多媒体编程 on Dapeng Zhang

Python 入门基础知识 - 多媒体编程 - PIL处理图片之为图片添加Logo

Mon, 28 Jul 2025 17:48:31 +0800

为图片添加Logo

使用PIL为图片添加Logo，主要使用Image的paste函数。paste函数可以向图片中粘贴其他的图片。代码实例如下，使用PIL模块为图片批量添加Logo

# _*_ coding: utf-8 -*-
# version 2.7.13
# osx

import os
from PIL import Image
import Tkinter
import tkFileDialog
import tkMessageBox

class Window:
 def __init__(self):
 self.root = root = Tkinter.Tk()
 self.Image = Tkinter.StringVar()
 self.status = Tkinter.StringVar()
 self.mstatus = Tkinter.IntVar()
 self.fstatus = Tkinter.IntVar()
 self.pstatus = Tkinter.IntVar()
 self.Image.set('bmp')
 self.mstatus.set(0)
 self.fstatus.set(0)
 self.pstatus.set(0)
 label = Tkinter.Label(root, text='Logo')
 label.place(x=5, y=5)
 self.entryLogo = Tkinter.Entry(root)
 self.entryLogo.place(x=55, y=5)

 self.buttonBrowserLogo = Tkinter.Button(
 root, text='浏览', command=self.BrowserLogo)
 self.buttonBrowserLogo.place(x=200, y=5)

 self.checkM = Tkinter.Checkbutton(root, text='批量转换',
 command=self.OnCheckM,
 variable=self.mstatus,
 onvalue=1,
 offvalue=0)
 self.checkM.place(x=5, y=30)
 label = Tkinter.Label(root, text='选择文件')
 label.place(x=5, y=55)
 self.entryFile = Tkinter.Entry(root)
 self.entryFile.place(x=55, y=55)
 self.buttonBrowserFile = Tkinter.Button(root, text='浏览',
 command=self.BrowserFile)
 self.buttonBrowserFile.place(x=200, y=55)
 label = Tkinter.Label(root, text='选择目录')
 label.place(x=5, y=80)
 self.entryDir = Tkinter.Entry(root, state=Tkinter.DISABLED)
 self.entryDir.place(x=55, y=80)
 self.buttonBrowserDir = Tkinter.Button(root, text='浏览',
 command=self.BrowserDir,
 state=Tkinter.DISABLED)
 self.buttonBrowserDir.place(x=200, y=80)
 self.checkF = Tkinter.Checkbutton(root, text='改变文件格式',
 command=self.OnCheckF,
 variable=self.fstatus,
 onvalue=1,
 offvalue=0)
 self.checkF.place(x=5, y=110)
 frame = Tkinter.Frame(root)
 frame.place(x=10, y=130)
 labelTo = Tkinter.Label(frame, text='格式')
 labelTo.pack(anchor='w')
 self.rBmp = Tkinter.Radiobutton(frame, variable=self.Image,
 value='bmp',
 text='BMP',
 state=Tkinter.DISABLED)
 self.rBmp.pack(anchor='w')
 self.rJpg = Tkinter.Radiobutton(frame, variable=self.Image,
 value='jpg',
 text='JPG',
 state=Tkinter.DISABLED)
 self.rJpg.pack(anchor='w')
 self.rGif = Tkinter.Radiobutton(frame, variable=self.Image,
 value='gif',
 text='GIF',
 state=Tkinter.DISABLED)
 self.rGif.pack(anchor='w')
 self.rPng = Tkinter.Radiobutton(frame, variable=self.Image,
 value='png',
 text='PNG',
 state=Tkinter.DISABLED)
 self.rPng.pack(anchor='w')

 pframe = Tkinter.Frame(root)
 pframe.place(x=70, y=130)

 labelPos = Tkinter.Label(pframe, text='位置')
 labelPos.pack(anchor='w')

 self.rLT = Tkinter.Radiobutton(
 pframe, variable=self.pstatus, value=0, text='左上角')
 self.rLT.pack(anchor='w')

 self.rRT = Tkinter.Radiobutton(
 pframe, variable=self.pstatus, value=1, text='右上角')
 self.rRT.pack(anchor='w')

