Mercurial Hosting > traffic-intelligence

comparison scripts/display-synced-trajectories.py @ 832:02f2809c2f66

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work in progress on synced trajectory display
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Wed, 29 Jun 2016 17:57:21 -0400
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children 7058a40a4bbc
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831:a8ff35e6fb43 832:02f2809c2f66
1 #! /usr/bin/env python
2
3 import sys, argparse, os.path
4 from datetime import datetime, timedelta
5 from numpy import array
6 import cv2
7 import cvutils, utils, storage
8 from metadata import createDatabase, Site, VideoSequence
9
10 parser = argparse.ArgumentParser(description='The program displays several views of the same site synchronously.')
11 parser.add_argument('-i', dest = 'metadataFilename', help = 'name of the metadata file', required = True)
12 #parser.add_argument('-n', dest = 'siteId', help = 'site id or site name', required = True)
13 parser.add_argument('-d', dest = 'databaseFilename', help = 'name of the Sqlite database file', required = True)
14 parser.add_argument('-f', dest = 'startTime', help = 'time to start playing (format %Y-%m-%d %H:%M:%S, eg 2011-06-22 10:00:39)', required = True)
15 parser.add_argument('-t', dest = 'trajectoryType', help = 'type of trajectories to display', choices = ['feature', 'object'], default = 'object')
16 parser.add_argument('-r', dest = 'rescale', help = 'rescaling factor for the displayed image', default = 1., type = float)
17 parser.add_argument('-s', dest = 'step', help = 'display every s image', default = 1, type = int)
18
19 args = parser.parse_args()
20
21 session = createDatabase(args.metadataFilename)
22
23 mergedSequence = session.query(VideoSequence).filter(VideoSequence.databaseFilename == args.databaseFilename).first()
24 if mergedSequence is None:
25 print('Video sequence {} was not found in {}. Exiting'.format(args.databaseFilename, args.metadataFilename))
26 sys.exit()
27
28 dirname = os.path.split(args.metadataFilename)[0]
29
30 startTime = datetime.strptime(args.startTime, utils.datetimeFormat)
31 # TODO issue with framerate
32 if startTime > mergedSequence.startTime:
33 mergedFirstFrameNum = (startTime-mergedSequence.startTime).seconds*
34
35 videoSequences = session.query(VideoSequence).filter(VideoSequence.site == mergedSequence.site).filter(VideoSequence.startTime <= startTime).all()
36 videoSequences.remove(mergedSequence)
37 videoSequences = [v for v in videoSequences if v.containsInstant(startTime)]
38 filenames = [dirname+os.path.sep+v.getVideoSequenceFilename() for v in videoSequences]
39 firstFrameNums = [v.getFrameNum(startTime) for v in videoSequences]
40 windowNames = [v.cameraView.description for v in videoSequences]
41
42 objects = storage.loadTrajectoriesFromSqlite(dirname+os.path.sep+mergedSequence.getDatabaseFilename(), args.trajectoryType)
43
44 #def playVideo(filenames, windowNames = None, firstFrameNums = None, frameRate = -1, interactive = False, printFrames = True, text = None, rescale = 1., step = 1):
45 if len(filenames) == 0:
46 print('Empty filename list')
47 sys.exit()
48
49 if windowNames is None:
50 windowNames = ['frame{}'.format(i) for i in xrange(len(filenames))]
51 #wait = 5
52 #if rescale == 1.:
53 for windowName in windowNames:
54 cv2.namedWindow(windowName, cv2.WINDOW_NORMAL)
55 #if frameRate > 0:
56 # wait = int(round(1000./frameRate))
57 #if interactive:
58 wait = 0
59 step = 1
60 rescale = 1.
61 captures = [cv2.VideoCapture(fn) for fn in filenames]
62 if array([cap.isOpened() for cap in captures]).all():
63 key = -1
64 ret = True
65 nFramesShown = 0
66 if firstFrameNums is not None:
67 for i in xrange(len(captures)):
68 captures[i].set(cv2.cv.CV_CAP_PROP_POS_FRAMES, firstFrameNums[i])
69 while ret and not cvutils.quitKey(key):
70 rets = []
71 images = []
72 for cap in captures:
73 ret, img = cap.read()
74 rets.append(ret)
75 images.append(img)
76 if array(rets).all():
77 #if printFrames:
78 print('frame shown {0}'.format(nFramesShown))
79 for i in xrange(len(filenames)):
80 for obj in objects:
81 if obj.existsAtInstant():
82 #if text is not None:
83 # cv2.putText(images[i], text, (10,50), cv2.FONT_HERSHEY_PLAIN, 1, cvRed)
84 cvutils.cvImshow(windowNames[i], images[i], rescale) # cv2.imshow('frame', img)
85 key = cv2.waitKey(wait)
86 #if cvutils.saveKey(key):
87 # cv2.imwrite('image-{}.png'.format(frameNum), img)
88 nFramesShown += step
89 if step > 1:
90 for i in xrange(len(captures)):
91 captures.set(cv2.cv.CV_CAP_PROP_POS_FRAMES, firstFrameNums[i]+nFramesShown)
92 cv2.destroyAllWindows()
93 else:
94 print('Video captures for {} failed'.format(filenames))