Mercurial Hosting > traffic-intelligence
annotate python/metadata.py @ 853:95e7622b11be
added option to limit the number of loaded objects
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Thu, 22 Sep 2016 16:49:43 -0400 |
parents | 37d14818db89 |
children | f9c9457b60c2 |
rev | line source |
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1 # from moving import Point |
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2 |
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3 from datetime import datetime, timedelta |
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4 from os import path |
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5 from math import floor |
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6 |
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7 from numpy import zeros |
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8 |
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9 from sqlalchemy import orm, create_engine, Column, Integer, Float, DateTime, String, ForeignKey, Boolean, Interval |
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10 from sqlalchemy.orm import relationship, backref, sessionmaker |
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11 from sqlalchemy.ext.declarative import declarative_base |
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12 |
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13 from utils import datetimeFormat, removeExtension |
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14 from cvutils import computeUndistortMaps |
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15 from moving import TimeInterval |
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16 |
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17 Base = declarative_base() |
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18 |
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19 class Site(Base): |
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20 __tablename__ = 'sites' |
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21 idx = Column(Integer, primary_key=True) |
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22 name = Column(String) # same as path, relative to the database position |
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23 description = Column(String) # longer names, eg intersection of road1 and road2 |
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24 xcoordinate = Column(Float) # ideally moving.Point, but needs to be |
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25 ycoordinate = Column(Float) |
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26 mapImageFilename = Column(String) # path to filename, relative to site name, ie sitename/mapImageFilename |
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27 nUnitsPerPixel = Column(Float) # number of units of distance per pixel in map image |
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28 worldDistanceUnit = Column(String, default = 'm') # make sure it is default in the database |
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29 |
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30 def __init__(self, name, description = "", xcoordinate = None, ycoordinate = None, mapImageFilename = None, nUnitsPerPixel = 1., worldDistanceUnit = 'm'): |
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31 self.name = name |
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32 self.description = description |
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33 self.xcoordinate = xcoordinate |
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34 self.ycoordinate = ycoordinate |
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35 self.mapImageFilename = mapImageFilename |
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36 self.nUnitsPerPixel = nUnitsPerPixel |
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37 self.worldDistanceUnit = worldDistanceUnit |
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38 |
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39 def getFilename(self): |
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40 return self.name |
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41 |
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42 @staticmethod |
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43 def getSite(session, siteId): |
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44 'Returns the site(s) matching the index or the name' |
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45 if str.isdigit(siteId): |
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46 return session.query(Site).filter(Site.idx == int(siteId)).all() |
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47 else: |
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48 return session.query(Site).filter(Site.description.like('%'+siteId+'%')).all() |
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49 |
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50 |
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51 class EnvironementalFactors(Base): |
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52 '''Represents any environmental factors that may affect the results, in particular |
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53 * changing weather conditions |
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54 * changing road configuration, geometry, signalization, etc. |
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55 ex: sunny, rainy, before counter-measure, after counter-measure''' |
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56 __tablename__ = 'environmental_factors' |
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57 idx = Column(Integer, primary_key=True) |
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58 startTime = Column(DateTime) |
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59 endTime = Column(DateTime) |
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60 description = Column(String) # eg sunny, before, after |
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61 siteIdx = Column(Integer, ForeignKey('sites.idx')) |
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62 |
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63 site = relationship("Site", backref=backref('environmental_factors', order_by = idx)) |
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64 |
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65 def __init__(self, startTime, endTime, description, site): |
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66 'startTime is passed as string in utils.datetimeFormat, eg 2011-06-22 10:00:39' |
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67 self.startTime = datetime.strptime(startTime, datetimeFormat) |
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68 self.endTime = datetime.strptime(endTime, datetimeFormat) |
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69 self.description = description |
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70 self.site = site |
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71 |
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72 class CameraType(Base): |
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73 ''' Represents parameters of the specific camera used. |
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74 |
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75 Taken and adapted from tvalib''' |
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76 __tablename__ = 'camera_types' |
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77 idx = Column(Integer, primary_key=True) |
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78 name = Column(String) |
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79 resX = Column(Integer) |
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80 resY = Column(Integer) |
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81 frameRate = Column(Float) |
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82 frameRateTimeUnit = Column(String, default = 's') |
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83 intrinsicCameraMatrix00 = Column(Float) |
