Third commit

GammaCorrection.py

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+# -*- coding: utf-8 -*-
+# @Time    : 2022-7-26 0026 11:41
+# @Author  : Qing
+# @Email   : derighoid@gmail.com
+# @File    : GammaCorrection.py
+# @Software: PyCharm
+'''
+gamma矫正公式：
+f(x)=xγ
+即输出是输入的幂函数，指数为γ．
+'''
+import matplotlib.pyplot as plt
+import numpy as np
+from PIL import Image
+
+root = "E:\\桌面\\Python_Picture_Analysis\\data\\"
+
+
+def gammaCorrect(filePath,val):
+    im = Image.open(filePath)
+    img = np.array(im)
+
+    img1 = np.power(img / float(np.max(img)), 1 / 1.5)
+    img2 = np.power(img / float(np.max(img)), val)
+
+    plt.subplot(131)
+    plt.imshow(img)
+    plt.title("origin")
+    plt.subplot(132)
+    plt.imshow(img1)
+    plt.title("gammar=1/1.5")
+    plt.subplot(133)
+    plt.imshow(img2)
+    plt.title("user-defined")
+    plt.show()
+    Image.fromarray(np.uint8(img2)).save(root + 'picture10' + '.jpg')
+    return img2
+
+