Error when using createMask

I am trying to develop a code in which I want to modify a figure. However, when I call createMask, I get an error saying "Undifined function or variable 'createMask'.

This is the code:

% read the original image

I = imread('TEST.PNG');

% call createMask function to get the mask and the filtered image

[BW,maskedRGBImage] = createMask(I);

% plot the original image, mask and filtered image all in one figure

subplot(1,3,1);imshow(I);title('Original Image');

subplot(1,3,2);imshow(BW);title('Mask');

subplot(1,3,3);imshow(maskedRGBImage);title('Filtered Image');

Any suggestions?

Answer 1

[Brian Hart]

Hi Manuel,

A mask is created from an ROI (region of interest), not an image. First you need to create an ROI with drawellipse, drawfreehand, etc. Then you can create a binary mask.

See the documentation for createMask for a good example.