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84 intrinsicCameraMatrix01 = Column(Float) |
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85 intrinsicCameraMatrix02 = Column(Float) |
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86 intrinsicCameraMatrix10 = Column(Float) |
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87 intrinsicCameraMatrix11 = Column(Float) |
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88 intrinsicCameraMatrix12 = Column(Float) |
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89 intrinsicCameraMatrix20 = Column(Float) |
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90 intrinsicCameraMatrix21 = Column(Float) |
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91 intrinsicCameraMatrix22 = Column(Float) |
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92 distortionCoefficients0 = Column(Float) |
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93 distortionCoefficients1 = Column(Float) |
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94 distortionCoefficients2 = Column(Float) |
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95 distortionCoefficients3 = Column(Float) |
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96 distortionCoefficients4 = Column(Float) |
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97 undistortedImageMultiplication = Column(Float) |
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98 |
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99 def __init__(self, name, resX, resY, frameRate, frameRateTimeUnit = 's', trackingConfigurationFilename = None, intrinsicCameraMatrix = None, distortionCoefficients = None, undistortedImageMultiplication = None): |
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100 self.name = name |
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101 self.resX = resX |
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102 self.resY = resY |
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103 self.frameRate = frameRate |
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104 self.frameRateTimeUnit = frameRateTimeUnit |
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105 |
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106 if trackingConfigurationFilename is not None: |
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107 from storage import ProcessParameters |
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108 params = ProcessParameters(trackingConfigurationFilename) |
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109 self.intrinsicCameraMatrix = params.intrinsicCameraMatrix |
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110 self.distortionCoefficients = params.distortionCoefficients |
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111 self.undistortedImageMultiplication = params.undistortedImageMultiplication |
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112 else: |
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113 self.intrinsicCameraMatrix = intrinsicCameraMatrix |
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114 self.distortionCoefficients = distortionCoefficients |
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115 self.undistortedImageMultiplication = undistortedImageMultiplication |
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116 |
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117 if self.intrinsicCameraMatrix is not None and self.intrinsicCameraMatrix.size == 9: |
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118 self.intrinsicCameraMatrix00 = self.intrinsicCameraMatrix[0,0] |
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119 self.intrinsicCameraMatrix01 = self.intrinsicCameraMatrix[0,1] |
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120 self.intrinsicCameraMatrix02 = self.intrinsicCameraMatrix[0,2] |
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121 self.intrinsicCameraMatrix10 = self.intrinsicCameraMatrix[1,0] |
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122 self.intrinsicCameraMatrix11 = self.intrinsicCameraMatrix[1,1] |
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123 self.intrinsicCameraMatrix12 = self.intrinsicCameraMatrix[1,2] |
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124 self.intrinsicCameraMatrix20 = self.intrinsicCameraMatrix[2,0] |
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125 self.intrinsicCameraMatrix21 = self.intrinsicCameraMatrix[2,1] |
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126 self.intrinsicCameraMatrix22 = self.intrinsicCameraMatrix[2,2] |
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127 if self.distortionCoefficients is not None and len(self.distortionCoefficients) == 5: |
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128 self.distortionCoefficients0 = self.distortionCoefficients[0] |
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129 self.distortionCoefficients1 = self.distortionCoefficients[1] |
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130 self.distortionCoefficients2 = self.distortionCoefficients[2] |
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131 self.distortionCoefficients3 = self.distortionCoefficients[3] |
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132 self.distortionCoefficients4 = self.distortionCoefficients[4] |
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133 |
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134 @orm.reconstructor |
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135 def initOnLoad(self): |
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136 if self.intrinsicCameraMatrix00 is not None: |
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137 self.intrinsicCameraMatrix = zeros((3,3)) |
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138 self.intrinsicCameraMatrix[0,0] = self.intrinsicCameraMatrix00 |
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139 self.intrinsicCameraMatrix[0,1] = self.intrinsicCameraMatrix01 |
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140 self.intrinsicCameraMatrix[0,2] = self.intrinsicCameraMatrix02 |
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141 self.intrinsicCameraMatrix[1,0] = self.intrinsicCameraMatrix10 |
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142 self.intrinsicCameraMatrix[1,1] = self.intrinsicCameraMatrix11 |
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143 self.intrinsicCameraMatrix[1,2] = self.intrinsicCameraMatrix12 |
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144 self.intrinsicCameraMatrix[2,0] = self.intrinsicCameraMatrix20 |
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145 self.intrinsicCameraMatrix[2,1] = self.intrinsicCameraMatrix21 |
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146 self.intrinsicCameraMatrix[2,2] = self.intrinsicCameraMatrix22 |
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147 else: |
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148 self.intrinsicCameraMatrix = None |
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149 if self.distortionCoefficients0 is not None: |
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150 self.distortionCoefficients = [0]*5 |
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151 self.distortionCoefficients[0] = self.distortionCoefficients0 |
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152 self.distortionCoefficients[1] = self.distortionCoefficients1 |
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153 self.distortionCoefficients[2] = self.distortionCoefficients2 |
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154 self.distortionCoefficients[3] = self.distortionCoefficients3 |
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155 self.distortionCoefficients[4] = self.distortionCoefficients4 |
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156 else: |
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157 self.distortionCoefficients = None |
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158 |
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159 def computeUndistortMaps(self): |
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160 if self.undistortedImageMultiplication is not None and self.intrinsicCameraMatrix is not None and self.distortionCoefficients is not None: |
