Mercurial Hosting > traffic-intelligence
annotate python/metadata.py @ 686:cdee6a3a47b4 dev
allowing alternate database and filename for classify-objects
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Tue, 09 Jun 2015 17:29:03 +0200 |
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children | 180b6b0231c0 |
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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 create_engine, Column, Integer, Float, DateTime, String, ForeignKey |
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7 from sqlalchemy.orm import relationship, backref, sessionmaker |
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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 idx = 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 class EnvironementalFactors(Base): |
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32 '''Represents any environmental factors that may affect the results, in particular |
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33 * changing weather conditions |
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34 * changing road configuration, geometry, signalization, etc. |
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35 ex: sunny, rainy, before counter-measure, after counter-measure''' |
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36 __tablename__ = 'environmental_factors' |
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37 idx = Column(Integer, primary_key=True) |
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38 startTime = Column(DateTime) |
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39 endTime = Column(DateTime) |
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40 description = Column(String) # eg sunny, before, after |
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41 siteIdx = Column(Integer, ForeignKey('sites.idx')) |
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42 |
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43 site = relationship("Site", backref=backref('environmental_factors', order_by = idx)) |
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44 |
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45 def __init__(self, startTime, endTime, description, site): |
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46 'startTime is passed as string in utils.datetimeFormat, eg 2011-06-22 10:00:39' |
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47 self.startTime = datetime.strptime(startTime, datetimeFormat) |
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48 self.endTime = datetime.strptime(endTime, datetimeFormat) |
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49 self.description = description |
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50 self.site = site |
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51 |
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52 class CameraView(Base): |
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53 __tablename__ = 'camera_views' |
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54 idx = Column(Integer, primary_key=True) |
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55 frameRate = Column(Float) |
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56 homographyFilename = Column(String) # path to homograph filename, relative to the site name |
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57 cameraCalibrationFilename = Column(String) # path to full camera calibration, relative to the site name |
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58 siteIdx = Column(Integer, ForeignKey('sites.idx')) |
424 | 59 homographyDistanceUnit = Column(String, default = 'm') # make sure it is default in the database |
60 configurationFilename = Column(String) # path to configuration .cfg file, relative to site name | |
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61 |
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62 site = relationship("Site", backref=backref('camera_views', order_by = idx)) |
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63 |
424 | 64 def __init__(self, frameRate, homographyFilename, cameraCalibrationFilename, site, configurationFilename): |
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65 self.frameRate = frameRate |
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66 self.homographyFilename = homographyFilename |
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67 self.site = site |
424 | 68 self.configurationFilename = configurationFilename |
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69 |
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70 def getHomographyFilename(self, relativeToSiteFilename = True): |
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71 if relativeToSiteFilename: |
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72 return self.site.getFilename()+path.sep+self.homographyFilename |
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73 else: |
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74 return self.homographyFilename |
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75 |
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76 class Alignment(Base): |
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77 __tablename__ = 'alignments' |
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78 idx = Column(Integer, primary_key=True) |
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79 cameraViewIdx = Column(Integer, ForeignKey('camera_views.idx')) |
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80 |
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81 cameraView = relationship("CameraView", backref=backref('alignments', order_by = idx)) |
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82 |
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83 def __init__(self, cameraView): |
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84 self.cameraView = cameraView |
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85 |
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86 class Point(Base): |
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87 __tablename__ = 'points' |
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88 alignmentIdx = Column(Integer, ForeignKey('alignments.idx'), primary_key=True) |
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89 index = Column(Integer, primary_key=True) # order of points in this alignment |
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90 x = Column(Float) |
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91 y = Column(Float) |
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92 |
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93 alignment = relationship("Alignment", backref=backref('points', order_by = index)) |
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94 |
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95 def __init__(self, alignmentIdx, index, x, y): |
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96 self.alignmentIdx = alignmentIdx |
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97 self.index = index |
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98 self.x = x |
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99 self.y = y |
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100 |
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101 class VideoSequence(Base): |
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102 __tablename__ = 'video_sequences' |
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103 idx = Column(Integer, primary_key=True) |
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104 name = Column(String) # path relative to the the site name |
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105 startTime = Column(DateTime) |
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106 duration = Column(Float) # video sequence duration |
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107 durationUnit = Column(String, default = 's') |
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108 siteIdx = Column(Integer, ForeignKey('sites.idx')) |
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109 cameraViewIdx = Column(Integer, ForeignKey('camera_views.idx')) |
424 | 110 configurationFilename = Column(String) |
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111 |
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112 site = relationship("Site", backref=backref('video_sequences', order_by = idx)) |
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113 cameraView = relationship("CameraView", backref=backref('video_sequences', order_by = idx)) |
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114 |
424 | 115 def __init__(self, name, startTime, duration, site, cameraView, configurationFilename = None): |
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116 'startTime is passed as string in utils.datetimeFormat, eg 2011-06-22 10:00:39' |
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117 self.name = name |
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118 self.startTime = datetime.strptime(startTime, datetimeFormat) |
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119 self.duration = duration |
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120 self.site = site |
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121 self.cameraView = cameraView |
424 | 122 self.configurationFilename = configurationFilename |
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123 |
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124 def getVideoSequenceFilename(self, relativeToSiteFilename = True): |
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125 if relativeToSiteFilename: |
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126 return self.site.getFilename()+path.sep+self.name |
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127 else: |
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128 return self.name |
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129 |
424 | 130 #def getConfigurationFilename(self): |
131 #'returns the local configuration filename, or the one of the camera view otherwise' | |
132 | |
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133 # 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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134 |
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135 # class SiteDescription(Base): # list of lines and polygons describing the site, eg for sidewalks, center lines |
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136 |
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137 # class Analysis(Base): # parameters necessary for processing the data: free form |
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138 # eg bounding box depends on camera view, tracking configuration depends on camera view |
424 | 139 # results: sqlite |
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140 |
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141 def createDatabase(filename): |
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142 'creates a session to query the filename' |
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143 engine = create_engine('sqlite:///'+filename) |
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144 Base.metadata.create_all(engine) |
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145 Session = sessionmaker(bind=engine) |
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146 return Session() |
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147 |
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148 def connectDatabase(filename): |
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149 'creates a session to query the filename' |
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150 engine = create_engine('sqlite:///'+filename) |
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151 Session = sessionmaker(bind=engine) |
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152 return Session() |
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153 |
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154 def initializeSites(session, directoryName): |
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155 '''Initializes default site objects and Camera Views |
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156 |
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157 eg somedirectory/montreal/ contains intersection1, intersection2, etc. |
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158 The site names would be somedirectory/montreal/intersection1, somedirectory/montreal/intersection2, etc.''' |
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159 from os import listdir, path |
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160 sites = [] |
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161 cameraViews = [] |
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162 names = listdir(directoryName) |
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163 for name in names: |
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164 if path.isdir(directoryName+'/'+name): |
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165 sites.append(Site(directoryName+'/'+name, None)) |
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166 cameraViews.append(CameraView(-1, None, None, sites[-1], None)) |
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167 session.add_all(sites) |
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168 session.add_all(cameraViews) |
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169 session.commit() |
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170 # TODO crawler for video files? |