File size: 2,761 Bytes
aa24fe8 | 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 | import random
import numpy as np
import torch
from PIL import Image
#---------------------------------------------------------#
# 将图像转换成RGB图像，防止灰度图在预测时报错。
# 代码仅仅支持RGB图像的预测，所有其它类型的图像都会转化成RGB
#---------------------------------------------------------#
def cvtColor(image):
if len(np.shape(image)) == 3 and np.shape(image)[2] == 3:
return image
else:
image = image.convert('RGB')
return image
#---------------------------------------------------#
# 对输入图像进行resize
#---------------------------------------------------#
def resize_image(image, size):
w, h = size
new_image = image.resize((w, h), Image.BICUBIC)
return new_image
#---------------------------------------------------#
# 获得类
#---------------------------------------------------#
def get_classes(classes_path):
with open(classes_path, encoding='utf-8') as f:
class_names = f.readlines()
class_names = [c.strip() for c in class_names]
return class_names, len(class_names)
#---------------------------------------------------#
# 获得学习率
#---------------------------------------------------#
def get_lr(optimizer):
for param_group in optimizer.param_groups:
return param_group['lr']
#---------------------------------------------------#
# 设置种子
#---------------------------------------------------#
def seed_everything(seed=11):
random.seed(seed)
np.random.seed(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
torch.cuda.manual_seed_all(seed)
torch.backends.cudnn.deterministic = True
torch.backends.cudnn.benchmark = False
#---------------------------------------------------#
# 设置Dataloader的种子
#---------------------------------------------------#
def worker_init_fn(worker_id, rank, seed):
worker_seed = rank + seed
random.seed(worker_seed)
np.random.seed(worker_seed)
torch.manual_seed(worker_seed)
def preprocess_input(image):
image /= 255.0
return image
def show_config(**kwargs):
print('Configurations:')
print('-' * 70)
print('|%25s | %40s|' % ('keys', 'values'))
print('-' * 70)
for key, value in kwargs.items():
print('|%25s | %40s|' % (str(key), str(value)))
print('-' * 70)
def get_new_img_size(height, width, img_min_side=600):
if width <= height:
f = float(img_min_side) / width
resized_height = int(f * height)
resized_width = int(img_min_side)
else:
f = float(img_min_side) / height
resized_width = int(f * width)
resized_height = int(img_min_side)
return resized_height, resized_width
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