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161 self.map1, self.map2 = computeUndistortMaps(self.resX, self.resY, self.undistortedImageMultiplication, self.intrinsicCameraMatrix, self.distortionCoefficients) |
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162 else: |
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163 self.map1 = None |
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164 self.map2 = None |
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165 |
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166 class CameraView(Base): |
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167 __tablename__ = 'camera_views' |
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168 idx = Column(Integer, primary_key=True) |
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169 description = Column(String) |
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170 homographyFilename = Column(String) # path to homograph filename, relative to the site name |
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171 siteIdx = Column(Integer, ForeignKey('sites.idx')) |
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172 cameraTypeIdx = Column(Integer, ForeignKey('camera_types.idx')) |
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173 trackingConfigurationFilename = Column(String) # path to configuration .cfg file, relative to site name |
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174 maskFilename = Column(String) # path to mask file, relative to site name |
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175 virtual = Column(Boolean) # indicates it is not a real camera view, eg merged |
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176 |
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177 site = relationship("Site", backref=backref('sites', order_by = idx)) |
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178 cameraType = relationship('CameraType', backref=backref('camera_views', order_by = idx)) |
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179 |
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180 def __init__(self, description, homographyFilename, site, cameraType, trackingConfigurationFilename, maskFilename, virtual = False): |
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181 self.description = description |
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182 self.homographyFilename = homographyFilename |
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183 self.site = site |
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184 self.cameraType = cameraType |
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185 self.trackingConfigurationFilename = trackingConfigurationFilename |
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186 self.maskFilename = maskFilename |
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187 self.virtual = virtual |
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188 |
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189 def getHomographyFilename(self, relativeToSiteFilename = True): |
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190 if relativeToSiteFilename: |
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191 return self.site.getFilename()+path.sep+self.homographyFilename |
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192 else: |
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193 return self.homographyFilename |
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194 |
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195 def getTrackingConfigurationFilename(self, relativeToSiteFilename = True): |
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196 if relativeToSiteFilename: |
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197 return self.site.getFilename()+path.sep+self.trackingConfigurationFilename |
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198 else: |
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199 return self.trackingConfigurationFilename |
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200 |
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201 def getMaskFilename(self, relativeToSiteFilename = True): |
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202 if relativeToSiteFilename: |
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203 return self.site.getFilename()+path.sep+self.maskFilename |
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204 else: |
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205 return self.maskFilename |
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206 |
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207 def getTrackingParameters(self): |
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208 return ProcessParameters(self.getTrackingConfigurationFilename()) |
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209 |
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210 def getHomographyDistanceUnit(self): |
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211 return self.site.worldDistanceUnit |
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212 |
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213 class Alignment(Base): |
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214 __tablename__ = 'alignments' |
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215 idx = Column(Integer, primary_key=True) |
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216 cameraViewIdx = Column(Integer, ForeignKey('camera_views.idx')) |
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217 |
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218 cameraView = relationship("CameraView", backref=backref('alignments', order_by = idx)) |
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219 |
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220 def __init__(self, cameraView): |
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221 self.cameraView = cameraView |
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222 |
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223 class Point(Base): |
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224 __tablename__ = 'points' |
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225 alignmentIdx = Column(Integer, ForeignKey('alignments.idx'), primary_key=True) |
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226 index = Column(Integer, primary_key=True) # order of points in this alignment |
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227 x = Column(Float) |
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228 y = Column(Float) |
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229 |
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230 alignment = relationship("Alignment", backref=backref('points', order_by = index)) |
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231 |
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232 def __init__(self, alignmentIdx, index, x, y): |
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233 self.alignmentIdx = alignmentIdx |
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234 self.index = index |
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235 self.x = x |
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236 self.y = y |
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237 |
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238 class VideoSequence(Base): |
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239 __tablename__ = 'video_sequences' |
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240 idx = Column(Integer, primary_key=True) |
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241 name = Column(String) # path relative to the the site name |
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242 startTime = Column(DateTime) |
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243 duration = Column(Interval) # video sequence duration |
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244 databaseFilename = Column(String) # path relative to the the site name |
