Error using entropy expected input number to be real.

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Mira mosad 2022-3-20

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https://ww2.mathworks.cn/matlabcentral/answers/1675984-error-using-entropy-expected-input-number-to-be-real

评论： Image Analyst 2022-3-21

The following error appears when applying an image enhancement code. The errors appears only with jpeg images. Could you please help me?Error using entropy expected input number to be real.

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Image Analyst 2022-3-20

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Evidently your input is not real. If it's complex, use real() to get the real part. If it's an integer, like uint8, use double() to cast the integer variable to double.