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

BufferedImagemakeOpaque(BufferedImage img, Color col)
make Opaque 
return convertImage(img, BufferedImage.TYPE_BYTE_INDEXED, col);
PolygonMakePoly(BufferedImage spr, int d, int angle, int baseX, int baseY)
Create a polygon based on a image. 
Polygon p = new Polygon();
int w = spr.getWidth(null);
int h = spr.getHeight(null);
try {
    int[] vertex_x = new int[255], vertex_y = new int[255], vertex_k = new int[255];
    int numPoints = 0, tx = 0, ty = 0, fy = -1, lx = 0, ly = 0;
    vertex_x[0] = 0;
    vertex_y[0] = 0;
...
BufferedImagemakeTintedCopy(BufferedImage bi, Color tint)
make Tinted Copy 
GraphicsConfiguration gc = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice()
        .getDefaultConfiguration();
BufferedImage tinted = gc.createCompatibleImage(bi.getWidth(), bi.getHeight(), Transparency.TRANSLUCENT);
for (int y = 0; y < bi.getHeight(); y++) {
    for (int x = 0; x < bi.getWidth(); x++) {
        int rgb = bi.getRGB(x, y);
        if (rgb != 0)
            tinted.setRGB(x, y, tint.getRGB());
...
BufferedImagemarkImageBorders(final BufferedImage img, final int startW, final int startH)
Fully marks the bottom and right borders of an image transparent (transparent white). 
final BufferedImage copy = copyImage(img);
final Color markTransparentWhite = new Color(255, 255, 255, 0);
final Graphics2D g = copy.createGraphics();
g.setColor(markTransparentWhite);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_IN, 1.0f));
if (startW < copy.getWidth()) {
    g.fillRect(startW, 0, copy.getWidth() - startW, copy.getHeight());
if (startH < copy.getHeight()) {
    g.fillRect(0, startH, copy.getWidth(), copy.getHeight() - startH);
g.dispose();
return copy;
BufferedImagematBytesToBufferedImage(byte[] data, int cols, int rows, int type)
mat Bytes To Buffered Image 
int bufferedType = 10;
switch (type) {
case 0:
    bufferedType = BufferedImage.TYPE_BYTE_GRAY;
    break;
case 16:
    bufferedType = BufferedImage.TYPE_3BYTE_BGR;
    break;
...
BufferedImagematte(BufferedImage image, int top, int bottom, int left, int right, Color bg)
Add a matte border around the image 
int imageWidth = image.getWidth(null);
int imageHeight = image.getHeight(null);
BufferedImage newImage = new BufferedImage(imageWidth + left + right, imageHeight + top + bottom,
        getImageType(image));
Graphics newG = newImage.getGraphics();
newG.setColor(bg);
newG.fillRect(0, 0, newImage.getWidth(null), newImage.getHeight(null));
newG.drawImage(image, left, top, null);
...
BufferedImagemirror(final BufferedImage image, final boolean horizontal)
mirror 
int width = image.getWidth();
int height = image.getHeight();
BufferedImage output = new BufferedImage(image.getHeight(), image.getWidth(), image.getType());
for (int i = 0; i < width; i++) {
    for (int j = 0; j < image.getHeight(); j++) {
        if (horizontal) {
            output.setRGB(width - i - 1, j, image.getRGB(i, j));
        } else {
...
BufferedImagenewOptimizedImageLike(GraphicsConfiguration destination, BufferedImage img)
new Optimized Image Like 
return newOptimizedImage(destination, img.getWidth(), img.getHeight(), img.getColorModel().hasAlpha(),
        img.getTransparency());
BufferedImagenewSubimage(BufferedImage src, int x, int y, int w, int h)
Returns an independent subimage of the given main image. 
BufferedImage bimg = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
int[] tmp = new int[w * h];
src.getRGB(x, y, w, h, tmp, 0, w);
bimg.setRGB(0, 0, w, h, tmp, 0, w);
return bimg;
intnNeighbors(BufferedImage image, int i, int j)
n Neighbors 
int res = 0;
int col = image.getRGB(i, j);
for (int di = -1; di <= 1; di++)
    for (int dj = -1; dj <= 1; dj++)
        if (di != 0 || dj != 0) {
            int x = i + di, y = j + dj;
            if (x < 0 || x >= image.getWidth() || y < 0 || y >= image.getHeight())
                continue;
...