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double coefficientRed,
double coefficientGreen,
double coefficientBlue)
(coeffRed * red) + (coeffBlue * blue) + (coeffGreen * Green)
There is no /3 in this method
Values are clipped, so if the total is above 255, only 255 is written
1, 0, 0 would generate a greyscale on the unchanged red channel
0, 0, 2 would generate a greyscale on a doubled blue channel
Negative and decimal coefficients are supported
0.8, 0.1, -0.2 as a random example would be valid if the situation calls for it
int threshold) As an example, the red kiosks in Pyro do well with a threshold of 155
It dilates the font of an image in two steps This seems to work best for kiosks that need dilation for portions of their text.
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Will help with #96 |
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Implements makeWeightedGreyscaleCopy in ImageUtil. This is needed for Pyro kiosks that require a greyscale image based only on the red channel. This implementation lets similar tasks be performed using any combination of three channels to meet any future kiosk needs.