 self.rLB = Tkinter.Radiobutton(
 pframe, variable=self.pstatus, value=2, text='左下角')
 self.rLB.pack(anchor='w')

 self.rRB = Tkinter.Radiobutton(
 pframe, variable=self.pstatus, value=3, text='左上角')
 self.rRB.pack(anchor='w')

 self.buttonAdd = Tkinter.Button(root, text='添加', command=self.Add)
 self.buttonAdd.place(x=180, y=175)

 self.labelStatus = Tkinter.Label(root, textvariable=self.status)
 self.labelStatus.place(x=150, y=205)

 def MainLoop(self): # 进入消息循环
 self.root.minsize(250, 250)
 self.root.maxsize(250, 250)
 self.root.mainloop()

 def BrowserLogo(self):
 file = tkFileDialog.askopenfilename(title='Python Music Player', filetypes=[(
 'JPG', '*.jpg'), ('BMP', '*.bmp'), ('PNG', '*.png'), ('GIF', '*.gif')])
 if file:
 self.entryLogo.delete(0, Tkinter.END)
 self.entryLogo.insert(Tkinter.END, file)

 def BrowserDir(self):
 directory = tkFileDialog.askdirectory(title='Python')
 if directory:
 self.entryDir.delete(0, Tkinter.END)
 self.entryDir.insert(Tkinter.END, directory)

 def BrowserFile(self):
 file = tkFileDialog.askopenfilename(title='Python Music Player', filetypes=[(
 'JPG', '*.jpg'), ('BMP', '*.bmp'), ('PNG', '*.png'), ('GIF', '*.gif')])
 if file:
 self.entryFile.delete(0, Tkinter.END)
 self.entryFile.insert(Tkinter.END, file)

 def OnCheckM(self): # 设置组件状态
 if not self.mstatus.get():
 self.entryDir.config(state=Tkinter.DISABLED)
 self.entryFile.config(state=Tkinter.NORMAL)
 self.buttonBrowserDir.config(state=Tkinter.DISABLED)
 self.buttonBrowserFile.config(state=Tkinter.NORMAL)
 else:
 self.entryDir.config(state=Tkinter.NORMAL)
 self.entryFile.config(state=Tkinter.DISABLED)
 self.buttonBrowserDir.config(state=Tkinter.NORMAL)
 self.buttonBrowserFile.config(state=Tkinter.DISABLED)

 def OnCheckF(self): # 设置组件状态
 if not self.fstatus.get():
 self.rBmp.config(state=Tkinter.DISABLED)
 self.rJpg.config(state=Tkinter.DISABLED)
 self.rGif.config(state=Tkinter.DISABLED)
 self.rPng.config(state=Tkinter.DISABLED)
 else:
 self.rBmp.config(state=Tkinter.NORMAL)
 self.rJpg.config(state=Tkinter.NORMAL)
 self.rGif.config(state=Tkinter.NORMAL)
 self.rPng.config(state=Tkinter.NORMAL)

 def Add(self):
 n = 0
 if self.mstatus.get():
 path = self.entryDir.get()
 if path == '':
 tkMessageBox.showerror('Python Tkinter', '请输入路径')
 return

 filenames = os.listdir()
 if self.fstatus.get():
 f = self.Image.get()
 for filename in filenames:
 if filename[-3:] in ('bmp', 'jpg', 'gif', 'png'):
 self.addlogo(path + '/' + filename, f)
 n = n + 1
 else:
 for filename in filenames:
 if filename[-3:] in ('bmp', 'jpg', 'gif', 'png'):
 self.addlogo(path + '/' + filename)
 n = n + 1
 else:
 file = self.entryFile.get()
 if file == '':
 tkMessageBox.showerror('Python Tkinter', '请选择文件')
 return

 if self.fstatus.get():
 f = self.Image.get()
 self.addlogo(file, f)
 n = n + 1
 else:
 self.addlogo(file)
 n = n + 1

 self.status.set('成功添加%d图片' % n)

