Java Utililty Methods BufferedImage Histogram

int[] histogram = new int[256 / bucketSize];
for (int y = 0; y < bitmap.getHeight(); y++) {
    for (int x = 0; x < bitmap.getWidth(); x++) {
        Color c = new Color(bitmap.getRGB(x, y));
        int grey = (c.getRed() + c.getBlue() + c.getGreen()) / 3;
        int index = grey / bucketSize;
        histogram[index]++;
return histogram;

int[][] histogram = new int[3][256];
WritableRaster raster = bufferedImage.getRaster();
int pixel[] = new int[4];
for (int y = 0; y < raster.getHeight(); y++) {
    for (int x = 0; x < raster.getWidth(); x++) {
        raster.getPixel(x, y, pixel);
        for (int i = 0; i < 3; i++) {
            histogram[i][pixel[i]]++;
...

int[][] result;
int width;
int height;
int x;
int y;
int[] split;
int i;
if (gray) {
...

int[] rhistogram = new int[256];
int[] ghistogram = new int[256];
int[] bhistogram = new int[256];
for (int i = 0; i < rhistogram.length; i++)
    rhistogram[i] = ghistogram[i] = bhistogram[i] = 0;
for (int j = 0; j < input.getHeight(); j++) {
    for (int i = 0; i < input.getWidth(); i++) {
        int rgb = input.getRGB(i, j);
...

int[] histogram = new int[256];
for (int i = 0; i < histogram.length; i++) {
    histogram[i] = 0;
for (int i = 0; i < input.getWidth(); i++) {
    for (int j = 0; j < input.getHeight(); j++) {
        int red = new Color(input.getRGB(i, j)).getRed();
        histogram[red]++;
...

int result = Integer.MAX_VALUE;
int filter = 10;
int sqrtSectors = 3;
Rectangle[] aSectors = buildSectors(a, sqrtSectors);
Rectangle[] bSectors = buildSectors(b, sqrtSectors);
int[][] aAverages = buildPixelAverages(a, aSectors);
int[][] bAverages = buildPixelAverages(b, bSectors);
int totalDelta = 0;
...