Example usage for android.graphics Bitmap getPixels

Introduction

In this page you can find the example usage for android.graphics Bitmap getPixels.

Prototype

public void getPixels(@ColorInt int[] pixels, int offset, int stride, int x, int y, int width, int height) 

Source Link

Document

Returns in pixels[] a copy of the data in the bitmap.

Usage

From source file:Main.java

/**
 * Fills the bitmap's pixels of the specified Color to transparency.
 * /*from ww  w.j a v  a 2 s  .  c om*/
 * @param aBitmap bitmap to process
 * @param aColor color to fill
 * @return bmp
 */
@SuppressLint("NewApi")
public static Bitmap eraseBG(Bitmap aBitmap, int aColor) {
    int width = aBitmap.getWidth();
    int height = aBitmap.getHeight();
    Bitmap b = aBitmap.copy(Config.ARGB_8888, true);
    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB_MR1) {
        b.setHasAlpha(true);
    }

    int[] pixels = new int[width * height];
    aBitmap.getPixels(pixels, 0, width, 0, 0, width, height);

    for (int i = 0; i < width * height; i++) {
        if (pixels[i] == aColor) {
            pixels[i] = 0;
        }
    }

    b.setPixels(pixels, 0, width, 0, 0, width, height);

    return b;
}

---

From source file:Main.java

/**
 * Apply the given tint color to the transformation map.
 * @param transformationMap A bitmap representing the transformation map.
 * @param tintColor Tint color to be applied.
 * @return A bitmap with the with the tint color set.
 *///from   w w w  .  j  a  v a 2  s  . c o m
public static Bitmap processTintTransformationMap(Bitmap transformationMap, int tintColor) {
    // tint color
    int[] t = new int[] { Color.red(tintColor), Color.green(tintColor), Color.blue(tintColor) };

    int width = transformationMap.getWidth();
    int height = transformationMap.getHeight();
    int[] pixels = new int[width * height];
    transformationMap.getPixels(pixels, 0, width, 0, 0, width, height);

    float[] transformation = new float[2];

    for (int i = 0; i < pixels.length; i++) {
        int color = pixels[i];
        int alpha = Color.alpha(color);
        transformation[0] = Color.red(color) / 255f;
        transformation[1] = Color.green(color) / 255f;
        pixels[i] = applyTransformation(t, alpha, transformation);
    }
    return Bitmap.createBitmap(pixels, width, height, Bitmap.Config.ARGB_8888);
}

---

From source file:Main.java

public static Bitmap handleImageNegative(Bitmap bm) {
    int width = bm.getWidth();
    int height = bm.getHeight();
    int color;//from   ww  w .j ava  2  s  . c  o m
    int r, g, b, a;
    Bitmap bmp = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];
    bm.getPixels(oldPx, 0, width, 0, 0, width, height);
    for (int i = 0; i < width * height; i++) {
        color = oldPx[i];
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);
        a = Color.alpha(color);

        r = 255 - r;
        g = 255 - g;
        b = 255 - b;
        if (r > 255) {
            r = 255;
        } else if (r < 0) {
            r = 0;
        }
        if (g > 255) {
            g = 255;
        } else if (g < 0) {
            g = 0;
        }
        if (b > 255) {
            b = 255;
        } else if (b < 0) {
            b = 0;
        }
        newPx[i] = Color.argb(a, r, g, b);
    }
    bmp.setPixels(newPx, 0, width, 0, 0, width, height);
    return bmp;

}

---

From source file:Main.java

public static int getDominantColor(Bitmap bitmap) {
    if (null == bitmap)
        return Color.TRANSPARENT;

    int redBucket = 0;
    int greenBucket = 0;
    int blueBucket = 0;
    int alphaBucket = 0;

    boolean hasAlpha = bitmap.hasAlpha();
    int pixelCount = bitmap.getWidth() * bitmap.getHeight();
    int[] pixels = new int[pixelCount];
    bitmap.getPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());

    for (int y = 0, h = bitmap.getHeight(); y < h; y++) {
        for (int x = 0, w = bitmap.getWidth(); x < w; x++) {
            int color = pixels[x + y * w]; // x + y * barHeight
            redBucket += (color >> 16) & 0xFF; // Color.red
            greenBucket += (color >> 8) & 0xFF; // Color.greed
            blueBucket += (color & 0xFF); // Color.blue
            if (hasAlpha)
                alphaBucket += (color >>> 24); // Color.alpha
        }/*  w ww . ja v a2 s.c  o  m*/
    }

    return Color.argb((hasAlpha) ? (alphaBucket / pixelCount) : 255, redBucket / pixelCount,
            greenBucket / pixelCount, blueBucket / pixelCount);
}

---

From source file:Main.java

public static Bitmap handleImagePixelsOldPhoto(Bitmap bm) {
    Bitmap bmp = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
    int width = bm.getWidth();
    int height = bm.getHeight();
    int color = 0;
    int r, g, b, a, r1, g1, b1;

    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];

    bm.getPixels(oldPx, 0, bm.getWidth(), 0, 0, width, height);
    for (int i = 0; i < width * height; i++) {
        color = oldPx[i];//from  ww w  . j ava  2 s  . c om
        a = Color.alpha(color);
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);

        r1 = (int) (0.393 * r + 0.769 * g + 0.189 * b);
        g1 = (int) (0.349 * r + 0.686 * g + 0.168 * b);
        b1 = (int) (0.272 * r + 0.534 * g + 0.131 * b);

        if (r1 > 255) {
            r1 = 255;
        }
        if (g1 > 255) {
            g1 = 255;
        }
        if (b1 > 255) {
            b1 = 255;
        }

        newPx[i] = Color.argb(a, r1, g1, b1);
    }
    bmp.setPixels(newPx, 0, width, 0, 0, width, height);
    return bmp;
}

