Revisiting and Optimising a CNN Colour Constancy Method for Multi-Illuminant Estimation

The aim of colour constancy is to discount the effect scene illumination from image colours and restore objects as captured under a ‘white’ illuminant. For majority methods, first step estimate illuminant colour. Generally, it assumed that uniform in scene. However, real world scenes have multiple illuminants, like sunlight spot lights all together one We present this paper simple yet very effective framework using deep CNN-based method use illuminants for constancy. Our approach works well both multi single cases. output CNN region-wise map which smoothed divided out perform we propose outperforms other recent state art methods has promising visual results.