How to create a black image using MATLAB?

2015 5 27
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Hello!
I have an image and I need a black image with same dimensions as the first one. The second image needs to be all black. Please, is it possible to create a black image specifying its dimensions or to paint the image I have with black color?
Thanks for the help!

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B.k Sumedha
B.k Sumedha 2015-5-27
Have u tried with im2bw function..
Ana Olivia
Ana Olivia 2015-5-27
Thank you! I tried to use this function, but it didn`t work. I think I put the wrong value to modify everything to black.

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