void motionblur(int n){//n is blur amount
        System.out.println("Blur setting = " + n);
        if(n < 0) {
            System.out.println("ERROR. Blur setting must be more than 0.");
            System.exit(0);
        }
        for(int i = width - 1; i > 0; i++) {
            int numRows = n;
            if (i + n > width) {
                numRows = width - i;
            }
            for (int j = 0; j < height; j++) {
                int rAvg = 0;
                int gAvg = 0;
                int bAvg = 0;

                for(int k = 1; k < numRows; k++) {
                    rAvg = image[j][i + k - 1].red;
                    gAvg = image[j][i + k - 1].green;
                    bAvg = image[j][i + k - 1].blue;
                }

                image[j][i].red = rAvg/numRows;
                image[j][i].green = gAvg/numRows;
                image[j][i].blue = bAvg/numRows;
            }
        }
    }