Abstract(s)
Os indivíduos de portadores de cromatopsia visual possuem certas limitações,
quer na visualização, quer na discriminação de algumas cores no mundo real. Estas
limitações reflectem-se também na percepção, por estes indivíduos, de cores
emitidas por qualquer tipo de ambiente gráfico.
Esta incapacidade visual poderá, de certa forma, ser prejudicial, na medida
em que, o portador deste tipo de limitação poderá não obter uma acessibilidade à
informação disponibilizada, nas mais variadas plataformas informáticas, tal como
pode um observador com visão normal das cores.
Existe, assim, desta forma, uma lacuna no que diz respeito a um tipo de conhecimento
ou de tecnologia que procure contornar estes aspectos fundamentais,
que poderão, portanto, contribuir para um melhoramento da qualidade de vida
de um indivíduo portador deste tipo de anomalia.
Por esta razão, e devido ao facto do estudo destas anomalias a nível informático
ser ínfimo, propõem-se, então, uma metodologia de alteração colorimétrica
em imagens digitais, assente na realização de um estudo intensivo e
rigoroso através de experiências, com observadores, em cenário tridimensional,
de forma a calcular o erro, ou desvio cromático em portadores de cromato psi a
visual. Estas experiências que foram efectuadas em cada tipo de cor primária
(RGB), sob a influência de dois tipos de iluminantes, de forma a tentar quantificar
e modelar a variação de percepção colorimétrica em indivíduos portadores
de cromatopsia visual.
Subjects with visual cromatopsia have certain limitations, on both vizualisation and discrimination of some real world colors. Those limitations are also clearly reflected in their perception of any kind of graphical environrnent radiated colors. This inability could be harrnful in some way, since the holder of such visual limitation may not get the sarne access, as an observer with normal color perception, to alI kinds of available information in several software platforms. A knowledge or technology of some kind seeking to circumvent those key aspects is missing, and such discover would contribute to improved quality of life on individuaIs with such conditions. For this reason, and since computational studies on these anomalies are minimal, we now propose a methodology for color correction in digital images based on the completion of experimental and both intensive and rigorous studies on subjects, on three-dimensional scenes, so that chromatic error or deviation in visual cromatopsia holders can be quantified. Those trials were conducted in each primary color channel (RGB) , in the presence of two different illuminants, to quantify and model color perception variation in visual cromatopsia holders.
Subjects with visual cromatopsia have certain limitations, on both vizualisation and discrimination of some real world colors. Those limitations are also clearly reflected in their perception of any kind of graphical environrnent radiated colors. This inability could be harrnful in some way, since the holder of such visual limitation may not get the sarne access, as an observer with normal color perception, to alI kinds of available information in several software platforms. A knowledge or technology of some kind seeking to circumvent those key aspects is missing, and such discover would contribute to improved quality of life on individuaIs with such conditions. For this reason, and since computational studies on these anomalies are minimal, we now propose a methodology for color correction in digital images based on the completion of experimental and both intensive and rigorous studies on subjects, on three-dimensional scenes, so that chromatic error or deviation in visual cromatopsia holders can be quantified. Those trials were conducted in each primary color channel (RGB) , in the presence of two different illuminants, to quantify and model color perception variation in visual cromatopsia holders.
Description
Keywords
Colorimetria Cromatopsia visual