People with colour vision deficiency (CVD) may have difficulty recognising or discriminating
colours. To enhance their visual details, some methods have been developed to enhance
colour contrast. Recently, researchers realized the importance of preserving naturalness in
the processed images to avoid decreasing the quality of vision (QOV) and state-of-the-art
image recolouring methods succeeded in realising both contrast enhancement and
naturalness preservation by utilising optimisation model. However, the high computational …