A Convolutional Neural Network for Pixelwise Illuminant Recovery in Colour and Spectral Images | IEEE Conference Publication | IEEE Xplore

A Convolutional Neural Network for Pixelwise Illuminant Recovery in Colour and Spectral Images


Abstract:

Here, we present a pixelwise illuminant recovery method for both, trichromatic and multi or hyperspectral images which employs a convolutional neural nettwork. The networ...Show More

Abstract:

Here, we present a pixelwise illuminant recovery method for both, trichromatic and multi or hyperspectral images which employs a convolutional neural nettwork. The network used here is based upon the simple, yet effective architecture employed by the CIFARIO-quick net[1]. The network is trained using a loss function which employs the angular difference between the target illuminant and the estimated one as the data term. The loss used here also includes a regularisation term which encourages smoothness in the spectral domain. Moreover, the network takes, at input, a tensor which is constructed making use of an image patch at different scales. This allows the network to predict the illuminant per-pixel using locally supported multiscale information. We illustrate the utility of our method for both, colour and hyperspectal illuminant recovery and compare our results against other techniques elsewhere in literature.
Date of Conference: 20-24 August 2018
Date Added to IEEE Xplore: 29 November 2018
ISBN Information:
Print on Demand(PoD) ISSN: 1051-4651
Conference Location: Beijing, China

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