-
-
Notifications
You must be signed in to change notification settings - Fork 19
/
LucasKanade.py
executable file
·48 lines (35 loc) · 1.22 KB
/
LucasKanade.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
#!/usr/bin/env python
"""
This function isn't working yet.
"""
import imageio
from scipy.ndimage.filters import gaussian_filter
from argparse import ArgumentParser
from pyoptflow import LucasKanade, getPOI, gaussianWeight
from pyoptflow import getimgfiles
from pyoptflow.plots import compareGraphsLK
def main():
p = ArgumentParser(description="Pure Python Lucas Kanade Optical Flow")
p.add_argument("stem", help="path/stem of files to analyze")
p.add_argument("pat", help="pattern glob")
p = p.parse_args()
lucas_kanade(p.stem, p.pat)
def lucas_kanade(stem, pat: str, kernel: int = 5, Nfilter: int = 7):
flist = getimgfiles(stem, pat)
# %% priming read
im1 = imageio.imread(flist[0], as_gray=True)
# %% evaluate the first frame's POI
X = im1.shape[1] // 16
Y = im1.shape[0] // 16
poi = getPOI(X, Y, kernel)
# % get the weights
W = gaussianWeight(kernel)
# %% loop over all images in directory
for i in range(1, len(flist)):
im2 = imageio.imread(flist[i], as_gray=True)
im2 = gaussian_filter(im2, Nfilter)
V = LucasKanade(im1, im2, kernel, poi, W)
compareGraphsLK(im1, im2, poi, V)
im1 = im2.copy()
if __name__ == "__main__":
main()