-
Notifications
You must be signed in to change notification settings - Fork 0
/
ImageUtility.py
51 lines (46 loc) · 1.42 KB
/
ImageUtility.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
from PIL import Image
import os
def get_size(file):
# 获取文件大小:KB
size = os.path.getsize(file)
return size / 1024
def get_outfile(infile, outfile):
if outfile:
return outfile
dir, suffix = os.path.splitext(infile)
outfile = '{}-out{}'.format(dir, suffix)
return outfile
def compress_image(infile, outfile='', mb=200, step=10, quality=80):
"""不改变图片尺寸压缩到指定大小
:param infile: 压缩源文件
:param outfile: 压缩文件保存地址
:param mb: 压缩目标,KB
:param step: 每次调整的压缩比率
:param quality: 初始压缩比率
:return: 压缩文件地址,压缩文件大小
"""
o_size = get_size(infile)
if o_size <= mb:
return infile
outfile = get_outfile(infile, outfile)
while o_size > mb:
im = Image.open(infile)
im.save(outfile, quality=quality)
if quality - step < 0:
break
quality -= step
o_size = get_size(outfile)
return outfile, get_size(outfile)
def resize_image(infile, outfile='', x_s=1376):
"""修改图片尺寸
:param infile: 图片源文件
:param outfile: 重设尺寸文件保存地址
:param x_s: 设置的宽度
:return:
"""
im = Image.open(infile)
x, y = im.size
y_s = int(y * x_s / x)
out = im.resize((x_s, y_s), Image.ANTIALIAS)
outfile = get_outfile(infile, outfile)
out.save(outfile)