Python基础 图像处理标准库 Pillow

Pillow

Python平台的图像处理标准库

获取图片大小

运行示例

#!/usr/bin/env python3# -*- coding: utf-8 -*-# Python基础 Pillowfrom PIL import Imagedef getSize():    # 打开一个图片    pic = Image.open("D:/PythonProject/test.jpg")    # 获取图片大小    w, h = pic.size    print("原始图片大小 %s x %s" %(w,h))getSize()

运行结果

D:\PythonProject>python main.py原始图片大小 5184 x 3456

缩放图片

运行示例

#!/usr/bin/env python3# -*- coding: utf-8 -*-# Python基础 Pillowfrom PIL import Image# 缩放图片def thumbnail():    # 打开一个图片    pic = Image.open("D:/PythonProject/test.jpg")    # 获取图片大小    w, h = pic.size    print("原始图片大小 %s x %s" %(w,h))    # 缩放一半    pic.thumbnail((w//2, h//2))    newW, newH = pic.size    print("缩放后的图片大小 %s x %s" %(newW,newH))    # 另存图片    pic.save("thumbnail_test.jpg", "jpeg")thumbnail()

运行结果

D:\PythonProject>python main.py原始图片大小 5184 x 3456缩放后的图片大小 2592 x 1728

模糊特效

运行示例

#!/usr/bin/env python3# -*- coding: utf-8 -*-# Python基础 Pillowfrom PIL import Image, ImageFilter# 模糊特效def imageBlur():    # 打开一个图片    pic = Image.open("D:/PythonProject/chen.jpg")    # 加模糊滤镜    newPic = pic.filter(ImageFilter.BLUR)    newPic.save("blur_chen.jpg", "jpeg")imageBlur()

验证码

运行示例

#!/usr/bin/env python3# -*- coding: utf-8 -*-# Python基础 Pillowfrom PIL import Image, ImageFilter, ImageDraw, ImageFontimport random# 随机字母def randomChar():    return chr(random.randint(65, 90))# 随机颜色def randomColor():    return (random.randint(64, 255),random.randint(64, 255),random.randint(64, 255))# 文字颜色def rndFontColor():    return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))# 图片大小width = 60 * 5height = 60pic = Image.new("RGB", (width, height),(255,255,255))# 创建画笔font = ImageFont.truetype('arial.ttf', 36)# 创建Draw对象draw = ImageDraw.Draw(pic)# 填充每个像素for x in range(width):    for y in range(height):        draw.point((x, y), fill = randomColor())# 文字for t in range(5):    draw.text((60 * t + 10, 10), randomChar(), font=font, fill=rndFontColor())pic.save("code.jpg", "jpeg")

运行结果