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Which of the following transformations is particularly well suited for enhancing an image with white and gray detail embedded in dark regions of the image, especially when there is more black area in the image.

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Which of the following transformations is particularly well suited for enhancing an image with white and gray detail embedded in dark regions of the image, especially when there is more black area in the image.

(a) Log transformations

(b) Power-law transformations

(c) Negative transformations

(d) None of the mentioned

The question was asked in an online interview.

Query is from Basic Grey Level Transformation in chapter Image Enhancement of Digital Image Processing

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Correct answer is (c) Negative transformations

Explanation: Negative transformation reverses the intensity levels in the image and produces an equivalent photographic negative. So, well suited for the above given condition.

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