = colorScreen('lookit.bmp','pic.bmp',[237 28 36]);

% imshow(im2)

% => should look like soln2.bmp

very interesting

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