How to use the output variable imshow(imIDX,[]) as input for another Process?

am trying to combine clustering segmentation with other image segmentation algorithm, but i stack at accessing the clustered image, when i try to use imIDX as a variable, figure will displayed without any image(PFA).

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Answer 1

[Walter Roberson]

Use

scaled_imIDX = mat2gray(imIDX);

This will give you an array that corresponds to the array imshow() with the [] option would use to display the data.