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Which of the following transform produces a binary image after processing?(a) Contrast stretching(b) Gray-level slicing(c) All of the mentioned(d) None of the mentionedThis question was addressed to me during a job interview.My doubt stems from Piecewise-Linear Transformation Functions in chapter Intensity Transformations and Spatial Filtering of Digital Image Processing

Answer»

Right OPTION is (C) All of the mentioned

Easy explanation: The approach of gray-level SLICING “to give all gray level of a specific range high value and a low value to all other gray levels” PRODUCES a binary image.

One of the transformation in Contrast stretching darkens the value of R (input image gray-level) below m (some predefined gray-value) and brightens the value of r above m, giving a binary image as result.



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