Which technique can be used to improve the visual effect of the image?

Posted by: Pdfprep Category: H13-321-ENU Tags: , ,

The bright part of an image is too bright and the dark part is too dark.

Which technique can be used to improve the visual effect of the image? (Single choice)
A . Reverse
B . Gamma correction
C . Grayscale stretching
D . Grayscale compression

Answer: B

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