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1 #! /usr/bin/env python
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2 '''Various utilities to load data saved by the POLY new output(s)'''
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3 import sys
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4 import utils
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5 from moving import TimeInterval
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6 import numpy as np
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7
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8 __metaclass__ = type
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9
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10 # inputs variables
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11 #dirname= 'G:/0-phdstart/Code/trial/indicatorsNew/'
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12 #extension= '-indicatorsNew.csv'
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13 #indicatorsNames= {1:'Distance',2:'Cosine',3:'collision Course Angle',4:'Velocity Cosine',5:'Velocity Angle',6:'Speed Differential',7:'Collision Probability',8:'Severity Index',9:'TTC'}
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14 ''' min Distance case'''
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15 dirname= 'G:/0-phdstart/Code/trial/minDistanceIndicator/'
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16 extension= '-minDistanceInd.csv'
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17 indicatorsNames= {1:'minDistance'}
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18
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19 def loadNewInteractions(videoFilename,interactionType, roaduserNum1,roaduserNum2, selectedIndicators=[]):
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20 '''Loads interactions from the POLY traffic event format'''
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21 from events import Interaction
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22 from indicators import SeverityIndicator
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23 #filename= dirname + videoFilename + extension
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24 filename= dirname + interactionType+ '-' + videoFilename + extension # case of min distance todo: change the saving format to be matched with all outputs
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25 file = utils.openCheck(filename)
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26 if (not file):
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27 return []
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28 interactions = []
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29 interactionNum = 0
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30 data= np.loadtxt(filename)
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31 indicatorFrameNums= data[:,0]
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32 inter = Interaction(interactionNum, TimeInterval(indicatorFrameNums[0],indicatorFrameNums[-1]), roaduserNum1, roaduserNum2)
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33 inter.addVideoFilename(videoFilename)
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34 inter.addInteractionType(interactionType)
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35 for key in indicatorsNames.keys():
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36 values= {}
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37 for i,t in enumerate(indicatorFrameNums):
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38 values[t] = data[i,key]
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39 inter.addIndicator(SeverityIndicator(indicatorsNames[key], values))
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40 if selectedIndicators !=[]:
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41 values= {}
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42 for i,t in enumerate(indicatorFrameNums):
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43 values[t] = [data[i,index] for index in selectedIndicators]
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44 inter.addIndicator(SeverityIndicator('selectedIndicators', values))
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45
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46 interactions.append(inter)
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47 file.close()
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48 return interactions
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49
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