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What is the technique for a gray-level transformation function called, if the transformation would be to produce an image of higher contrast than the original by darkening the levels below some gray-level m and brightening the levels above m in the original image.

What is the technique for a gray-level transformation function called, if the transformation would be to produce an image of higher contrast than the original by darkening the levels below some gray-level m and brightening the levels above m in the original image. Correct Answer Contrast stretching

For a gray-level transformation function “s=T(r)”, where r and s are the gray-level of f(x, y) (input image) and g(x, y) (output image) respectively at any point (x, y). Then the technique, contrast stretching compresses the value of r below m by transformation function into a narrow range of s, towards black and brightens the value of r above m.

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2. Indifference curves are upward slopping
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8. Indifference curves are convex to the origin
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