Back to articles
Volume: 12 | Article ID: art00022
Fast Re-integration of Shadow Free Images.
  DOI :  10.2352/CIC.2004.12.1.art00022  Published OnlineJanuary 2004

In imaging applications, computation is often carried out in a derivative (gradient) domain. For example, we can attenuate small image differences by thresholding the gradient and then reintegrate. Unfortunately, the reintegration is an expensive task. Reintegration is often carried out in 2D (usually using 2D Fourier transform) or through multiple 1D paths as in Retinex. In this paper, we show that using a small number of non-random paths, each of which is a tour the size of the image, is an effective and fast method for reintegration.We apply our method to the problem of reintegrating a shadow free gradient derivative image. Results are competitive with those obtained using 2D methods. Yet, the reintegration presented here is an order of magnitude quicker.

Subject Areas :
Views 6
Downloads 1
 articleview.views 6
 articleview.downloads 1
  Cite this article 

Graham D. Finlayson, Clément Fredembach, "Fast Re-integration of Shadow Free Proc. IS&T 12th Color and Imaging Conf.,  2004,  pp 117 - 122,

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 2004
Color and Imaging Conference
color imaging conf
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA