Achieving Perceptual Consistency of Contrast in Physical Images Viewed at Different Distances
F. Ayala Le Brun (TU Delft - Electrical Engineering, Mathematics and Computer Science)
B. Usta – Mentor (TU Delft - Computer Graphics and Visualisation)
E. Eisemann – Mentor (TU Delft - Computer Graphics and Visualisation)
M. Weinmann – Mentor (TU Delft - Computer Graphics and Visualisation)
Z. Erkin – Graduation committee member (TU Delft - Cyber Security)
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Abstract
According to the Contrast Sensitivity Function, the contrast of different spatial frequency elements of an image will be seen differently depending on distance. We propose a method for compensating for these differences by acting on an image's frequency representation and manipulating the magnitudes of the individual wave functions composing the image. We provide an open source implementation of the algorithm which can be used to process videos and images in real time.