How can I generate Gabor patterns with specified contrasts and save them as pictures?

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G GK 2015-12-22

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https://ww2.mathworks.cn/matlabcentral/answers/261254-how-can-i-generate-gabor-patterns-with-specified-contrasts-and-save-them-as-pictures

评论： Ralph Andrews 2020-5-1

I need to create pictures with a specific Gabor pattern, with different levels of contrast - from 0% to 100%.

I know there is a "Gabor" function in Matlab, but I did not find a way to define the Gabor's contrast.

I know there is also a PsychToolbox function that creates a Gabor texture on the screen (Screen('DrawTexture', windowPtr, gaborid...), but I do not need to present the Gabors on screen, I need to save bitmap pictures, and I do not know how to capture pictures presented on a running PsychToolbox screen (so a function\code that captures the screen and saves it would be appreciated as well).

Thank you! Genie