computação gráfica: aula3: cores psergio [email protected]
TRANSCRIPT
![Page 2: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/2.jpg)
Sistema Visual Humano
![Page 3: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/3.jpg)
Sistema Visual Humano
![Page 4: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/4.jpg)
Sistema Visual Humano
![Page 5: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/5.jpg)
Espectro Visível
![Page 6: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/6.jpg)
Espectro Visível
![Page 7: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/7.jpg)
Espectro Visível
![Page 8: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/8.jpg)
Sistemas de Cores Aditivo
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Sistemas RBG
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Sistemas RBG
![Page 11: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/11.jpg)
Sistemas HSV
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Sistemas HSV
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Sistemas HSI
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Histograma de Intensidades
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Histograma de Intensidades
![Page 16: Computação Gráfica: Aula3: Cores psergio psergio@fei.edu.br](https://reader035.vdocuments.site/reader035/viewer/2022062318/552fc10c497959413d8c414c/html5/thumbnails/16.jpg)
Histograma de Intensidades
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Histograma de Cores
Histograma RGB possui 256 x 256 x 256 = 16777216 entradas
Como trabalhar com Histogramas de Cores então?
Converter para HSV e quantizar as entradas
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Histograma de Cores
Exemplo: Supomos 18 valores de H, 3 valores S e tres valores de V, quantizados:
}2,1,0{
}2,1,0{
}17,..,0{
V
S
H
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Histograma de Cores
Quantas entradas tem o Histograma ?
Qual o índice da entrada para um pixel comValores H = 1; S = 0 e V = 0?