Manipulating a colored image in matrix form in java

Question

I am working on a project related to colored image manipulation using JAVA.

I got to know the conversion of the colored image into a matrix using a getSample method of

Answer 1

You may be looking or java.awt.image.LookupOp, which uses a java.awt.image.LookupTable to modify bands en bloc. Several examples are cited here. The image below illustrates inversion:

short[] invert = new short[256];
for (int i = 0; i < 256; i++) {
    invert[i] = (short) (255 - i);
}
BufferedImageOp invertOp = new LookupOp(new ShortLookupTable(0, invert), null));
invertOp.filter(src, dst);