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

Nicolas POMEPUY advice. I think this link will be helpful: Blur effect for Android design

Sample project at github

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private static Bitmap fastblur16(Bitmap source, int radius, Context ctx) {    
    Bitmap bitmap = source.copy(source.getConfig(), true);    
    RenderScript rs = RenderScript.create(ctx);
    Allocation input = Allocation.createFromBitmap(rs, source, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
    Allocation output = Allocation.createTyped(rs, input.getType());
    ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setRadius(radius);
    script.setInput(input);
    script.forEach(output);
    output.copyTo(bitmap);
    return bitmap;
}