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comparison python/moving.py @ 726:43ae3a1af290

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added functionality to display matchings between ground truth and tracked objects
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Fri, 07 Aug 2015 13:07:53 -0400
parents e14e2101a5a9
children c6d4ea05a2d0
comparison
equal deleted inserted replaced
725:35bc5e30a53f 726:43ae3a1af290
1064 obj.velocities = self.velocities.getTrajectoryInInterval(trajectoryInterval) 1064 obj.velocities = self.velocities.getTrajectoryInInterval(trajectoryInterval)
1065 return obj 1065 return obj
1066 else: 1066 else:
1067 print 'The object does not exist at '+str(inter) 1067 print 'The object does not exist at '+str(inter)
1068 return None 1068 return None
1069
1070 def getObjectsInMask(self, mask, homography = None, minLength = 1):
1071 '''Returns new objects made of the positions in the mask
1072 mask is in the destination of the homography space'''
1073 if homography is not None:
1074 self.projectedPositions = self.positions.project(homography)
1075 else:
1076 self.projectedPositions = self.positions
1077 def inMask(positions, i, mask):
1078 p = positions[i]
1079 return mask[p.y, p.x] != 0.
1080
1081 #subTimeIntervals self.getFirstInstant()+i
1082 filteredIndices = [inMask(self.projectedPositions, i, mask) for i in range(int(self.length()))]
1083 # 'connected components' in subTimeIntervals
1084 l = 0
1085 intervalLabels = []
1086 prev = True
1087 for i in filteredIndices:
1088 if i:
1089 if not prev: # new interval
1090 l += 1
1091 intervalLabels.append(l)
1092 else:
1093 intervalLabels.append(-1)
1094 prev = i
1095 intervalLabels = array(intervalLabels)
1096 subObjects = []
1097 for l in set(intervalLabels):
1098 if l >= 0:
1099 if sum(intervalLabels == l) >= minLength:
1100 times = [self.getFirstInstant()+i for i in range(len(intervalLabels)) if intervalLabels[i] == l]
1101 subTimeInterval = TimeInterval(min(times), max(times))
1102 subObjects.append(self.getObjectInTimeInterval(subTimeInterval))
1103
1104 return subObjects
1069 1105
1070 def getPositions(self): 1106 def getPositions(self):
1071 return self.positions 1107 return self.positions
1072 1108
1073 def getVelocities(self): 1109 def getVelocities(self):