 def addlogo(self, file, format=None):
 logo = self.entryLogo.get()
 if logo == '':
 tkMessageBox.showerror('Python Tkinter', '请选择logo')

 im = Image.open(file)
 lo = Image.open(logo)
 imwidth, imheight = im.size
 lowidth, loheight = lo.size

 pos = self.pstatus.get()
 if pos == 0:
 left = 0
 top = 0
 right = lowidth
 bottom = loheight
 elif pos == 1:
 left = imwidth - lowidth
 top = 0
 right = imwidth
 bottom = loheight
 elif pos == 2:
 left = 0
 top = imheight - loheight
 right = lowidth
 bottom = imheight
 else:
 left = imwidth - lowidth
 top = imheight - loheight
 right = imwidth
 bottom = imheight

 im.paste(lo, (left, top, right, bottom))
 if format:
 im.save(file[:len(file)-4] + '_logo.' + format)
 else:
 im.save(file[:len(file)-4] + '_logo' + file[-4:])

window = Window()
window.MainLoop()

运行后效果如下

Python 入门基础知识 - 多媒体编程 - PIL处理图片之生成缩略图

Mon, 28 Jul 2025 17:39:07 +0800

生成缩略图

使用PIL生成缩略图主要是使用Image的size函数。使用size函数可以重新指定图片的大小，代码实例如下，使用PIL模块批量生成图片缩略图

# _*_ coding: utf-8 -*-
# version 2.7.13

import os
from PIL import Image
import Tkinter
import tkFileDialog
import tkMessageBox

class Window:
 def __init__(self):
 self.root = root = Tkinter.Tk()
 self.Image = Tkinter.StringVar()
 self.status = Tkinter.StringVar()
 self.mstatus = Tkinter.IntVar()
 self.fstatus = Tkinter.IntVar()
 self.Image.set('bmp')
 self.mstatus.set(0)
 self.fstatus.set(0)
 label = Tkinter.Label(root, text='输入百分比')
 label.place(x=5, y=5)
 self.entryNew = Tkinter.Entry(root)
 self.entryNew.place(x=65, y=5)
 self.checkM = Tkinter.Checkbutton(root, text='批量转换',
 command=self.OnCheckM,
 variable=self.mstatus,
 onvalue=1,
 offvalue=0)
 self.checkM.place(x=5, y=30)
 label = Tkinter.Label(root, text='选择文件')
 label.place(x=5, y=55)
 self.entryFile = Tkinter.Entry(root)
 self.entryFile.place(x=55, y=55)
 self.buttonBrowserFile = Tkinter.Button(root, text='浏览',
 command=self.BrowserFile)
 self.buttonBrowserFile.place(x=200, y=55)
 label = Tkinter.Label(root, text='选择目录')
 label.place(x=5, y=80)
 self.entryDir = Tkinter.Entry(root, state=Tkinter.DISABLED)
 self.entryDir.place(x=55, y=80)
 self.buttonBrowserDir = Tkinter.Button(root, text='浏览',
 command=self.BrowserDir,
 state=Tkinter.DISABLED)
 self.buttonBrowserDir.place(x=200, y=80)
 self.checkF = Tkinter.Checkbutton(root, text='改变文件格式',
 command=self.OnCheckF,
 variable=self.fstatus,
 onvalue=1,
 offvalue=0)
 self.checkF.place(x=5, y=110)
 frame = Tkinter.Frame(root)
 frame.place(x=10, y=130)
 labelTo = Tkinter.Label(frame, text='To')
 labelTo.pack(anchor='w')
 self.rBmp = Tkinter.Radiobutton(frame, variable=self.Image,
 value='bmp',
 text='BMP',
 state=Tkinter.DISABLED)
 self.rBmp.pack(anchor='w')
 self.rJpg = Tkinter.Radiobutton(frame, variable=self.Image,
 value='jpg',
 text='JPG',
 state=Tkinter.DISABLED)
 self.rJpg.pack(anchor='w')
 self.rGif = Tkinter.Radiobutton(frame, variable=self.Image,
 value='gif',
 text='GIF',
 state=Tkinter.DISABLED)
 self.rGif.pack(anchor='w')
 self.rPng = Tkinter.Radiobutton(frame, variable=self.Image,
 value='png',
 text='PNG',
 state=Tkinter.DISABLED)
 self.rPng.pack(anchor='w')
 self.buttonConv = Tkinter.Button(root, text='转换', command=self.Conv)
 self.buttonConv.place(x=100, y=175)
 self.labelStatus = Tkinter.Label(root, textvariable=self.status)
 self.labelStatus.place(x=80, y=205)

