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