Image Sensor Modeling: Noise and Linear Transformation Impacts on the Color Gamut

Linear transformations are widely used in the color science. Linear transformation can not ideally map the source and destination color matching functions and this issue induces some errors in the process of conversion. This error is usually deemed negligible for a noise-free system. However, in practice, imaging devices, displays, and printers employ linear transformations to move between color spaces and at the same time they are subject to noise which might magnify the linear transformation errors. The induced error by this phenomenon can bring about colorcasts and hampering the image quality. In this study, the effects of noise and linear transformation on the colorgamut are investigated. In this regard, a typical image sensor is modelled and employed for this study. A detailed model of noise is considered in the process of implementing the image sensor model to guarantee the precision of the results. Several experiments have been performed over the implemented framework and the results show that the imperfections of linear transformation combined with the image sensor noise shrinks the gamut area of output images.