从bmp获得平均颜色

from PIL import Image

def get_average_color(filename):
    # 打开图像文件
    img = Image.open(filename)
    # 获取图像的宽度和高度
    width, height = img.size
    # 计算图像的总像素数
    total_pixels = width * height
    # 计算图像的平均颜色值
    r_sum, g_sum, b_sum = 0, 0, 0
    for x in range(width):
        for y in range(height):
            r, g, b = img.getpixel((x, y))
            r_sum += r
            g_sum += g
            b_sum += b
    r_avg = r_sum / total_pixels
    g_avg = g_sum / total_pixels
    b_avg = b_sum / total_pixels
    return (r_avg, g_avg, b_avg)

# 使用示例
filename = 'example.bmp'
average_color = get_average_color(filename)
print(average_color)