Which of the following is/ are a generalized form of unsharp masking?(a) Lowpass filtering(b) High-boost filtering(c) Emphasis filtering(d) All of the mentionedThe question was asked in an international level competition.Question is from Unsharp Masking, High-boost filtering and Emphasis Filtering topic in portion Intensity Transformations and Spatial Filtering of Digital Image Processing

Which of the following is/ are a generalized form of unsharp masking?(

1.	Which of the following is/ are a generalized form of unsharp masking?(a) Lowpass filtering(b) High-boost filtering(c) Emphasis filtering(d) All of the mentionedThe question was asked in an international level competition.Question is from Unsharp Masking, High-boost filtering and Emphasis Filtering topic in portion Intensity Transformations and Spatial Filtering of Digital Image Processing
Answer» Right answer is (b) High-boost filtering To ELABORATE: UNSHARP masking is defined as “obtaining a highpass filtered image by SUBTRACTING from the given image a lowpass filtered version of itself” while high-boost filtering GENERALIZES it by multiplying the input image by a constant, say A≥1.

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