---

From source file:Main.java

public static Bitmap backsheetImage(Bitmap bm) {

    int width = bm.getWidth();
    int height = bm.getHeight();
    int color;//from ww w  . jav  a2 s.c  om
    int r, g, b, a;

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];

    bm.getPixels(oldPx, 0, width, 0, 0, width, height);

    for (int i = 0; i < oldPx.length; i++) {
        color = oldPx[i];
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);
        a = Color.alpha(color);

        r = 255 - r;
        g = 255 - g;
        b = 255 - b;

        if (r > 255) {
            r = 255;
        } else if (r < 0) {
            r = 0;
        }

        if (g > 255) {
            g = 255;
        } else if (g < 0) {
            g = 0;
        }

        if (b > 255) {
            b = 255;
        } else if (b < 0) {
            b = 0;
        }

        newPx[i] = Color.argb(a, r, g, b);
    }

    bitmap.setPixels(newPx, 0, width, 0, 0, width, height);
    return bitmap;
}

---

From source file:Main.java

public static Bitmap olderImage(Bitmap bm) {

    int width = bm.getWidth();
    int height = bm.getHeight();
    int color;//from w ww. ja v a2 s.c  o m
    int r, g, b, a;

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];

    bm.getPixels(oldPx, 0, width, 0, 0, width, height);

    for (int i = 0; i < oldPx.length; i++) {
        color = oldPx[i];
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);
        a = Color.alpha(color);

        r = (int) (0.393 * r + 0.769 * g + 0.189 * b);
        g = (int) (0.349 * r + 0.686 * g + 0.168 * b);
        b = (int) (0.272 * r + 0.534 * g + 0.131 * b);

        if (r > 255) {
            r = 255;
        } else if (r < 0) {
            r = 0;
        }

        if (g > 255) {
            g = 255;
        } else if (g < 0) {
            g = 0;
        }

        if (b > 255) {
            b = 255;
        } else if (b < 0) {
            b = 0;
        }

        newPx[i] = Color.argb(a, r, g, b);
    }

    bitmap.setPixels(newPx, 0, width, 0, 0, width, height);
    return bitmap;
}

---

From source file:Main.java

public static Bitmap getBlur(Bitmap bitmap) {
    int iterations = 1;
    int radius = 8;
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int[] inPixels = new int[width * height];
    int[] outPixels = new int[width * height];
    Bitmap blured = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bitmap.getPixels(inPixels, 0, width, 0, 0, width, height);
    for (int i = 0; i < iterations; i++) {
        blur(inPixels, outPixels, width, height, radius);
        blur(outPixels, inPixels, height, width, radius);
    }// ww w  .  ja  v  a 2  s .  c  o  m
    blured.setPixels(inPixels, 0, width, 0, 0, width, height);
    return blured;
}

---

From source file:Main.java

public static Bitmap applyFilter(Bitmap bmpOriginal) {
    int width = bmpOriginal.getWidth();
    int height = bmpOriginal.getHeight();

    int core[][] = { { 1, 1, 1 }, { 1, 2, 1 }, { 1, 1, 1 } };

    int[] result = new int[height * width];
    int[][] pixels2D = new int[height][width];
    for (int i = 0; i < height; i++) {
        bmpOriginal.getPixels(pixels2D[i], 0, width, 0, i, width, 1);
    }//from www .  ja v  a 2s.  c om

    int count = 0;
    int R, G, B;
    for (int i = 0; i < height; i++)
        for (int j = 0; j < width; j++) {
            R = dotProduct(i, j, 0, pixels2D, core) / 10 + 20;
            G = dotProduct(i, j, 1, pixels2D, core) / 10 + 20;
            B = dotProduct(i, j, 2, pixels2D, core) / 10 + 20;

            result[count] = Color.rgb(R, G, B);
            count++;
        }

    Bitmap bmpFiltered = Bitmap.createBitmap(result, 0, width, width, height, Bitmap.Config.RGB_565);
    return bmpFiltered;
}

---

From source file:Main.java

public static Bitmap reliefImage(Bitmap bm) {

    int width = bm.getWidth();
    int height = bm.getHeight();
    int color;//from   w  w  w  .ja  v a  2s  .  c  om
    int r, g, b, a;

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];

    bm.getPixels(oldPx, 0, width, 0, 0, width, height);

    for (int i = 1; i < oldPx.length; i++) {
        color = oldPx[i - 1];
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);
        a = Color.alpha(color);

        int nextColor = oldPx[i];
        int r1 = Color.red(nextColor);
        int g1 = Color.green(nextColor);
        int b1 = Color.blue(nextColor);

        r = r1 - r + 127;
        g = g1 - g + 127;
        b = b1 - b + 127;

        if (r > 255) {
            r = 255;
        } else if (r < 0) {
            r = 0;
        }

        if (g > 255) {
            g = 255;
        } else if (g < 0) {
            g = 0;
        }

        if (b > 255) {
            b = 255;
        } else if (b < 0) {
            b = 0;
        }

        newPx[i] = Color.argb(a, r, g, b);
    }

    bitmap.setPixels(newPx, 0, width, 0, 0, width, height);
    return bitmap;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• »