Mercurial Hosting > traffic-intelligence
annotate scripts/safety-analysis.py @ 712:21aeadcfbabb
added script to test SQLite performance and impact of indices
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Thu, 23 Jul 2015 01:13:32 -0400 |
parents | 806df5f61c03 |
children | 6d89520e269f |
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script for safety analysis
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1 #! /usr/bin/env python |
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2 |
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3 import storage, prediction, events, moving |
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4 |
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5 import sys, argparse, random |
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6 |
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7 import matplotlib.pyplot as plt |
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8 import numpy as np |
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9 |
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10 # todo: very slow if too many predicted trajectories |
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11 # add computation of probality of unsucessful evasive action |
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12 |
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13 parser = argparse.ArgumentParser(description='The program processes indicators for all pairs of road users in the scene') |
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14 parser.add_argument('--cfg', dest = 'configFilename', help = 'name of the configuration file', required = True) |
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15 parser.add_argument('--prediction-method', dest = 'predictionMethod', help = 'prediction method (constant velocity (vector computation), constant velocity, normal adaptation, point set prediction)', choices = ['cvd', 'cv', 'na', 'ps']) |
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16 parser.add_argument('--display-cp', dest = 'displayCollisionPoints', help = 'display collision points', action = 'store_true') |
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17 parser.add_argument('-n', dest = 'nProcesses', help = 'number of processes to run in parallel', type = int, default = 1) |
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18 args = parser.parse_args() |
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20 params = storage.ProcessParameters(args.configFilename) |
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22 # parameters for prediction methods |
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23 if args.predictionMethod: |
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24 predictionMethod = args.predictionMethod |
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25 else: |
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26 predictionMethod = params.predictionMethod |
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27 |
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28 def accelerationDistribution(): |
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29 return random.triangular(-params.maxNormalAcceleration, params.maxNormalAcceleration, 0.) |
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30 def steeringDistribution(): |
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31 return random.triangular(-params.maxNormalSteering, params.maxNormalSteering, 0.) |
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32 |
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33 if predictionMethod == 'cvd': # TODO add cve: constant velocity exact (Sohail's) |
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34 predictionParameters = prediction.CVDirectPredictionParameters() |
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35 elif predictionMethod == 'cv': |
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36 predictionParameters = prediction.ConstantPredictionParameters(params.maxPredictedSpeed) |
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37 elif predictionMethod == 'na': |
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38 predictionParameters = prediction.NormalAdaptationPredictionParameters(params.maxPredictedSpeed, |
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39 params.nPredictedTrajectories, |
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40 accelerationDistribution, |
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41 steeringDistribution, |
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42 params.useFeaturesForPrediction) |
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43 elif predictionMethod == 'ps': |
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44 predictionParameters = prediction.PointSetPredictionParameters(params.maxPredictedSpeed) |
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45 # no else required, since parameters is required as argument |
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46 |
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47 # evasiveActionPredictionParameters = prediction.EvasiveActionPredictionParameters(params.maxPredictedSpeed, |
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48 # params.nPredictedTrajectories, |
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49 # params.minExtremeAcceleration, |
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50 # params.maxExtremeAcceleration, |
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51 # params.maxExtremeSteering, |
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52 # params.useFeaturesForPrediction) |
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53 |
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54 objects = storage.loadTrajectoriesFromSqlite(params.databaseFilename,'object') |
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55 if params.useFeaturesForPrediction: |
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56 features = storage.loadTrajectoriesFromSqlite(params.databaseFilename,'feature') # needed if normal adaptation |
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57 for obj in objects: |
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58 obj.setFeatures(features) |
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59 |
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60 interactions = events.createInteractions(objects) |
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61 for inter in interactions: |
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62 inter.computeIndicators() |
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63 inter.computeCrossingsCollisions(predictionParameters, params.collisionDistance, params.predictionTimeHorizon, params.crossingZones, nProcesses = args.nProcesses) |
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64 |
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65 storage.saveIndicators(params.databaseFilename, interactions) |
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66 |
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67 if args.displayCollisionPoints: |
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68 plt.figure() |
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69 allCollisionPoints = [] |
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70 for inter in interactions: |
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71 for collisionPoints in inter.collisionPoints.values(): |
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72 allCollisionPoints += collisionPoints |
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73 moving.Point.plotAll(allCollisionPoints) |
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74 plt.axis('equal') |
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75 |