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Open AccessArticle

Individualised Halo-Free Gradient-Domain Colour Image Daltonisation

Department of Computer Science, Norwegian University of Science and Technology (NTNU), 2815 Gjøvik, Norway
J. Imaging 2020, 6(11), 116; https://doi.org/10.3390/jimaging6110116
Received: 7 October 2020 / Revised: 24 October 2020 / Accepted: 26 October 2020 / Published: 29 October 2020
Daltonisation refers to the recolouring of images such that details normally lost by colour vision deficient observers become visible. This comes at the cost of introducing artificial colours. In a previous work, we presented a gradient-domain colour image daltonisation method that outperformed previously known methods both in behavioural and psychometric experiments. In the present paper, we improve the method by (i) finding a good first estimate of the daltonised image, thus reducing the computational time significantly, and (ii) introducing local linear anisotropic diffusion, thus effectively removing the halo artefacts. The method uses a colour vision deficiency simulation algorithm as an ingredient, and can thus be applied for any colour vision deficiency, and can even be individualised if the exact individual colour vision is known. View Full-Text
Keywords: daltonisation; colour vision deficiencies; anisotropic diffusion daltonisation; colour vision deficiencies; anisotropic diffusion
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Farup, I. Individualised Halo-Free Gradient-Domain Colour Image Daltonisation. J. Imaging 2020, 6, 116.

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