Question: The power-law transformation is given as: s = cr?, c and ? are positive constants, and r is the gray-level of image before processing and s after processing. Then, for what value of c and ? does power-law transformation becomes identity transformation?
Options
A : c = 1 and ? < 1
B : c = 1 and ? > 1
C : c = -1 and ? = 0
D : c = ? = 1
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