png图片缺乏某些库，导致损坏，或者多余了一些数据会导致以下报错：
libpng warning: iCCP: known incorrect sRGB profile
libpng warning iccp extra compressed data一些可能的解决方案：
已有方案
来自：https://blog.csdn.net/qq_37924224/article/details/119181028
libpng 1.6及以上版本增强了ICC profiles检查，所以发出警告。从 PNG 图像中删除 iCCP profiles。
可以先读取，再重新保存：
import cv2
from skimage import io
image = io.imread(path)
image = cv2.cvtColor(image, cv2.COLOR_RGBA2BGRA)
cv2.imencode('.png',image)[1].tofile(path)本文提供方案
观察到报错的图片根本无法打开，选择删除对应图片。
文件结构：
- all- train- folder1- img1.png- ....- imgn.png- foler2- ...- test- folder1- img1.png- ....- imgn.png- foler2- ...实现功能：
重命名文件夹，重命名文件名称（ps: 原来是有中文的），使用convert命令转换png为jpg
import os
import cv2
import random dir_path = "all/train"def rename_folder():for idx, subdir in enumerate(os.listdir(dir_path)):new_folder = "%s_" % (str(random.randint(0,10000))) + str(idx)whole_subdir = os.path.join(dir_path, subdir)whole_newdir = os.path.join(dir_path, new_folder)# print(f"rename {whole_subdir} to {whole_newdir}")os.rename(whole_subdir, whole_newdir)def rename():# rename filesfor subdir in os.listdir(dir_path):whole_path = os.path.join(dir_path, subdir)for idx, img_name in enumerate(os.listdir(whole_path)):postfix = "png" if img_name.endswith("png") else "jpg"new_img_name = str(idx) + "." + postfixorg_path = os.path.join(whole_path, img_name)new_path = os.path.join(whole_path, new_img_name)# print(f"rename {org_path} to {new_path}")os.rename(org_path, new_path)def convert_png2jpg():# convertfor subdir in os.listdir(dir_path):whole_path = os.path.join(dir_path, subdir)for img_name in os.listdir(whole_path):img_whole_path = os.path.join(whole_path, img_name)if img_name.endswith("png"):# print(img_whole_path)img = cv2.imread(img_whole_path)cv2.imwrite(img_whole_path, img)os.system("convert %s %s"% (img_whole_path, img_whole_path.replace("png", "jpg")))def main():# run with nohup# 1. rm nohup.out# 2. nohup python convert_png.pyrename_folder()rename()convert_png2jpg()if __name__ == "__main__":main()这个时候有可能会出现报错：
这些无法convert的文件就是需要删除的对象，通过正则化方法匹配对应文件, 并删除。
import osdef main():rm_list = greps()rm(rm_list)def greps():import rerm_list = []file = "nohup.out"f = open(file, "r")for line in f.readlines():res = re.findall("`.+'", line)if res:rm_list.append(*res)return rm_listdef rm(rm_list):rm_list = [item.lstrip("`").rstrip("'") for item in rm_list]for item in rm_list:print("rm: ", item)os.system("rm %s" % item)if __name__ == "__main__":main()
