public static ColoredλImage производная(
ColoredλImage input_image, Rectangle input_image_dimentions) {
return (x, y) -> {
// Модули производных по x и y для красного канала
double Rx =
abs(input_image.valueAt(x + 1, y).red() - input_image.valueAt(x - 1, y).red()) / 2;
double Ry =
abs(input_image.valueAt(x, y + 1).red() - input_image.valueAt(x, y - 1).red()) / 2;
// для зелёного
double Gx =
abs(input_image.valueAt(x + 1, y).green() - input_image.valueAt(x - 1, y).green()) / 2;
double Gy =
abs(input_image.valueAt(x, y + 1).green() - input_image.valueAt(x, y - 1).green()) / 2;
// и для синего
double Bx =
abs(input_image.valueAt(x + 1, y).blue() - input_image.valueAt(x - 1, y).blue()) / 2;
double By =
abs(input_image.valueAt(x, y + 1).blue() - input_image.valueAt(x, y - 1).blue()) / 2;
double R = Rx + Ry;
double G = Gx + Gy;
double B = Bx + By;
return Colors.newColor((float) R, (float) G, (float) B);
};
}
private static ColoredλImage bright(ColoredλImage image_1) {
return (x, y) -> {
Color pixel = image_1.valueAt(x, y);
float multiplier = 8;
double R = pixel.red() * multiplier;
double G = pixel.green() * multiplier;
double B = pixel.blue() * multiplier;
if (R > 1) {
R = 1;
}
if (G > 1) {
G = 1;
}
if (B > 1) {
B = 1;
}
return Colors.newColor((float) R, (float) G, (float) B);
};
}