Filtering the shadows from poorly illuminated photos

  • Authors:

  • Carlos A. B. Mello

  • Affiliations:

  • Federal University of Pernambuco, Recife, Brazil

  • Venue:
  • Proceedings of the 2010 ACM Symposium on Applied Computing
  • Year:
  • 2010

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Abstract

This paper presents a new algorithm for filtering shadowy photos degraded by uneven light condition. The dark photos are harder to use for face recognition or even an analysis of the scene. Corrections can be made using commercial tools as Photoshop™ but this is done manually and it requires a specialized user. We propose an automatic method which inproves the visibility of the scenes. This method is based on wavelet analysis but it uses different filters.