In this paper an algorithm based on light radiation model and combined with the singularities of gradient descent and strengthening method to describe the light sources is presented, which gives a way to describe light sources. The entire model does not need any limitations for the light sources, which greatly enhanced the applicability of this model. The results show that it shows a great potential on the problem of quantifications for light sources and tracking. We think that this method would present a way that helps us to research in a different way and describe illuminant not only based on physical quantities, but also on the feature in the image. A light source tracking method is under experiment.
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