This paper addresses the question of what can be said about the colours in images that is independent of illumination. We make two main assumptions: Firstly, the illumination can be characterised as Planckian (a realistic assumption for most real scenes). Secondly, the camera behaves as if it were equipped with narrow band sensors (true for a large number of cameras). The resulting physics-based method results in a transformation of the original colour image to a grey-scale one which does not vary with illumination. We give results showing invariance under a range of illumination conditions.
|Publication status||Published - Sep 2000|
|Event||The Eleventh British Machine Vision Conference - University of Bristol|
Duration: 11 Sep 2000 → 14 Sep 2000
|Conference||The Eleventh British Machine Vision Conference|
|City||University of Bristol|
|Period||11/09/00 → 14/09/00|