Mercurial Hosting > traffic-intelligence
annotate python/metadata.py @ 420:def795d1120f
first work on video metadata
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Tue, 08 Oct 2013 18:26:20 -0400 |
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children | 4fce27946c60 |
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1 # from moving import Point |
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2 |
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3 from sqlalchemy import create_engine, Column, Integer, Float, DateTime, String, ForeignKey |
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4 from sqlalchemy.orm import relationship, backref |
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5 from sqlalchemy.ext.declarative import declarative_base |
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6 |
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7 Base = declarative_base() |
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8 |
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9 class Site(Base): |
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10 __tablename__ = 'sites' |
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11 id = Column(Integer, primary_key=True) |
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12 name = Column(String) # same as path, relative to the database position |
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13 description = Column(String) # longer names, eg intersection of road1 and road2 |
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14 xcoordinate = Column(Float) # ideally moving.Point, but needs to be |
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15 ycoordinate = Column(Float) |
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16 |
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17 def __init__(self, name, description = "", xcoordinate = None, ycoordinate = None): |
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18 self.name = name |
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19 self.description = description |
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20 self.xcoordinate = xcoordinate |
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21 self.ycoordinate = ycoordinate |
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22 |
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23 # def __repr__(self): |
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24 # return "<User('%s','%s', '%s')>" % (self.name, self.fullname, self.password) |
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25 |
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26 class EnvironementalFactors(Base): |
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27 '''Represents any environmental factors that may affect the results, in particular |
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28 * changing weather conditions |
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29 * changing road configuration, geometry, signalization, etc. |
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30 ex: sunny, rainy, before counter-measure, after counter-measure''' |
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31 __tablename__ = 'environmental_factors' |
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32 id = Column(Integer, primary_key=True) |
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33 startTime = Column(DateTime) |
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34 endTime = Column(DateTime) |
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35 description = Column(String) # eg sunny, before, after |
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36 siteId = Column(Integer, ForeignKey('sites.id')) |
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37 |
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38 site = relationship("Site", backref=backref('environmental_factors', order_by = id)) |
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39 |
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40 class CameraView(Base): |
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41 __tablename__ = 'camera_views' |
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42 id = Column(Integer, primary_key=True) |
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43 frameRate = Column(Float) |
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44 homographyFilename = Column(String) # path to homograph filename, relative to SiteId |
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45 siteId = Column(Integer, ForeignKey('sites.id')) |
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46 |
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47 site = relationship("Site", backref=backref('camera_views', order_by = id)) |
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48 |
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49 class VideoSequence(Base): |
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50 __tablename__ = 'video_sequences' |
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51 id = Column(Integer, primary_key=True) |
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52 startTime = Column(DateTime) |
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53 name = Column(String) # path that can be composed with the site name |
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54 startTime = Column(DateTime) |
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55 duration = Column(Float) # video sequence duration |
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56 siteId = Column(Integer, ForeignKey('sites.id')) |
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57 cameraViewId = Column(Integer, ForeignKey('camera_views.id')) |
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58 |
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59 site = relationship("Site", backref=backref('video_sequences', order_by = id)) |
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60 cameraView = relationship("CameraView", backref=backref('video_sequences', order_by = id)) |
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61 |
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62 # class SiteDescription(Base): # list of lines and polygons describing the site, eg for sidewalks, center lines |