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annotate scripts/merge-features.py @ 837:e01cabca4c55

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minor modifications to merge-features
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Wed, 06 Jul 2016 10:58:18 -0400
parents 7058a40a4bbc
children 75530d8c0090
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1 #! /usr/bin/env python
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3 import sys, argparse, os.path, sqlite3
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4 import cvutils, utils, moving, storage
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5 from metadata import createDatabase, Site, VideoSequence, CameraView
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6 from datetime import datetime, timedelta
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7
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8 parser = argparse.ArgumentParser(description='The program merges feature trajectories recorded from the same site synchronously between start and end time.')
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9 parser.add_argument('-i', dest = 'metadataFilename', help = 'name of the metadata file', required = True)
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10 parser.add_argument('-n', dest = 'siteId', help = 'site id or site name', required = True)
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11 parser.add_argument('-f', 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
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12 parser.add_argument('-l', dest = 'endTime', help = 'time to stop merging features (format %Y-%m-%d %H:%M:%S, eg 2011-06-22 10:00:39)')
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13 parser.add_argument('-o', dest = 'outputDBFilename', help = 'name of the output SQLite file', required = True)
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14
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15 args = parser.parse_args()
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16
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17 session = createDatabase(args.metadataFilename)
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18
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19 site = Site.getSite(session, args.siteId)
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20 if site is None:
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21 print('Site {} was not found in {}. Exiting'.format(args.siteId, args.metadataFilename))
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22 sys.exit()
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23 else:
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24 site = site[0]
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25
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26 startTime = datetime.strptime(args.startTime, utils.datetimeFormat)
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27 endTime = datetime.strptime(args.endTime, utils.datetimeFormat)
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28 processInterval = moving.TimeInterval(startTime, endTime)
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29 cameraViews = session.query(CameraView).filter(CameraView.site == site).filter(CameraView.virtual == False)
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30 videoSequences = session.query(VideoSequence).filter(VideoSequence.virtual == False).order_by(VideoSequence.startTime.asc()).all() #.order_by(VideoSequence.cameraViewIdx) .filter(VideoSequence.startTime <= startTime)
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31 videoSequences = [vs for vs in videoSequences if vs.cameraView in cameraViews]
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32 #timeIntervals = [v.intersection(startTime, endTime) for v in videoSequences]
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33 #cameraViews = set([v.cameraView for v in videoSequences])
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34
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35 videoSequences = {cv: [v for v in videoSequences if v.cameraView == cv] for cv in cameraViews}
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36 timeIntervals = {}
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37 for cv in videoSequences:
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38 timeIntervals[cv] = moving.TimeInterval.unionIntervals([v.getTimeInterval() for v in videoSequences[cv]])
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39
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40 # intersection of the time interval (union) for each camera view
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41 commonTimeInterval = timeIntervals.values()[0]
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42 for inter in timeIntervals.values()[1:]:
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43 commonTimeInterval = moving.TimeInterval.intersection(commonTimeInterval, inter)
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44 commonTimeInterval = moving.TimeInterval.intersection(commonTimeInterval, processInterval)
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46 if commonTimeInterval.empty():
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47 print('Empty time interval. Exiting')
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48 sys.exit()
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49
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50 if len(set([cv.cameraType.frameRate for cv in cameraViews])) > 1:
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51 print('Different framerates of the cameras ({}) are not handled yet. Exiting'.format([cv.cameraType.frameRate for cv in cameraViews]))
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52 else:
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53 frameRate = cv.cameraType.frameRate
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54
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55 try:
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56 outConnection = sqlite3.connect(args.outputDBFilename)
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57 outCursor = outConnection.cursor()
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58 storage.createTrajectoryTable(outCursor, 'positions')
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59 storage.createTrajectoryTable(outCursor, 'velocities')
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60 storage.createFeatureCorrespondenceTable(outCursor)
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61 outConnection.commit()
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62 except sqlite3.OperationalError as error:
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63 storage.printDBError(error)
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64 sys.exit()
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65
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66 dirname = os.path.split(args.metadataFilename)[0]
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67 if len(dirname) == 0:
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68 dirname = '.'
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69
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70 newTrajectoryId = -1
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71 # first frame num is commonTimeInterval
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72 for cv, vs in videoSequences.iteritems():
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73 print cv.idx, cv.description
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74 for videoSequence in vs:
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75 try:
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76 vsConnection = sqlite3.connect(dirname+os.path.sep+videoSequence.getDatabaseFilename())
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77 vsCursor = vsConnection.cursor()
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78 firstFrameNum = utils.deltaFrames(videoSequence.startTime, commonTimeInterval.first, frameRate)
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79 lastFrameNum = (commonTimeInterval.last-videoSequence.startTime).seconds*frameRate
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80 # positions table
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81 vsCursor.execute('SELECT * FROM positions WHERE frame_number BETWEEN {} AND {} ORDER BY trajectory_id'.format(firstFrameNum, lastFrameNum))
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82 featureIdCorrespondences = {}
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83 currentTrajectoryId = -1
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84 for row in vsCursor:
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85 if row[0] != currentTrajectoryId:
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86 currentTrajectoryId = row[0]
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87 newTrajectoryId += 1
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88 featureIdCorrespondences[currentTrajectoryId] = newTrajectoryId
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89 outCursor.execute(storage.insertTrajectoryQuery('positions'), (newTrajectoryId, row[1]-firstFrameNum, row[2], row[3]))
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90 # velocities table
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91 for row in vsCursor:
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92 outCursor.execute(storage.insertTrajectoryQuery('velocities'), (featureIdCorrespondences[row[0]], row[1]-firstFrameNum, row[2], row[3]))
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93 # saving the id correspondences
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94 for oldId, newId in featureIdCorrespondences.iteritems():
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95 outCursor.execute("INSERT INTO feature_correspondences (trajectory_id, source_dbname, db_trajectory_id) VALUES ({},\"{}\",{})".format(newId, videoSequence.name, oldId))
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96 outConnection.commit()
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97 except sqlite3.OperationalError as error:
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98 storage.printDBError(error)
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99
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100 # save the information of the new virtual sequence and camera view in the metadata
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101 mergedCameraView = CameraView('merged', None, site, cv.cameraType, None, None, virtual = True)
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102 session.add(mergedCameraView)
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103 session.add(VideoSequence('merged', commonTimeInterval.first, commonTimeInterval.last-commonTimeInterval.first, mergedCameraView, virtual = True))
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104 session.commit()