查找图像是亮还是暗 [英] Find If Image Is Bright Or Dark

问题描述

我想知道如何使用OpenCV在Python 3中编写函数，该函数接受图像和阈值，并在严重模糊和降低质量(更快越好)后返回暗"或亮".听起来可能有些含糊，但是任何可行的方法都可以.

I would like to know how to write a function in Python 3 using OpenCV which takes in an image and a threshold and returns either 'dark' or 'light' after heavily blurring it and reducing quality (faster the better). This might sound vague , but anything that just works will do.

推荐答案

您可以尝试以下方法:

import imageio
import numpy as np

f = imageio.imread(filename, as_gray=True)

def img_estim(img, thrshld):
    is_light = np.mean(img) > thrshld
    return 'light' if is_light else 'dark'

print(img_estim(f, 127))

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