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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions
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Task/Grayscale-image/Java/grayscale-image.java Normal file
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void convertToGrayscale(final BufferedImage image){
for(int i=0; i<image.getWidth(); i++){
for(int j=0; j<image.getHeight(); j++){
int color = image.getRGB(i,j);
int alpha = (color >> 24) & 255;
int red = (color >> 16) & 255;
int green = (color >> 8) & 255;
int blue = (color) & 255;
final int lum = (int)(0.2126 * red + 0.7152 * green + 0.0722 * blue);
alpha = (alpha << 24);
red = (lum << 16);
green = (lum << 8);
blue = lum;
color = alpha + red + green + blue;
image.setRGB(i,j,color);
}
}
}