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Homomorphic Filter implementation for Openframeworks using ofxCv

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bemoregt/gpHomomorphicFilter

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ofxHomomorphicF

Spatial Domain Homomorphic Filter for Openframeworks using ofxCv

HMF example

HMF example2

Algorithm

  • Homomorphic Filter is a kind of Cepstral Technics of image.
  • Ambient light has Low frequency information. But, Object light has Higher frequency info.
  • Logarithmic of Power spectrum is separate two above informations and Low Stop Filtering.

How To

  • Move your mouse horizontally to change Alpha param in realtime.
  • Move your mouse verticallyl to change Beta param in realtime.

Dependency

  • OpenFrameworks 0.10.1
  • ofxCv
  • ofxOpenCv
  • ofxGUI
  • XCode 10.12.x
  • OSX Mojave

Next Plan

  • FFT based Homomorphic Filtering
  • Realtime WebCam Homomorphic Filtering

Reference