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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:
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)
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 files for 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) + "." + postfix org_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(): # convert for 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.py rename_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 os def main(): rm_list = greps() rm(rm_list) def greps(): import re rm_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_list def 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()
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