Sharpness enhancement

Details Sharpness enhancement Sharpness enhancement

2005-01-25

2005-01-25

Mehta, Bhavesh M. (Department: 2625)

Image analysis

Image enhancement or restoration

Image filter

C358S532000

Reexamination Certificate

active

06847738

ABSTRACT:
In a method of sharpness enhancement, an input signal (s) is filtered (HLHP, VLHP) to obtain a filtered signal (zx, zy), the filtered signal is multiplied (M2, M3) by a controllable fraction (cx, cy) to obtain multiplied signals, and the multiplied signals are added (A2) to the input signal (s). The controllable fraction (cx, cy) is generated by a non-linear function (HCF, VCF).

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