由于前段时间用手机拍照，发现图片太大，一张就差不多5M，传到电脑后太大了，不方便处理，所以写了这个用opencv来压缩一下。
下面是具体代码，代码较简单，大家一看就懂。
#coding = utf-8
import cv2
import os
import mathdef get_doc_size(path):try:size = os.path.getsize(path)return get_mb_size(size)except Exception as err:print(err)def get_mb_size(bytes):bytes = float(bytes)mb = bytes / 1024 / 1024return mbdef delete_file(path):if file_exist(path):os.remove(path)else:print('no such file:%s' % path)def file_exist(path):return os.path.exists(path)def resize_rate(path, resize_path, fx, fy):image = read_image(path)im_resize = cv2.resize(image, None, fx=fx, fy=fy)delete_file(resize_path)save_image(resize_path, im_resize)def save_image(path, image):cv2.imwrite(path, image)def read_image(path):return cv2.imread(path)path = "D://3//313.jpg" #被压缩图片的绝对路径
resize_path = "D://3//3.jpg" #压缩图片的存储位置，记住给压缩图片命名，3.jpg就是压缩后图片的名字
size = get_doc_size(path)
print(size) #原始的size
delete_file(resize_path)
filesize = 0.8 #压缩比例while size > filesize:rate = math.ceil((size / filesize) * 10) / 10 + 0.1rate = math.sqrt(rate)rate = 1.0 / rateif file_exist(resize_path):resize_rate(resize_path, resize_path, rate, rate)else:resize_rate(path, resize_path, rate, rate)size = get_doc_size(resize_path)
下面是效果截图
下面是我的github链接，里面有源码，读者可以自行下载
https://github.com/jiang-congcong/compress-picture-by-opencv3
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