A Rational Unsharp Masking Technique

نویسندگان

  • Giovanni Ramponi
  • Andrea Polesel
چکیده

The linear Unsharp Masking technique used in image contrast enhancement is modiied in this paper, by introducing a control term expressed as a rational function of the local input data. In this way, noise ampliication is avoided and, at the same time, overshoot eeects on sharp edges are limited. Experimental results support the validity of the method, even as a preprocessor for interpolation systems.

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تاریخ انتشار 1998