public static Bitmap doFilter (Bitmap src) {
        int width, height;
        height = src.getHeight();
        width = src.getWidth();
        float[] transfMatrix = {
                1.5f, 0, 0, 0, 0,
                0, 1.5f, 0, 0, 0,
                0, 0, 1.5f, 0, 0,
                0, 0, 0, 1, 0};
        ColorMatrix cm = new ColorMatrix();
        cm.setSaturation(0f);
        cm.set(transfMatrix);
        ColorMatrixColorFilter cf = new ColorMatrixColorFilter(cm);
        Paint paint = new Paint();
        paint.setColorFilter(cf);
        Bitmap bmOut = Bitmap.createBitmap(src);
        Canvas c = new Canvas(bmOut);
        c.drawBitmap(bmOut, 0, 0, paint);
        return bmOut;

public static Bitmap doFilter (Bitmap src) {
        int width, height;
        height = src.getHeight();
        width = src.getWidth();
        float[] transfMatrix = {
                1.5f, 0, 0, 0, 0,
                0, 1.5f, 0, 0, 0,
                0, 0, 1.5f, 0, 0,
                0, 0, 0, 1, 0};
        ColorMatrix cm = new ColorMatrix();
        cm.setSaturation(0f);
        cm.set(transfMatrix);
        ColorMatrixColorFilter cf = new ColorMatrixColorFilter(cm);
        Paint paint = new Paint();
        paint.setColorFilter(cf);
        Bitmap bmOut = Bitmap.createBitmap(src, 0, (int)(height * 0.001), width, (int)(height * 0.999));
        Canvas c = new Canvas(bmOut);
        c.drawBitmap(bmOut, 0, 0, paint);
        return bmOut;