/**
* Determines if given photo contains night picture.
*
* @param photo The photo to analyze.
* @return True if the given photo contains night picture, false otherwise.
*/
public static boolean isNight(Photo photo) {
BufferedImage img = ((SImage) photo.sImage).toBufferedImage();
Random rand = new Random();
int x, y;
double souc = 0;
for (int i = 0; i < settingsManager.getRandomPhotoSamplesNumber(); i++) {
x = rand.nextInt(img.getWidth());
y = rand.nextInt(img.getHeight());
souc += argbToIntensity(img.getRGB(x, y));
}
double val = (souc / settingsManager.getRandomPhotoSamplesNumber());
return val < settingsManager.getNightTreshold();
}