 def MainLoop(self): # 进入消息循环
 self.root.minsize(250, 250)
 self.root.maxsize(250, 250)
 self.root.mainloop()

 def BrowserDir(self):
 directory = tkFileDialog.askdirectory(title='Python')
 if directory:
 self.entryDir.delete(0, Tkinter.END)
 self.entryDir.insert(Tkinter.END, directory)

 def BrowserFile(self):
 file = tkFileDialog.askopenfilename(title='Python Music Player', filetypes=[('JPG','*.jpg'),('BMP', '*.bmp'),('PNG', '*.png'),('GIF', '*.gif')])
 if file:
 self.entryFile.delete(0, Tkinter.END)
 self.entryFile.insert(Tkinter.END, file)

 def OnCheckM(self): # 设置组件状态
 if not self.mstatus.get():
 self.entryDir.config(state=Tkinter.DISABLED)
 self.entryFile.config(state=Tkinter.NORMAL)
 self.buttonBrowserDir.config(state=Tkinter.DISABLED)
 self.buttonBrowserFile.config(state=Tkinter.NORMAL)
 else:
 self.entryDir.config(state=Tkinter.NORMAL)
 self.entryFile.config(state=Tkinter.DISABLED)
 self.buttonBrowserDir.config(state=Tkinter.NORMAL)
 self.buttonBrowserFile.config(state=Tkinter.DISABLED)

 def OnCheckF(self): # 设置组件状态
 if not self.fstatus.get():
 self.rBmp.config(state=Tkinter.DISABLED)
 self.rJpg.config(state=Tkinter.DISABLED)
 self.rGif.config(state=Tkinter.DISABLED)
 self.rPng.config(state=Tkinter.DISABLED)
 else:
 self.rBmp.config(state=Tkinter.NORMAL)
 self.rJpg.config(state=Tkinter.NORMAL)
 self.rGif.config(state=Tkinter.NORMAL)
 self.rPng.config(state=Tkinter.NORMAL)

 def Conv(self):
 n = 0
 if self.mstatus.get():
 path = self.entryDir.get()
 if path == '':
 tkMessageBox.showerror('Python Tkinter', '请输入路径')
 return

 filenames = os.listdir()
 if self.fstatus.get():
 f = self.Image.get()
 for filename in filenames:
 if filename[-3:] in ('bmp','jpg','gif','png'):
 self.make(path + '/' + filename, f)
 n = n + 1
 else:
 for filename in filenames:
 if filename[-3:] in ('bmp', 'jpg', 'gif', 'png'):
 self.make(path + '/' + filename)
 n = n + 1
 else:
 file = self.entryFile.get()
 if file == '':
 tkMessageBox.showerror('Python Tkinter', '请选择文件')
 return

 if self.fstatus.get():
 f = self.Image.get()
 self.make(file, f)
 n = n + 1
 else:
 self.make(file)
 n = n + 1

 self.status.set('成功转换%d图片' % n)

 def make(self, file, format=None):
 im = Image.open(file)
 mode = im.mode
 if mode not in ('L', 'RGB'):
 im = im.convert('RGB')

 width, height = im.size
 s = self.entryNew.get()
 if s == '':
 tkMessageBox.showerror('Python Tkinter', '请输入百分比')
 return
 else:
 n = int(s)

 nwidth = width * n / 100
 nheight = height * n / 100
 thumb = im.resize((nwidth, nheight), Image.ANTIALIAS)
 if format:
 thumb.save(file[:len(file)-4] + '_thumb.' + format)
 else:
 thumb.save(file[:len(file)-4] + '_thumb' + file[-4:])

window = Window()
window.MainLoop()

