public void testModifyData() throws Exception {
ImageData originalData = getImageData(Fixture.IMAGE1);
Image image = ResourceFactory.findImage(originalData);
cache.putImageData(image, originalData);
ImageData copyData1 = cache.getImageData(image);
assertNotSame(originalData, copyData1);
assertEqualsImageData(originalData, copyData1);
// modify original data
originalData.setPixel(0, 0, 23);
ImageData copyData2 = cache.getImageData(image);
assertNotSame(copyData1, copyData2);
assertEqualsImageData(copyData1, copyData2);
}
@Override
public Image run(Image input, int imageType) {
ImageData inData = input.getImageData(); // Die echten Bilddaten sind hier drin
// RGB zu YUV Umwandlungsmatrix
// double[] linear_conversion = {
// 0.2126, 0.7152, 0.0722,
// -0.09991, -0.33609, 0.436,
// 0.615, -0.55861, -0.05639
// };
double[] linear_conversion = {0.299, 0.587, 0.114, -0.147, -0.289, 0.436, 0.615, -0.515, -0.1};
Matrix m = new Matrix(3, 3, linear_conversion);
// YUV zu RGB Umwandlungmatrix (das Inverse)
// double[] inv_linear_conversion = {
// 1.0000, 0.0000, 1.28033,
// 1.0000, -0.21482, -0.38059,
// 1.0000, 2.12798, -0.0005
// };
double[] inv_linear_conversion = {
1.0000, 0.0000, 1.1398, 1.0000, -0.3946, -0.5805, 1.0000, 2.0320, -0.0005
};
Matrix minv = new Matrix(3, 3, inv_linear_conversion);
for (int v = 0; v < inData.height; v++) {
for (int u = 0; u < inData.width; u++) {
int pixel = inData.getPixel(u, v);
RGB rgb = inData.palette.getRGB(pixel);
// Variante mit Farbwerte U und V von YUV auf 0 setzen
Vector r = new Vector(rgb.red, rgb.green, rgb.blue);
double[] y = m.times(r).getV();
y[2] = 0;
y[1] = 0;
r = minv.times(new Vector(y));
rgb.red = (int) r.x(1);
rgb.green = (int) r.x(2);
rgb.blue = (int) r.x(3);
if (rgb.red < 0) rgb.red = 0;
else if (rgb.red > 255) rgb.red = 255;
if (rgb.green < 0) rgb.green = 0;
else if (rgb.green > 255) rgb.green = 255;
if (rgb.blue < 0) rgb.blue = 0;
else if (rgb.blue > 255) rgb.blue = 255;
// Variante mit der Sättigung auf 0 gesetzt (schlechter)
// float[] hsb = inData.palette.getRGB(pixel).getHSB();
//
// hsb[1] = 0; //Sättigung auf 0 setzen
//
// Color c = new Color(Color.HSBtoRGB(hsb[0],hsb[1],hsb[2]));
// RGB rgb = new RGB(0,0,0);
// rgb.red = c.getRed();
// rgb.green = c.getGreen();
// rgb.blue = c.getBlue();
inData.setPixel(u, v, inData.palette.getPixel(rgb));
}
}
return new Image(input.getDevice(), inData);
}