Java Utililty Methods BufferedImage Operation

List of utility methods to do BufferedImage Operation

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Description

The list of methods to do BufferedImage Operation are organized into topic(s).

Method

BufferedImagefadeImageByShape(BufferedImage bimg, Shape arbshape, double alpha, int rule)
fade Image By Shape 
int ht = bimg.getHeight(), wd = bimg.getWidth();
BufferedImage bimgnew = new BufferedImage(wd, ht, COLORTYPE);
Graphics2D g2d = (Graphics2D) bimgnew.createGraphics();
if (arbshape != null)
    g2d.setClip(arbshape);
AlphaComposite ac = AlphaComposite.getInstance(rule, (float) alpha);
g2d.setComposite(ac);
g2d.drawImage(bimg, 0, 0, null);
...
voidfadeImages(BufferedImage source1, BufferedImage source2, BufferedImage target, int relX, int targetX)
fade Images 
int pixel1, pixel2, newPixel;
double f;
int r1, g1, b1, r2, g2, b2;
byte newR, newG, newB;
ColorModel cm = source1.getColorModel();
for (int x = relX; x < source1.getWidth(); x++) {
    f = linearF(x, relX, source1.getWidth());
    for (int y = 0; y < source1.getHeight(); y++) {
...
BufferedImagefakeAOI(final BufferedImage pImage, final Rectangle pSourceRegion)
fake AOI 
if (pImage == null) {
    return null;
if (pSourceRegion != null) {
    if (pSourceRegion.x != 0 || pSourceRegion.y != 0 || pSourceRegion.width != pImage.getWidth()
            || pSourceRegion.height != pImage.getHeight()) {
        return pImage.getSubimage(pSourceRegion.x, pSourceRegion.y, pSourceRegion.width,
                pSourceRegion.height);
...
doublefindavg(BufferedImage bimg)
findavg 
double avg = 0;
int avgarry[] = { 0, 32, 64, 128, 160, 192, 224, 255 };
int max = 0;
int maxCols = bimg.getWidth();
int maxRows = bimg.getHeight();
int[][][] pixel_rgb = BufferedImagetoPixel3DRGB(bimg);
for (int row = 0; row < maxRows; row++) {
    for (int col = 0; col < maxCols; col++) {
...
PointfindColor(BufferedImage image, int startX, int startY, int dirX, int dirY, int colorIndex)
find Color 
int curX = startX;
int curY = startY;
int[] pixel = new int[1];
Raster r = image.getRaster();
do {
    r.getPixel(curX, curY, pixel);
    if (pixel[0] == colorIndex) {
        return new Point(curX, curY);
...
BufferedImagefindDifference(BufferedImage img2, BufferedImage img1)
find Difference 
BufferedImage img = new BufferedImage(img2.getWidth(), img2.getHeight(), img2.getType());
Graphics2D g2d = img.createGraphics();
Raster data = img.getData();
for (int x = data.getMinX(); x < data.getWidth(); x++) {
    for (int y = data.getMinY(); y < data.getHeight(); y++) {
        if ((img2.getRGB(x, y) >> 24) == 0x00 && (img1.getRGB(x, y) >> 24) != 0x00) {
            g2d.setColor(new Color(img1.getRGB(x, y)));
            g2d.drawRect(x, y, 1, 1);
...
ColorfindDominantColor(BufferedImage paramBufferedImage)
find Dominant Color 
return findDominantColor(paramBufferedImage, false, -1);
ColorModelfindLegacyColorModel(BufferedImage image)
find Legacy Color Model 
ColorModel sourceColorModel = image.getColorModel();
boolean inColor = (sourceColorModel.getColorSpace().getType() != ColorSpace.TYPE_GRAY);
boolean hasAlpha = sourceColorModel.hasAlpha();
if (inColor) {
    if (hasAlpha) {
        return COLOR_MODEL_RGBA;
    } else {
        return COLOR_MODEL_RGB;
...
int[]findLegendLH(BufferedImage bufferedImage)
This find the low and high pixels with the legend (assuming the legend is near the bottom and is along the left edge, and spans the width of the image). 
int black = 0xFF000000;
int height = bufferedImage.getHeight();
int lh[] = new int[] { 0, 0 };
for (int y = height - 1; y >= 0; y--) {
    if (bufferedImage.getRGB(0, y) == black) {
        lh[1] = y;
        break;
for (int y = lh[1] - 1; y >= 0; y--) {
    if (bufferedImage.getRGB(0, y) != black) {
        lh[0] = y + 1;
        break;
return lh;
AffineTransformfindTranslation(AffineTransform at, BufferedImage bi)
find Translation 
Point2D p2din, p2dout;
p2din = new Point2D.Double(0.0, 0.0);
p2dout = at.transform(p2din, null);
double ytrans = p2dout.getY();
p2din = new Point2D.Double(0, bi.getHeight());
p2dout = at.transform(p2din, null);
double xtrans = p2dout.getX();
AffineTransform tat = new AffineTransform();
...