执行后的结果如下

Python 入门基础知识 - 多媒体编程 - PIL处理图片之转换图片格式

Mon, 28 Jul 2025 17:39:02 +0800

转换图片格式

使用PIL转换图片格式，主要是使用PIL的Image模块。首先使用Image.open函数打开文件，然后将文件保存成所需要的格式即可。Image可以根据文件的扩展名自动选择文件保存的格式，因此不需要设置文件格式。如下所示的代码演示，使用Image模块进行批量图片文件格式转换。


# _*_ coding: utf-8 -*-
# version 2.7.13

import os
from PIL import Image
import Tkinter
import tkFileDialog
import tkMessageBox

class Window:

 def __init__(self):
 self.root = root = Tkinter.Tk()
 label = Tkinter.Label(root, text='选择目录')
 label.place(x=5, y=5)
 self.entry = Tkinter.Entry(root)
 self.entry.place(x=55, y=5)
 self.buttonBrowser = Tkinter.Button(
 root, text='浏览', command=self.Browser)
 self.buttonBrowser.place(x=200, y=5)
 frameF = Tkinter.Frame(root)
 frameF.place(x=5, y=30)
 frameT = Tkinter.Frame(root)
 frameT.place(x=100, y=30)
 self.fImage = Tkinter.StringVar()
 self.tImage = Tkinter.StringVar()
 self.status = Tkinter.StringVar()
 self.fImage.set('.bmp')
 self.tImage.set('.bmp')
 labelFrom = Tkinter.Label(frameF, text='From')
 labelFrom.pack(anchor='w')
 labelTo = Tkinter.Label(frameT, text='To')
 labelTo.pack(anchor='w')
 frBmp = Tkinter.Radiobutton(
 frameF, variable=self.fImage, value='.bmp', text='BMP')
 frBmp.pack(anchor='w')

 frJpg = Tkinter.Radiobutton(
 frameF, variable=self.fImage, value='.jpg', text='JPG')
 frJpg.pack(anchor='w')

 frGif = Tkinter.Radiobutton(
 frameF, variable=self.fImage, value='.gif', text='GIF')
 frGif.pack(anchor='w')

 frPng = Tkinter.Radiobutton(
 frameF, variable=self.fImage, value='.png', text='PNG')
 frPng.pack(anchor='w')

 trBmp = Tkinter.Radiobutton(
 frameT, variable=self.tImage, value='.bmp', text='BMP')
 trBmp.pack(anchor='w')

 trJpg = Tkinter.Radiobutton(
 frameT, variable=self.tImage, value='.jpg', text='JPG')
 trJpg.pack(anchor='w')

 trGif = Tkinter.Radiobutton(
 frameT, variable=self.tImage, value='.gif', text='GIF')
 trGif.pack(anchor='w')

 trPng = Tkinter.Radiobutton(
 frameT, variable=self.tImage, value='.png', text='PNG')
 trPng.pack(anchor='w')

 self.buttonConv = Tkinter.Button(root, text='转换', command=self.Conv)
 self.buttonConv.place(x=100, y=150)
 self.labelStatus = Tkinter.Label(root, textvariable=self.status)
 self.labelStatus.place(x=50, y=175)

 def MainLoop(self):
 self.root.minsize(250, 200)
 self.root.maxsize(250, 200)
 self.root.mainloop()

 def Browser(self):
 directory = tkFileDialog.askdirectory(title='Python')
 if directory:
 self.entry.delete(0, Tkinter.END)
 self.entry.insert(Tkinter.END, directory)

 def Conv(self):
 n = 0
 t = self.tImage.get()
 f = self.fImage.get()
 path = self.entry.get()
 if path == '':
 tkMessageBox.showerror('Python Tkinter', '请输入路径')
 return

 filenames = os.listdir(path)
 os.mkdir(path + '/' + t[-3:])
 for filename in filenames:
 if filename[-4:] == f:
 Image.open(path + '/' + filename)\
 .save(path + '/' + t[-3:] + '/' + filename[:-4] + t)
 n = n + 1

 self.status.set('成功转换%d张图片' % n)

window = Window()
window.MainLoop()

运行效果如下