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