调整图像的亮度

 1 from PIL import Image,ImageEnhance
 2 img = Image.open(r‘C:\Users\87823\Desktop\tree.png‘)
 3 w,h = img.size
 4 # print(‘w:‘,w,‘h:‘,h)
 5 # 创建图像区域
 6 img_output = Image.new(‘RGB‘,(3*w,h))
 7 #将原图复制到（0，0）
 8 img_output.paste(img,(0,0))
 9 #获取亮度调整器
10 img_bright = ImageEnhance.Brightness(img)
11 # 增强亮度
12 imgb = img_bright.enhance(1.5)
13 img_output.paste(imgb,(w,0))
14 # 减弱亮度
15 imgb = img_bright.enhance(0.5)
16 img_output.paste(imgb,(2*w,0))
17 img_output.show()