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annotate python/metadata.py @ 424:e74a09bddb6d

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new fields
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Thu, 31 Oct 2013 15:25:21 -0400
parents 67c7ff5d6b26
children a31dde19caa8
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420
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1 # from moving import Point
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2
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3 from datetime import datetime
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4 from os import path
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5
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6 from sqlalchemy import Column, Integer, Float, DateTime, String, ForeignKey
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7 from sqlalchemy.orm import relationship, backref
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8 from sqlalchemy.ext.declarative import declarative_base
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9
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10 from utils import datetimeFormat
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11
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12 Base = declarative_base()
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13
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14 class Site(Base):
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15 __tablename__ = 'sites'
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16 id = Column(Integer, primary_key=True)
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17 name = Column(String) # same as path, relative to the database position
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18 description = Column(String) # longer names, eg intersection of road1 and road2
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19 xcoordinate = Column(Float) # ideally moving.Point, but needs to be
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20 ycoordinate = Column(Float)
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21
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22 def __init__(self, name, description = "", xcoordinate = None, ycoordinate = None):
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23 self.name = name
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24 self.description = description
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25 self.xcoordinate = xcoordinate
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26 self.ycoordinate = ycoordinate
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27
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28 def getFilename(self):
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29 return self.name
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30
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31 # def __repr__(self):
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32 # return "<User('%s','%s', '%s')>" % (self.name, self.fullname, self.password)
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33
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34 class EnvironementalFactors(Base):
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35 '''Represents any environmental factors that may affect the results, in particular
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36 * changing weather conditions
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37 * changing road configuration, geometry, signalization, etc.
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38 ex: sunny, rainy, before counter-measure, after counter-measure'''
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39 __tablename__ = 'environmental_factors'
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40 id = Column(Integer, primary_key=True)
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41 startTime = Column(DateTime)
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42 endTime = Column(DateTime)
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43 description = Column(String) # eg sunny, before, after
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44 siteId = Column(Integer, ForeignKey('sites.id'))
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45
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46 site = relationship("Site", backref=backref('environmental_factors', order_by = id))
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47
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48 def __init__(self, startTime, endTime, description, site):
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49 'startTime is passed as string in utils.datetimeFormat, eg 2011-06-22 10:00:39'
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50 self.startTime = datetime.strptime(startTime, datetimeFormat)
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51 self.endTime = datetime.strptime(endTime, datetimeFormat)
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52 self.description = description
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53 self.site = site
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54
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55 class CameraView(Base):
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56 __tablename__ = 'camera_views'
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57 id = Column(Integer, primary_key=True)
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58 frameRate = Column(Float)
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59 homographyFilename = Column(String) # path to homograph filename, relative to the site name
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60 cameraCalibrationFilename = Column(String) # path to full camera calibration, relative to the site name
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61 siteId = Column(Integer, ForeignKey('sites.id'))
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62 homographyDistanceUnit = Column(String, default = 'm') # make sure it is default in the database
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63 configurationFilename = Column(String) # path to configuration .cfg file, relative to site name
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64
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65 site = relationship("Site", backref=backref('camera_views', order_by = id))
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66
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67 def __init__(self, frameRate, homographyFilename, cameraCalibrationFilename, site, configurationFilename):
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68 self.frameRate = frameRate
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69 self.homographyFilename = homographyFilename
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70 self.site = site
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71 self.configurationFilename = configurationFilename
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72
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73 def getHomographyFilename(self, relativeToSiteFilename = True):
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74 if relativeToSiteFilename:
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75 return self.site.getFilename()+path.sep+self.homographyFilename
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76 else:
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77 return self.homographyFilename
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78
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79 class VideoSequence(Base):
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80 __tablename__ = 'video_sequences'
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81 id = Column(Integer, primary_key=True)
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82 name = Column(String) # path relative to the the site name
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83 startTime = Column(DateTime)
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84 duration = Column(Float) # video sequence duration
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85 durationUnit = Column(String, default = 's')
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86 siteId = Column(Integer, ForeignKey('sites.id'))
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87 cameraViewId = Column(Integer, ForeignKey('camera_views.id'))
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88 configurationFilename = Column(String)
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89
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90 site = relationship("Site", backref=backref('video_sequences', order_by = id))
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91 cameraView = relationship("CameraView", backref=backref('video_sequences', order_by = id))
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92
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93 def __init__(self, name, startTime, duration, site, cameraView, configurationFilename = None):
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94 'startTime is passed as string in utils.datetimeFormat, eg 2011-06-22 10:00:39'
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95 self.name = name
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96 self.startTime = datetime.strptime(startTime, datetimeFormat)
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97 self.duration = duration
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98 self.site = site
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99 self.cameraView = cameraView
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100 self.configurationFilename = configurationFilename
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101
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102 def getVideoSequenceFilename(self, relativeToSiteFilename = True):
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103 if relativeToSiteFilename:
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104 return self.site.getFilename()+path.sep+self.name
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105 else:
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106 return self.name
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107
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108 #def getConfigurationFilename(self):
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109 #'returns the local configuration filename, or the one of the camera view otherwise'
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110
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111 # add class for Analysis: foreign key VideoSequenceId, dataFilename, configFilename (get the one from camera view by default), mask? (no, can be referenced in the tracking cfg file)
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112
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113 # class SiteDescription(Base): # list of lines and polygons describing the site, eg for sidewalks, center lines
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114
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115 # class Analysis(Base): # parameters necessary for processing the data: free form
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116 # eg bounding box depends on camera view, tracking configuration depends on camera view
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117 # results: sqlite
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118
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119 def createDatabases(engine):
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120 Base.metadata.create_all(engine)