Android Utililty Methods Bitmap Color Change

List of utility methods to do Bitmap Color Change

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Description

The list of methods to do Bitmap Color Change are organized into topic(s).

Method

BitmapadjustedContrast(Bitmap src, double value)
Adjust contrast of bitmap. 
int width = src.getWidth();
int height = src.getHeight();
Bitmap bmOut = Bitmap.createBitmap(width, height, src.getConfig());
Canvas c = new Canvas();
c.setBitmap(bmOut);
c.drawBitmap(src, 0, 0, new Paint(Color.BLACK));
int A, R, G, B;
int pixel;
...
Bitmapboost(Bitmap src)
Boost color intensity. 
int width = src.getWidth();
int height = src.getHeight();
final float factor = 1.3f;
Bitmap bmOut = Bitmap.createBitmap(width, height, src.getConfig());
int[] pix = new int[width * height];
src.getPixels(pix, 0, width, 0, 0, width, height);
int A, R, G, B;
int i = 0;
...
Bitmapbrightness(Bitmap src, int value)
Brightness. 
int width = src.getWidth();
int height = src.getHeight();
Bitmap bmOut = Bitmap.createBitmap(width, height, src.getConfig());
int A, R, G, B;
int pixel;
for (int x = 0; x < width; ++x) {
    for (int y = 0; y < height; ++y) {
        pixel = src.getPixel(x, y);
...
BitmapchangeHue(Bitmap bmp, int hue, int width, int height)
Change hue of bitmap. 
if (bmp == null) {
    return null;
Bitmap bitmap = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(),
        bmp.getHeight());
if ((hue < 0) || (hue > 360)) {
    return null;
int size = width * height;
int[] all_pixels = new int[size];
int top = 0;
int left = 0;
int offset = 0;
int stride = width;
bitmap.getPixels(all_pixels, offset, stride, top, left, width,
        height);
int pixel = 0;
int alpha = 0;
float[] hsv = new float[3];
for (int i = 0; i < size; i++) {
    pixel = all_pixels[i];
    alpha = Color.alpha(pixel);
    Color.colorToHSV(pixel, hsv);
    hsv[0] = hue;
    hsv[1] = 0.2f;
    all_pixels[i] = Color.HSVToColor(alpha, hsv);
bitmap.setPixels(all_pixels, offset, stride, top, left, width,
        height);
return bitmap;
BitmapcreateAnaglyphBitmap(Bitmap bitmap)
create Anaglyph Bitmap 
int width = bitmap.getWidth();
int height = bitmap.getHeight();
float scaleWidth = 2f;
float scaleHeight = 1f;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
Bitmap leftBitmap = Bitmap.createBitmap(bitmap, 0, 0, width / 2,
        height, matrix, true);
...
BitmapcreateSaturatedBitmap(final Bitmap bitmap)
Used to remove the saturation (if saturate) and slightly enlarge a Bitmap . 
if (bitmap == null) {
    return null;
final Bitmap mBitmap = Bitmap.createBitmap(bitmap.getWidth(),
        bitmap.getHeight(), Bitmap.Config.RGB_565);
final Canvas mCanvas = new Canvas(mBitmap);
final Paint mPaint = new Paint();
final ColorMatrix mColorMatrix = new ColorMatrix();
...
voiddilate(Bitmap bitmap, int[][] se)
dilate 
dilate(bitmap.copy(bitmap.getConfig(), false), bitmap, se);
intdilate(Bitmap source, Bitmap target, int[][] se)
dilate 
int hlen = source.getWidth(), vlen = source.getHeight(), offsetX = (int) -Math
        .floor(se[0].length / 2), offsetY = (int) -Math
        .floor(se.length / 2);
int toReturn = 0;
for (int i = 0; i < vlen; i++) {
    for (int j = 0; j < hlen; j++) {
        if ((source.getPixel(j, i) & 0xff) > 0) {
            kernelDilate(j, i, hlen, vlen, target, se, offsetX,
...
BitmapdoBrightness(Bitmap src, int value)
Adjust brightness of bitmap. 
int width = src.getWidth();
int height = src.getHeight();
Bitmap bmOut = Bitmap.createBitmap(width, height, src.getConfig());
int A, R, G, B;
int pixel;
for (int x = 0; x < width; ++x) {
    for (int y = 0; y < height; ++y) {
        pixel = src.getPixel(x, y);
...
voiderosion(Bitmap bitmap, int[][] se)
erosion 
int hlen = bitmap.getWidth(), vlen = bitmap.getHeight();
for (int i = 0; i < vlen; i++) {
    for (int j = 0; j < hlen; j++) {
        bitmap.setPixel(
                j,
                i,
                kernelMatch(j, i, hlen, vlen, bitmap, se) ? 0xffffffff
                        : 0xff000000);
...