作者:上犹日期:
返回目录:电脑怎么了
最近由于网站对图片尺寸的需要,用python写了个小脚本,方便进行图片尺寸的一些调整,特记录如下:
- # coding=utf-8
- import Image
- import shutil
- import os
- class Graphics:
- infile = 'D:myimg.jpg'
- outfile = 'D:adjust_img.jpg'
- @classmethod
- def fixed_size(cls, width, height):
- """按照固定尺寸处理图片"""
- im = Image.open(cls.infile)
- out = im.resize((width, height),Image.ANTIALIAS)
- out.save(cls.outfile)
- @classmethod
- def resize_by_width(cls, w_divide_h):
- """按照宽度进行所需比例缩放"""
- im = Image.open(cls.infile)
- (x, y) = im.size
- x_s = x
- y_s = x/w_divide_h
- out = im.resize((x_s, y_s), Image.ANTIALIAS)
- out.save(cls.outfile)
- @classmethod
- def resize_by_height(cls, w_divide_h):
- """按照高度进行所需比例缩放"""
- im = Image.open(cls.infile)
- (x, y) = im.size
- x_s = y*w_divide_h
- y_s = y
- out = im.resize((x_s, y_s), Image.ANTIALIAS)
- out.save(cls.outfile)
- @classmethod
- def resize_by_size(cls, size):
- """按照生成图片文件大小进行处理(单位KB)"""
- size *= 1024
- im = Image.open(cls.infile)
- size_tmp = os.path.getsize(cls.infile)
- q = 100
- while size_tmp > size and q > 0:
- print q
- out = im.resize(im.size, Image.ANTIALIAS)
- out.save(cls.outfile, quality=q)
- size_tmp = os.path.getsize(cls.outfile)
- q -= 5
- if q == 100:
- shutil.copy(cls.infile, cls.outfile)
- @classmethod
- def cut_by_ratio(cls, width, height):
- """按照图片长宽比进行分割"""
- im = Image.open(cls.infile)
- width = float(width)
- height = float(height)
- (x, y) = im.size
- if width > height:
- region = (0, int((y-(y * (height / width)))/2), x, int((y+(y * (height / width)))/2))
- elif width < height:
- region = (int((x-(x * (width / height)))/2), 0, int((x+(x * (width / height)))/2), y)
- else:
- region = (0, 0, x, y)
- #裁切图片
- crop_img = im.crop(region)
- #保存裁切后的图片
- crop_img.save(cls.outfile)