If unsharp masking can be implemented directly in frequency domain by using a composite filter: Hhp(u, v) = 1 Hlp(u, v), where Hlp(u, v) the transfer function of a lowpass filter. Then, the composite filter for High-boost filtering is __________

tHhb(u, v) = (A-1) Hhp(u, v), A is a constant

tHhb(u, v) = (A-1) + Hhp(u, v), A is a constant

If unsharp masking can be implemented directly in frequency domain by

1.	If unsharp masking can be implemented directly in frequency domain by using a composite filter: Hhp(u, v) = 1 Hlp(u, v), where Hlp(u, v) the transfer function of a lowpass filter. Then, the composite filter for High-boost filtering is __________
A.	tH<sub>hb</sub>(u, v) = 1 H<sub>hp</sub>(u, v)
B.	tH<sub>hb</sub>(u, v) = 1 + H<sub>hp</sub>(u, v)
C.	tH<sub>hb</sub>(u, v) = (A-1) H<sub>hp</sub>(u, v), A is a constant
D.	tH<sub>hb</sub>(u, v) = (A-1) + H<sub>hp</sub>(u, v), A is a constant
Answer» E.

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