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245 virtual = Column(Boolean) # indicates it is not a real video sequence (no video file), eg merged |
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246 cameraViewIdx = Column(Integer, ForeignKey('camera_views.idx')) |
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247 |
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248 cameraView = relationship("CameraView", backref=backref('video_sequences', order_by = idx)) |
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249 |
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250 def __init__(self, name, startTime, duration, cameraView, databaseFilename = None, virtual = False): |
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251 '''startTime is passed as string in utils.datetimeFormat, eg 2011-06-22 10:00:39 |
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252 duration is a timedelta object''' |
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253 self.name = name |
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254 if isinstance(startTime, str): |
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255 self.startTime = datetime.strptime(startTime, datetimeFormat) |
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256 else: |
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257 self.startTime = startTime |
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258 self.duration = duration |
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259 self.cameraView = cameraView |
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260 if databaseFilename is None and len(self.name) > 0: |
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261 self.databaseFilename = removeExtension(self.name)+'.sqlite' |
846 | 262 else: |
263 self.databaseFilename = databaseFilename | |
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264 self.virtual = virtual |
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265 |
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266 def getVideoSequenceFilename(self, relativeToSiteFilename = True): |
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267 if relativeToSiteFilename: |
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268 return self.cameraView.site.getFilename()+path.sep+self.name |
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269 else: |
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270 return self.name |
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271 |
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272 def getDatabaseFilename(self, relativeToSiteFilename = True): |
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273 if relativeToSiteFilename: |
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274 return self.cameraView.site.getFilename()+path.sep+self.databaseFilename |
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275 else: |
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276 return self.databaseFilename |
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277 |
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278 def getTimeInterval(self): |
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279 return TimeInterval(self.startTime, self.startTime+self.duration) |
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280 |
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281 def containsInstant(self, instant): |
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282 'instant is a datetime' |
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283 return self.startTime <= instant and self.startTime+self.duration |
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284 |
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285 def intersection(self, startTime, endTime): |
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286 'returns the moving.TimeInterval intersection with [startTime, endTime]' |
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287 return TimeInterval.intersection(self.getTimeInterval(), TimeInterval(startTime, endTime)) |
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288 |
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289 def getFrameNum(self, instant): |
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290 'Warning, there is no check of correct time units' |
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291 if self.containsInstant(instant): |
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292 return int(floor((instant-self.startTime).seconds*self.cameraView.cameraType.frameRate)) |
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293 else: |
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294 return None |
424 | 295 |
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296 # 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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297 |
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298 # class SiteDescription(Base): # list of lines and polygons describing the site, eg for sidewalks, center lines |
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299 |
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300 # class Analysis(Base): # parameters necessary for processing the data: free form |
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301 # eg bounding box depends on camera view, tracking configuration depends on camera view |
424 | 302 # results: sqlite |
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303 |
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304 def createDatabase(filename): |
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305 'creates a session to query the filename' |
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306 engine = create_engine('sqlite:///'+filename) |
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307 Base.metadata.create_all(engine) |
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308 Session = sessionmaker(bind=engine) |
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309 return Session() |
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310 |
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311 def connectDatabase(filename): |
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312 'creates a session to query the filename' |
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313 engine = create_engine('sqlite:///'+filename) |
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314 Session = sessionmaker(bind=engine) |
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315 return Session() |
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316 |
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317 def initializeSites(session, directoryName): |
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318 '''Initializes default site objects and Camera Views |
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319 |
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320 eg somedirectory/montreal/ contains intersection1, intersection2, etc. |
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321 The site names would be somedirectory/montreal/intersection1, somedirectory/montreal/intersection2, etc.''' |
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322 from os import listdir, path |
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323 sites = [] |
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324 cameraViews = [] |
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325 names = listdir(directoryName) |
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326 for name in names: |
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327 if path.isdir(directoryName+'/'+name): |
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328 sites.append(Site(directoryName+'/'+name, None)) |
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329 cameraViews.append(CameraView(-1, None, None, sites[-1], None)) |
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330 session.add_all(sites) |
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331 session.add_all(cameraViews) |
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332 session.commit() |
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333 # TODO crawler for video files? |