Example usage for android.graphics Bitmap getPixel

Introduction

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

Prototype

@ColorInt
public int getPixel(int x, int y) 

Source Link

Document

Returns the Color at the specified location.

Usage

From source file:Main.java

public static float getValue(Bitmap bitmap, int x, int y) {
    if (x < 0 || y < 0 || x > (bitmap.getWidth() - 1) || y > (bitmap.getHeight() - 1))
        Log.d("GET PIXEL ERROR!!!!!!!!!!!!",
                "X,Y is " + x + "," + y + "\tmax X,Y is" + bitmap.getWidth() + "," + bitmap.getHeight());
    int color = bitmap.getPixel(x, y);
    int red = Color.red(color);
    int green = Color.green(color);
    int blue = Color.blue(color);
    float intensity = (float) (0.299 * red + 0.587 * green + 0.114 * blue);
    return intensity;
}

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From source file:Main.java

public static Bitmap doColorFilter(Bitmap src, double red, double green, double blue) {
    int w = src.getWidth();
    int h = src.getHeight();

    Bitmap bmOut = Bitmap.createBitmap(w, h, src.getConfig());
    int A, R, G, B, pixel;
    for (int x = 0; x < w; x++) {
        for (int y = 0; y < h; y++) {
            pixel = src.getPixel(x, y);
            A = Color.alpha(pixel);
            R = (int) (Color.red(pixel) * red);
            G = (int) (Color.green(pixel) * green);
            B = (int) (Color.blue(pixel) * blue);
            bmOut.setPixel(x, y, Color.argb(A, R, G, B));
        }/*from w ww  .java 2s.  c  om*/
    }
    return bmOut;
}

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From source file:Main.java

public static Bitmap subtract(Bitmap bitmap1, Bitmap bitmap2) {
    int width = bitmap1.getWidth();
    int height = bitmap1.getHeight();
    Bitmap grayBitmap1 = toGrayScale(bitmap1);
    Bitmap grayBitmap2 = toGrayScale(bitmap2);
    Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    for (int x = 0; x < width; x++)
        for (int y = 0; y < height; y++) {
            int value1 = Color.blue(grayBitmap1.getPixel(x, y));
            int value2 = Color.blue(grayBitmap2.getPixel(x, y));
            int resultValue = Math.abs(value2 - value1);
            //                resultValue = (resultValue>255/3)?resultValue:0;
            result.setPixel(x, y, Color.rgb(resultValue, resultValue, resultValue));
        }//from ww w. jav a2 s.  co  m
    //        grayBitmap1.recycle();
    //        grayBitmap2.recycle();
    return result;
}

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From source file:Main.java

public static Bitmap divide(Bitmap bitmap1, Bitmap bitmap2) {
    double alpha = Double.MIN_VALUE;
    int width = bitmap1.getWidth();
    int height = bitmap1.getHeight();
    Bitmap grayBitmap1 = toGrayScale(bitmap1);
    Bitmap grayBitmap2 = toGrayScale(bitmap2);
    Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    for (int x = 0; x < width; x++)
        for (int y = 0; y < height; y++) {
            int value1 = Color.blue(grayBitmap1.getPixel(x, y));
            int value2 = Color.blue(grayBitmap2.getPixel(x, y));
            //                int resultValue = (int) (Math.abs((Math.log((value1 + alpha)/(value2 + alpha))) * 1000));
            int resultValue = (int) ((Math.abs(Math.log((value1 + alpha) / (value2 + alpha)))) * 255);
            result.setPixel(x, y, Color.rgb(resultValue, resultValue, resultValue));
        }//  www  .j  a  va 2 s . c  o m
    //        grayBitmap1.recycle();
    //        grayBitmap2.recycle();
    return result;
}

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From source file:Main.java

public static Bitmap multiply(Bitmap bitmap1, Bitmap bitmap2) {
    double alpha = 0.1;
    int width = bitmap1.getWidth();
    int height = bitmap1.getHeight();
    Bitmap grayBitmap1 = toGrayScale(bitmap1);
    Bitmap grayBitmap2 = toGrayScale(bitmap2);
    Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    for (int x = 0; x < width; x++)
        for (int y = 0; y < height; y++) {
            int value1 = Color.blue(grayBitmap1.getPixel(x, y));
            int value2 = Color.blue(grayBitmap2.getPixel(x, y));
            int resultValue = (int) (Math.abs((value2 / 255.0) * (value1 / 255.0)) * 255);
            //                resultValue = (resultValue>255/2)?255:0;
            result.setPixel(x, y, Color.rgb(resultValue, resultValue, resultValue));
        }/*from   w w w. j  a  v a  2 s .  c  o  m*/
    //        grayBitmap1.recycle();
    //        grayBitmap2.recycle();
    return result;
}

