Mercurial > hg > nsaunier > traffic-intelligence

comparison c/Feature.cpp @ 129:4742b2b6d851

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created basic feature saving code
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Wed, 17 Aug 2011 17:14:00 -0400
parents
children 45c64e68053c
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128:536510f60854 129:4742b2b6d851
1 #include "Feature.hpp"
2
3 #include "opencv2/core/core.hpp"
4
5 using namespace std;
6 using namespace cv;
7
8 void FeatureTrajectory::addPoint(const int& frameNum, const Point2f& p) {
9 positions.add(frameNum, p);
10 computeMotionData(frameNum);
11 }
12
13 // protected
14
15 void FeatureTrajectory::computeMotionData(const int& frameNum) {
16 unsigned int nPositions = positions.size();
17 if (nPositions >= 3) {
18 Point2f displacement = positions[nPositions-1] - positions[nPositions-2];
19 velocities.add(frameNum, displacement);
20 float dist = norm(displacement);
21 displacementDistances.push_back(dist);
22 } else if (nPositions == 2) {
23 Point2f displacement = positions[1] - positions[0];
24 velocities.add(frameNum-1, displacement);
25 velocities.add(frameNum, displacement);
26 float dist = norm(displacement);
27 displacementDistances.push_back(dist);
28 displacementDistances.push_back(dist);
29 }
30 }