-
Notifications
You must be signed in to change notification settings - Fork 0
/
train.py
217 lines (107 loc) · 3.7 KB
/
train.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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
#Basic Imports
import os
import cv2
import torch
import numpy
import numpy as np
import pandas as pd
#Custom Imports
#from models import RoadNet
#Torch Imports
from torch.utils.data import Dataset, DataLoader
from torchvision import transforms, utils
from torchvision.transforms import transforms
# Hyper-parameter
num_epochs = 100
batch_size = 5
#Dataset
class OttawaDataset(Dataset):
def __init__(self, csv_file, root_dir, transform = None):
self.csv_data = pd.read_csv(csv_file)
self.root_dir = root_dir
self.transform = transform
'''
-csv_file:
-> folder_name [each image is stored in seperate folder]
-> original_img [name of original training image] - .tif
-edge.png
-segmentation.png
-centerline.png
'''
def __len__(self):
return len(self.csv_data)
def __getitem__(self, index):
dir_path = os.path.dirname(os.path.realpath(__file__))+'/'
image_path = os.path.join(self.root_dir, str(self.csv_data.iloc[index,0]), self.csv_data.iloc[index,1])
edge_path = os.path.join(self.root_dir, str(self.csv_data.iloc[index,0]), "edge.png")
segmentation_path = os.path.join(self.root_dir, str(self.csv_data.iloc[index,0]), "segmentation.png")
centerline_path = os.path.join(self.root_dir, str(self.csv_data.iloc[index,0]), "centerline.png")
image = cv2.imread(dir_path+image_path)
edge_img = cv2.imread(dir_path+edge_path)
segmentation_img = cv2.imread(dir_path+segmentation_path)
centerline_img = cv2.imread(dir_path+centerline_path)
if self.transform:
image = self.transform(image)
return [image,edge_img,segmentation_img,centerline_img]
#Data Transform
class Resize(object):
def __init__(self, output_size):
self.output_size = output_size
def __call__(self, img, edge_img, segmentation_img, centerline_img):
H,W = image.shape
print(H,W)
#Get ratio to resize
#Get resized dimentions
#Apply to images and store
class Crop(object):
def __init__(self,output_size):
self.output_size = output_size
def __call__(self, img, edge_img, segmentation_img, centerline_img):
#Above step makes sure that rest of images, edge, segent, centerline are all lined up with the original
#Once done they can be cut into smaller parts
#Divide images into chunks of data
#Reshaping Images
#Converting to tensors
# why the above 2 steps needed ?
class ToTensor(object): #Transforms from cv2 array data to tensor, always needed to do
def __init__(self):
self.output_size = ""#output_size
def __call__(self):
""
data_transform = transforms.Compose([
Resize(256),
Crop(128),
transforms.ToTensor(), # WHy need to convert tot tensor ?
transforms.normalize() # Why good idea to normalize data
])
# Data Loader
dataset = OttawaDataset(csv_file = "data/ottawa.csv",
root_dir = "data/Ottawa-Dataset/",
transform= data_transform)
print(dataset.__getitem__(1))
print(dataset.__len__())
train_loader = DataLoader(dataset = dataset, batch_size = batch_size, shuffle = True)
#train_set, test_set = torch.utils.data.random_split(dataset,[20000,5000])
#def get_mean_std(loader):
print(train_loader)
d_iter = iter(train_loader)
print(d_iter)
data = next(d_iter)
print(data)
cv2.imshow("image 1", my_image_1)
cv2.imshow("image 2", my_image_2)
cv2.waitKey(0)
#Learning Rate Scheduler, after optimizer update
'''
# Roadnet Model
model = Module()
# loss and optimizer
#Construct Loss function and optimizer, model.parameters() will contain lernable paramerters of 2 nn.Linear layers
criterion = nn.BCELoss()
optimizer = torch.optim.SGD(model.parameeters(), lr = 0.01)
#Strat Training Network
for epochs in range(num_epochs):
losses = []
for i in enumerate(data_loader):
pass
'''