Попробуйте это
public static Bitmap mark(Bitmap src) {
int w = src.getWidth();
int h = src.getHeight();
int pw=w-170;
int ph=h-170;
Bitmap result = Bitmap.createBitmap(w, h, src.getConfig());
Canvas canvas = new Canvas(result);
Bitmap resized = Bitmap.createScaledBitmap(src, 150, 150, true);
canvas.drawBitmap(src, 0, 0, null);
Paint paint = new Paint();
paint.setColor(Color.TRANSPARENT);
paint.setAlpha(50);
paint.setTextSize(20);
paint.setAntiAlias(true);
paint.setUnderlineText(false);
canvas.drawBitmap(resized,pw,ph,paint);
return result;
}