-
Notifications
You must be signed in to change notification settings - Fork 94
/
post.py
executable file
·205 lines (165 loc) · 6.11 KB
/
post.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
#!/usr/bin/env python3
"""Post-processing the output of neural network
Usage:
post.py [options] <input-dir> <output-dir>
post.py ( -h | --help )
Examples:
post.py logs/logname/npz/000336000 result/logname
Arguments:
input-dir Directory that stores the npz
output-dir Output directory
Options:
-h --help Show this screen.
--plot Generate images besides npz files
--thresholds=<thresholds> A comma-separated list for thresholding
[default: 0.006,0.010,0.015]
"""
import os
import sys
import glob
import math
import os.path as osp
import cv2
import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt
from docopt import docopt
from lcnn.utils import parmap
cmap = plt.get_cmap("jet")
norm = mpl.colors.Normalize(vmin=0.92, vmax=1.02)
sm = plt.cm.ScalarMappable(cmap=cmap, norm=norm)
sm.set_array([])
def c(x):
return sm.to_rgba(x)
def imshow(im):
plt.close()
sizes = im.shape
height = float(sizes[0])
width = float(sizes[1])
fig = plt.figure()
fig.set_size_inches(width / height, 1, forward=False)
ax = plt.Axes(fig, [0.0, 0.0, 1.0, 1.0])
ax.set_axis_off()
fig.add_axes(ax)
plt.xlim([-0.5, sizes[1] - 0.5])
plt.ylim([sizes[0] - 0.5, -0.5])
plt.imshow(im)
def pline(x1, y1, x2, y2, x, y):
px = x2 - x1
py = y2 - y1
dd = px * px + py * py
u = ((x - x1) * px + (y - y1) * py) / max(1e-9, float(dd))
dx = x1 + u * px - x
dy = y1 + u * py - y
return dx * dx + dy * dy
def psegment(x1, y1, x2, y2, x, y):
px = x2 - x1
py = y2 - y1
dd = px * px + py * py
u = max(min(((x - x1) * px + (y - y1) * py) / float(dd), 1), 0)
dx = x1 + u * px - x
dy = y1 + u * py - y
return dx * dx + dy * dy
def plambda(x1, y1, x2, y2, x, y):
px = x2 - x1
py = y2 - y1
dd = px * px + py * py
return ((x - x1) * px + (y - y1) * py) / max(1e-9, float(dd))
def process(lines, scores, threshold=0.01, tol=1e9, do_clip=False):
nlines, nscores = [], []
for (p, q), score in zip(lines, scores):
start, end = 0, 1
for a, b in nlines:
if (
min(
max(pline(*p, *q, *a), pline(*p, *q, *b)),
max(pline(*a, *b, *p), pline(*a, *b, *q)),
)
> threshold ** 2
):
continue
lambda_a = plambda(*p, *q, *a)
lambda_b = plambda(*p, *q, *b)
if lambda_a > lambda_b:
lambda_a, lambda_b = lambda_b, lambda_a
lambda_a -= tol
lambda_b += tol
# case 1: skip (if not do_clip)
if start < lambda_a and lambda_b < end:
continue
# not intersect
if lambda_b < start or lambda_a > end:
continue
# cover
if lambda_a <= start and end <= lambda_b:
start = 10
break
# case 2 & 3:
if lambda_a <= start and start <= lambda_b:
start = lambda_b
if lambda_a <= end and end <= lambda_b:
end = lambda_a
if start >= end:
break
if start >= end:
continue
nlines.append(np.array([p + (q - p) * start, p + (q - p) * end]))
nscores.append(score)
return np.array(nlines), np.array(nscores)
def main():
args = docopt(__doc__)
files = sorted(glob.glob(osp.join(args["<input-dir>"], "*.npz")))
inames = sorted(glob.glob("data/wireframe/valid-images/*.jpg"))
gts = sorted(glob.glob("data/wireframe/valid/*.npz"))
prefix = args["<output-dir>"]
inputs = list(zip(files, inames, gts))
thresholds = list(map(float, args["--thresholds"].split(",")))
def handle(allname):
fname, iname, gtname = allname
print("Processing", fname)
im = cv2.imread(iname)
with np.load(fname) as f:
lines = f["lines"]
scores = f["score"]
with np.load(gtname) as f:
gtlines = f["lpos"][:, :, :2]
gtlines[:, :, 0] *= im.shape[0] / 128
gtlines[:, :, 1] *= im.shape[1] / 128
for i in range(1, len(lines)):
if (lines[i] == lines[0]).all():
lines = lines[:i]
scores = scores[:i]
break
lines[:, :, 0] *= im.shape[0] / 128
lines[:, :, 1] *= im.shape[1] / 128
diag = (im.shape[0] ** 2 + im.shape[1] ** 2) ** 0.5
for threshold in thresholds:
nlines, nscores = process(lines, scores, diag * threshold, 0, False)
outdir = osp.join(prefix, f"{threshold:.3f}".replace(".", "_"))
os.makedirs(outdir, exist_ok=True)
npz_name = osp.join(outdir, osp.split(fname)[-1])
PLTOPTS = {"color": "#33FFFF", "s": 1.2, "edgecolors": "none", "zorder": 5}
if args["--plot"]:
# plot gt
imshow(im[:, :, ::-1])
for (a, b) in gtlines:
plt.plot([a[1], b[1]], [a[0], b[0]], c="orange", linewidth=0.5)
plt.scatter(a[1], a[0], *PLTOPTS)
plt.scatter(b[1], b[0], *PLTOPTS)
plt.savefig(npz_name.replace(".npz", ".png"), dpi=500, bbox_inches=0)
thres = [0.97, 0.98, 0.99]
for i, t in enumerate(thres):
imshow(im[:, :, ::-1])
for (a, b), s in zip(nlines[nscores > t], nscores[nscores > t]):
plt.plot([a[1], b[1]], [a[0], b[0]], c=c(s), linewidth=0.5)
plt.scatter(a[1], a[0], *PLTOPTS)
plt.scatter(b[1], b[0], *PLTOPTS)
plt.savefig(
npz_name.replace(".npz", f"_{i}.png"), dpi=500, bbox_inches=0
)
nlines[:, :, 0] *= 128 / im.shape[0]
nlines[:, :, 1] *= 128 / im.shape[1]
np.savez_compressed(npz_name, lines=nlines, score=nscores)
parmap(handle, inputs, 12)
if __name__ == "__main__":
main()