In frequency domain terminology, which of the following is defined as ‚Äö√Ñ√∂‚àö√ë‚àö‚à´obtaining a highpass filtered image by subtracting from the given image a lowpass filtered version of itself‚Äö√Ñ√∂‚àö√ë‚àöœÄ?

In frequency domain terminology, which of the following is defined as

1.	In frequency domain terminology, which of the following is defined as ‚Äö√Ñ√∂‚àö√ë‚àö‚à´obtaining a highpass filtered image by subtracting from the given image a lowpass filtered version of itself‚Äö√Ñ√∂‚àö√ë‚àöœÄ?
A.	Emphasis filtering
B.	Unsharp masking
C.	Butterworth filtering
D.	None of the mentioned
Answer» C. Butterworth filtering

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In frequency domain terminology, which of the following is defined as ‚Äö√Ñ√∂‚àö√ë‚àö‚à´obtaining a highpass filtered image by subtracting from the given image a lowpass filtered version of itself‚Äö√Ñ√∂‚àö√ë‚àöœÄ?

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