Accommodating color blind computer users
However, many recoloring approaches have two major flaws. Many methods adopt an optimization process to determine the color mapping function.
This introduces large computational costs, and thus they can hardly be applied in real-world applications, especially in real-time video recoloring which typically requires each frame to be processed in less than 1/24 of a second.
Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.
A focus group is a form of qualitative research in which a group of people are asked about their perceptions, opinions, beliefs, and attitudes towards a product, service, concept, advertisement, idea, or packaging.
Many people who are color blind see it as "21", and those with total color blindness may not see any numbers.
Several research works have been dedicated to helping such users better perceive visual objects with color combinations and color differences that are difficult for those with colorblindness to detect.