for (int j = 1; j < (width - 2); j++) // top and bottom edge excluding corners
    {
        image[0][j].rgbtRed = avgOf6R(image2[0][j - 1], image2[0][j], image2[0][j + 1], image2[1][j - 1], image2[1][j], image2[1][j + 1]);
        image[0][j].rgbtGreen = avgOf6G(image2[0][j - 1], image2[0][j], image2[0][j + 1], image2[1][j - 1], image2[1][j], image2[1][j + 1]);
        image[0][j].rgbtBlue = avgOf6B(image2[0][j - 1], image2[0][j], image2[0][j + 1], image2[1][j - 1], image2[1][j], image2[1][j + 1]);

        image[a][j].rgbtRed = avgOf6R(image2[a][j - 1], image2[a][j], image2[a][j + 1], image2[a - 1][j - 1], image2[a - 1][j], image2[a - 1][j + 1]);
        image[a][j].rgbtGreen = avgOf6G(image2[a][j - 1], image2[a][j], image2[a][j + 1], image2[a - 1][j - 1], image2[a - 1][j], image2[a - 1][j + 1]);
        image[a][j].rgbtBlue = avgOf6B(image2[a][j - 1], image2[a][j], image2[a][j + 1], image2[a - 1][j - 1], image2[a - 1][j], image2[a - 1][j + 1]);
    }