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From source file:Main.java

public static Bitmap doInvert(Bitmap src) {
    Bitmap bmOut = Bitmap.createBitmap(src.getWidth(), src.getHeight(), src.getConfig());
    int A, R, G, B;
    int pixelColor;
    int w = src.getWidth();
    int h = src.getHeight();
    for (int y = 0; y < h; y++) {
        for (int x = 0; x < w; x++) {
            pixelColor = src.getPixel(x, y);
            A = Color.alpha(pixelColor);
            R = 255 - Color.red(pixelColor);
            G = 255 - Color.green(pixelColor);
            B = 255 - Color.blue(pixelColor);
            bmOut.setPixel(x, y, Color.argb(A, R, G, B));
        }/*from  www  .j  a va 2s.  co m*/
    }
    return bmOut;
}

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From source file:Main.java

public static int hasColorOnRect(Bitmap src, Rect serchRect, int inputColor) {
    int width = serchRect.width();
    int height = serchRect.height();

    if (width == 0 || height == 0)
        return inputColor;

    int color = inputColor;
    if (width == 1 && height == 1) {
        color = src.getPixel(serchRect.left, serchRect.top);
        return color != inputColor ? color : inputColor;
    }//  www .  ja  va2s  . c o  m
    if (width == 1 && height > 1) {
        for (int start = 0; start < height; ++start) {
            color = src.getPixel(serchRect.left, serchRect.top + start);
            if (color != inputColor)
                return color;
        }
        return inputColor;
    }
    if (width > 1 && height == 1) {
        for (int start = 0; start < width; ++start) {
            color = src.getPixel(serchRect.left + start, serchRect.top);
            if (color != inputColor)
                return color;
        }
        return inputColor;
    }
    if (width > 1 && height > 1) {
        for (int x = 0; x < width; ++x) {
            for (int y = 0; y < height; ++y) {
                color = src.getPixel(serchRect.left + x, serchRect.top + y);
                if (color != inputColor)
                    return color;
            }
        }

        return inputColor;
    }

    return inputColor;
}

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From source file:Main.java

public static Bitmap boost(Bitmap src, int type, float percent) {
    int width = src.getWidth();
    int height = src.getHeight();
    Bitmap bmOut = Bitmap.createBitmap(width, height, src.getConfig());

    int A, R, G, B;
    int pixel;//  w ww  .  j a v a 2 s  .c  o m

    for (int x = 0; x < width; ++x) {
        for (int y = 0; y < height; ++y) {
            pixel = src.getPixel(x, y);
            A = Color.alpha(pixel);
            R = Color.red(pixel);
            G = Color.green(pixel);
            B = Color.blue(pixel);
            if (type == 1) {
                R = (int) (R * (1 + percent));
                if (R > 255)
                    R = 255;
            } else if (type == 2) {
                G = (int) (G * (1 + percent));
                if (G > 255)
                    G = 255;
            } else if (type == 3) {
                B = (int) (B * (1 + percent));
                if (B > 255)
                    B = 255;
            }
            bmOut.setPixel(x, y, Color.argb(A, R, G, B));
        }
    }
    return bmOut;
}

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From source file:Main.java

private static List<int[]> getPixels(Bitmap image) {
    int width = image.getWidth();
    int height = image.getHeight();
    List<int[]> res = new ArrayList<>();
    List<Integer> t = new ArrayList<>();
    for (int row = 0; row < height; row++) {
        for (int col = 0; col < width; col++) {
            if (!image.isRecycled())
                t.add(image.getPixel(col, row));
        }/*from  w  w w.ja va  2  s .c  o  m*/
    }
    for (int i = 0; i < t.size(); i += 10) {
        int[] rr = new int[3];
        int argb = t.get(i);
        rr[0] = (argb >> 16) & 0xFF;
        rr[1] = (argb >> 8) & 0xFF;
        rr[2] = (argb) & 0xFF;
        if (!(rr[0] > 250 && rr[1] > 250 && rr[2] > 250)) {
            res.add(rr);
        }
    }
    return res;
}

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From source file:Main.java

@Nullable
public static Bitmap removeTransparent(@Nullable Bitmap source) {
    if (source == null) {
        return null;
    }//from   w w  w.  jav a2s .c  o m

    int minX = source.getWidth();
    int minY = source.getHeight();
    int maxX = -1;
    int maxY = -1;
    for (int y = 0; y < source.getHeight(); y++) {
        for (int x = 0; x < source.getWidth(); x++) {
            int alpha = (source.getPixel(x, y) >> 24) & 255;
            if (alpha > 0) {
                if (x < minX)
                    minX = x;
                if (x > maxX)
                    maxX = x;
                if (y < minY)
                    minY = y;
                if (y > maxY)
                    maxY = y;
            }
        }
    }

    if ((maxX < minX) || (maxY < minY)) {
        return null; // Bitmap is entirely transparent
    }

    // crop bitmap to non-transparent area and return:
    return Bitmap.createBitmap(source, minX, minY, (maxX - minX) + 1, (maxY - minY) + 1);
}

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