我正在嘗試通過轉換像素值并使用此等式 X(new) = 0.5 * X(old)^2 來實現調光方法來調暗圖像。我做了一些谷歌搜索，但未能成功。這是我的代碼：import mathfrom PIL import Imageimport numpy as npfrom skimage import color, ioimport matplotlib.pyplot as pltdef load(image_path):    out = plt.imread(image_path)    out = out.astype(np.float64) / 255    return outdef dim_image(image):    out = image.point(lambda x: x*0.5)    return outdef display(img):    # Show image    plt.figure(figsize = (5,5))    plt.imshow(img)    plt.axis('off')    plt.show()image1 = load(image1_path)image2 = load(image2_path)display(image1)display(image2)new_image = dim_image(image1)display(new_image)