Unsharp masking can be implemented directly in frequency domain by using a filter: Hhp(u, v) = 1 – Hlp(u, v), where Hlp(u, v) the transfer function of a lowpass filter. What kind of filter is Hhp(u, v)?

Unsharp masking can be implemented directly in frequency domain by us

1.	Unsharp masking can be implemented directly in frequency domain by using a filter: Hhp(u, v) = 1 – Hlp(u, v), where Hlp(u, v) the transfer function of a lowpass filter. What kind of filter is Hhp(u, v)?
A.	Composite filter
B.	M-derived filter
C.	Constant k filter
D.	None of the mentioned
Answer» B. M-derived filter

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