-
Notifications
You must be signed in to change notification settings - Fork 782
/
verify_and_split_data.py
152 lines (126 loc) · 4.63 KB
/
verify_and_split_data.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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
"""
验证图片尺寸和分离测试集(5%)和训练集(95%)
初始化的时候使用,有新的图片后,可以把图片放在new目录里面使用。
"""
import json
from PIL import Image
import random
import os
import shutil
def verify(origin_dir, real_width, real_height, image_suffix):
"""
校验图片大小
:return:
"""
if not os.path.exists(origin_dir):
print("【警告】找不到目录{},即将创建".format(origin_dir))
os.makedirs(origin_dir)
print("开始校验原始图片集")
# 图片真实尺寸
real_size = (real_width, real_height)
# 图片名称列表和数量
img_list = os.listdir(origin_dir)
total_count = len(img_list)
print("原始集共有图片: {}张".format(total_count))
# 无效图片列表
bad_img = []
# 遍历所有图片进行验证
for index, img_name in enumerate(img_list):
file_path = os.path.join(origin_dir, img_name)
# 过滤图片不正确的后缀
if not img_name.endswith(image_suffix):
bad_img.append((index, img_name, "文件后缀不正确"))
continue
# 过滤图片标签不标准的情况
prefix, posfix = img_name.split("_")
if prefix == "" or posfix == "":
bad_img.append((index, img_name, "图片标签异常"))
continue
# 图片无法正常打开
try:
img = Image.open(file_path)
except OSError:
bad_img.append((index, img_name, "图片无法正常打开"))
continue
# 图片尺寸有异常
if real_size == img.size:
print("{} pass".format(index), end='\r')
else:
bad_img.append((index, img_name, "图片尺寸异常为:{}".format(img.size)))
print("====以下{}张图片有异常====".format(len(bad_img)))
if bad_img:
for b in bad_img:
print("[第{}张图片] [{}] [{}]".format(b[0], b[1], b[2]))
else:
print("未发现异常(共 {} 张图片)".format(len(img_list)))
print("========end")
return bad_img
def split(origin_dir, train_dir, test_dir, bad_imgs):
"""
分离训练集和测试集
:return:
"""
if not os.path.exists(origin_dir):
print("【警告】找不到目录{},即将创建".format(origin_dir))
os.makedirs(origin_dir)
print("开始分离原始图片集为:测试集(5%)和训练集(95%)")
# 图片名称列表和数量
img_list = os.listdir(origin_dir)
for img in bad_imgs:
img_list.remove(img)
total_count = len(img_list)
print("共分配{}张图片到训练集和测试集,其中{}张为异常留在原始目录".format(total_count, len(bad_imgs)))
# 创建文件夹
if not os.path.exists(train_dir):
os.mkdir(train_dir)
if not os.path.exists(test_dir):
os.mkdir(test_dir)
# 测试集
test_count = int(total_count*0.05)
test_set = set()
for i in range(test_count):
while True:
file_name = random.choice(img_list)
if file_name in test_set:
pass
else:
test_set.add(file_name)
img_list.remove(file_name)
break
test_list = list(test_set)
print("测试集数量为:{}".format(len(test_list)))
for file_name in test_list:
src = os.path.join(origin_dir, file_name)
dst = os.path.join(test_dir, file_name)
shutil.move(src, dst)
# 训练集
train_list = img_list
print("训练集数量为:{}".format(len(train_list)))
for file_name in train_list:
src = os.path.join(origin_dir, file_name)
dst = os.path.join(train_dir, file_name)
shutil.move(src, dst)
if os.listdir(origin_dir) == 0:
print("migration done")
def main():
with open("conf/sample_config.json", "r") as f:
sample_conf = json.load(f)
# 图片路径
origin_dir = sample_conf["origin_image_dir"]
new_dir = sample_conf["new_image_dir"]
train_dir = sample_conf["train_image_dir"]
test_dir = sample_conf["test_image_dir"]
# 图片尺寸
real_width = sample_conf["image_width"]
real_height = sample_conf["image_height"]
# 图片后缀
image_suffix = sample_conf["image_suffix"]
for image_dir in [origin_dir, new_dir]:
print(">>> 开始校验目录:[{}]".format(image_dir))
bad_images_info = verify(image_dir, real_width, real_height, image_suffix)
bad_imgs = []
for info in bad_images_info:
bad_imgs.append(info[1])
split(image_dir, train_dir, test_dir, bad_imgs)
if __name__ == '__main__':
main()