PIL基本功能介绍

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from PIL import Image
from PIL import ImageEnhance
 
img = Image.open(r'E:\img\f1.png')
img.show()
#图像二值化
img = img.convert('L')
# 图像放大
img = img.resize((img.width * int(3), img.height * int(4)), Image.ANTIALIAS)
# # 对比度增强
enh_con = ImageEnhance.Contrast(img)
contrast = 2
img_contrasted = enh_con.enhance(contrast)
# 亮度增强
enh_bri = ImageEnhance.Brightness(img_contrasted)
brightness = 2.5
image_brightened = enh_bri.enhance(brightness)
#色度增强
enh_col = ImageEnhance.Color(img)
color = 50
image_colored = enh_col.enhance(color)
# # 锐度增强
enh_sha = ImageEnhance.Sharpness(img)
sharpness = 2
image_sharped = enh_sha.enhance(sharpness)
image_sharped.save(r'E:\img\f22.png', dpi=(300, 300), quality=95)
# image_sharped.save(r'E:\img\f22.png')
 
# 图片汉字识别
img2 = Image.open(r'E:\img\f22.png')
code2 = pytesseract.image_to_string(img2, lang='chi_sim')
# print(code2)
# 图片裁剪
image_cro = Image.open(r'E:\img\f24.png')
image_cropped = image_cro.crop(res)
image_cropped.save(u'E:\img\\f25.png')　

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