Answers for "contrast adjustment formula"

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contrast adjustment formula

factor = (259 * (contrast + 255)) / (255 * (259 - contrast))
colour = GetPixelColour(x, y)
newRed   = Truncate(factor * (Red(colour)   - 128) + 128)
newGreen = Truncate(factor * (Green(colour) - 128) + 128)
newBlue  = Truncate(factor * (Blue(colour)  - 128) + 128)
PutPixelColour(x, y) = RGB(newRed, newGreen, newBlue)

Posted by: Guest on January-07-2021

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