Fast Bitmap Blur For Android SDK

Question

Currently in an Android application that I\'m developing I\'m looping through the pixels of an image to blur it. This takes about 30 seconds on a 640x480 image.

W

Answer 1

This code is work perfect for me

Bitmap tempbg = BitmapFactory.decodeResource(getResources(),R.drawable.b1); //Load a background.
Bitmap final_Bitmap = BlurImage(tempbg);


@SuppressLint("NewApi")
Bitmap BlurImage (Bitmap input)
{
    try
    {
    RenderScript  rsScript = RenderScript.create(getApplicationContext());
    Allocation alloc = Allocation.createFromBitmap(rsScript, input);

    ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rsScript,   Element.U8_4(rsScript));
    blur.setRadius(21);
    blur.setInput(alloc);

    Bitmap result = Bitmap.createBitmap(input.getWidth(), input.getHeight(), Bitmap.Config.ARGB_8888);
    Allocation outAlloc = Allocation.createFromBitmap(rsScript, result);

    blur.forEach(outAlloc);
    outAlloc.copyTo(result);

    rsScript.destroy();
    return result;
    }
    catch (Exception e) {
        // TODO: handle exception
        return input;
    }

}