Java tutorial
import java.awt.Color; import java.awt.Transparency; import java.awt.color.ColorSpace; import java.awt.image.ColorModel; import java.awt.image.ComponentColorModel; import java.awt.image.DataBuffer; public class ComponentTest { public static void main(String[] args) { ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB); ColorModel cm = new ComponentColorModel(cs, new int[] { 5, 6, 5 }, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE); Color fifty = new Color(cs, new float[] { 1.0f, 1.0f, 1.0f }, 0); float[] components = fifty.getComponents(null); System.out.print("Original normalized components: "); for (int i = 0; i < 3; i++) System.out.print(components[i] + " "); System.out.println(); int[] unnormalized = cm.getUnnormalizedComponents(components, 0, null, 0); System.out.print("Original unnormalized components: "); for (int i = 0; i < 3; i++) System.out.print(unnormalized[i] + " "); System.out.println(); Object pixel = cm.getDataElements(unnormalized, 0, (Object) null); System.out.print("Pixel samples: "); byte[] pixelBytes = (byte[]) pixel; for (int i = 0; i < 3; i++) System.out.print(pixelBytes[i] + " "); System.out.println(); unnormalized = cm.getComponents(pixel, null, 0); System.out.print("Derived unnormalized components: "); for (int i = 0; i < 3; i++) System.out.print(unnormalized[i] + " "); System.out.println(); components = cm.getNormalizedComponents(unnormalized, 0, null, 0); System.out.print("Derived normalized components: "); for (int i = 0; i < 3; i++) System.out.print(components[i] + " "); System.out.println(); } }