Mercurial Hosting > traffic-intelligence

comparison scripts/merge-features.py @ 828:14e4ad7c7420

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work on merging data for synchronized views
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Tue, 28 Jun 2016 17:18:45 -0400
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children 0ddcc41663f5
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827:f6d5da619307 828:14e4ad7c7420
1 #! /usr/bin/env python
2
3 import sys, argparse, os.path
4 import cvutils, utils, moving
5 from metadata import createDatabase, Site, VideoSequence
6 from datetime import datetime, timedelta
7
8 parser = argparse.ArgumentParser(description='The program merges feature trajectories recorded from the same site synchronously between start and end time.')
9 parser.add_argument('-i', dest = 'metadataFilename', help = 'name of the metadata file', required = True)
10 parser.add_argument('-n', dest = 'siteId', help = 'site id or site name', required = True)
11 parser.add_argument('--t1', dest = 'startTime', help = 'time to start merging features (format %Y-%m-%d %H:%M:%S, eg 2011-06-22 10:00:39)') # if not provided, take common time interval
12 parser.add_argument('--t2', dest = 'endTime', help = 'time to stop merging features (format %Y-%m-%d %H:%M:%S, eg 2011-06-22 10:00:39)')
13
14 args = parser.parse_args()
15
16 session = createDatabase(args.metadataFilename)
17
18 site = Site.getSite(session, args.siteId)
19 if site is None:
20 print('Site {} was not found in {}. Exiting'.format(args.siteId, args.metadataFilename))
21 sys.exit()
22 else:
23 site = site[0]
24
25 startTime = datetime.strptime(args.startTime, utils.datetimeFormat)
26 endTime = datetime.strptime(args.endTime, utils.datetimeFormat)
27 processInterval = moving.TimeInterval(startTime, endTime)
28 videoSequences = session.query(VideoSequence).filter(VideoSequence.site == site).order_by(VideoSequence.startTime.asc()).all() #.order_by(VideoSequence.cameraViewIdx) .filter(VideoSequence.startTime <= startTime)
29 #timeIntervals = [v.intersection(startTime, endTime) for v in videoSequences]
30
31 cameraViews = set([v.cameraView for v in videoSequences])
32
33 videoSequences = {cv: [v for v in videoSequences if v.cameraView == cv] for cv in cameraViews}
34 timeIntervals = {}
35 for cv in videoSequences:
36 timeIntervals[cv] = moving.TimeInterval.unionIntervals([v.getTimeInterval() for v in videoSequences[cv]])
37
38 commonTimeInterval = timeIntervals.values()[0]
39 for inter in timeIntervals.values()[1:]:
40 commonTimeInterval = moving.TimeInterval.intersection(commonTimeInterval, inter)
41 commonTimeInterval = moving.TimeInterval.intersection(commonTimeInterval, processInterval)
42
43 # for all camera view, for all video, select from positions and velocities where frame_number is in the right range and insert in new database
44
45 # should we save the information of the new "sequence" in the metadata?
46 #session.add(VideoSequence('merged', , timedelta(seconds = 31616./30.), laurierSite, laurierCameraViewSpot0))
47
48 #session.commit()