[122] | 1 | // created: 2012/04/12
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| 2 | // filename: OpticalFlow.cpp
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| 3 | //
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| 4 | // author: Guillaume Sanahuja
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| 5 | // Copyright Heudiasyc UMR UTC/CNRS 7253
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| 6 | //
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| 7 | // version: $Id: $
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| 8 | //
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| 9 | // purpose: calcul flux optique lk
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| 10 | //
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| 11 | //
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| 12 | /*********************************************************************/
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| 13 |
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| 14 | #include "OpticalFlow.h"
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| 15 | #include "OpticalFlowData.h"
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| 16 | #include <cvimage.h>
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| 17 | #include <Layout.h>
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| 18 | #include <GroupBox.h>
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| 19 | #include <SpinBox.h>
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| 20 | //#include <algorithm>
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| 21 | #include <OneAxisRotation.h>
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| 22 | #include <Vector3D.h>
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| 23 | #include <typeinfo>
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| 24 |
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| 25 | #define LEVEL_PYR 2
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| 26 |
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| 27 | using std::string;
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| 28 | using std::swap;
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| 29 | using namespace flair::core;
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| 30 | using namespace flair::gui;
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| 31 |
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| 32 | namespace flair
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| 33 | {
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| 34 | namespace filter
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| 35 | {
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| 36 |
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| 37 | OpticalFlow::OpticalFlow(const IODevice* parent,const LayoutPosition* position,string name) : IODevice(parent,name)
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| 38 | {
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| 39 | Printf("optical flow: voir pour faire du multiple output\n");//pour pts A et B, found et error
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| 40 |
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| 41 | try{
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| 42 | cvimage::Type const &imageType=dynamic_cast<cvimage::Type const &>(parent->GetOutputDataType());
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| 43 | pyr=cvCreateImage(cvSize(imageType.GetWidth(),imageType.GetHeight()),IPL_DEPTH_8U,1);
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| 44 | pyr_old=cvCreateImage(cvSize(imageType.GetWidth(),imageType.GetHeight()),IPL_DEPTH_8U,1);
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| 45 |
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| 46 | } catch(std::bad_cast& bc) {
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| 47 | Err("io type mismatch\n");
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| 48 | pyr=NULL;
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| 49 | pyr_old=NULL;
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| 50 | }
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| 51 |
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| 52 | is_init=false;
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| 53 |
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| 54 | GroupBox* reglages_groupbox=new GroupBox(position,name);
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[144] | 55 | rotation=new OneAxisRotation(reglages_groupbox->NewRow(),"post rotation");
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| 56 | max_features=new SpinBox(reglages_groupbox->NewRow(),"max features:",1,65535,1,1);
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[122] | 57 |
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| 58 | output=new OpticalFlowData(parent,max_features->Value());
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| 59 |
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| 60 | pointsA=(CvPoint *)cvAlloc(max_features->Value()*sizeof(CvPoint));
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| 61 | pointsB=(CvPoint *)cvAlloc(max_features->Value()*sizeof(CvPoint));
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| 62 |
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| 63 | found_feature=(char *)cvAlloc(max_features->Value()*sizeof(char));
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| 64 | feature_error=(unsigned int *)cvAlloc(max_features->Value()*sizeof(unsigned int));
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| 65 | }
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| 66 |
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| 67 | OpticalFlow::~OpticalFlow(void)
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| 68 | {
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| 69 | cvReleaseImage(&pyr);
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| 70 | cvReleaseImage(&pyr_old);
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| 71 | cvFree(&pointsA);
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| 72 | cvFree(&pointsB);
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| 73 | cvFree(&found_feature);
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| 74 | cvFree(&feature_error);
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| 75 | }
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| 76 |
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| 77 | void OpticalFlow::UpdateFrom(const io_data *data)
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| 78 | {
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| 79 | IplImage *gimg=((cvimage*)data)->img;
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| 80 | IplImage *gimg_old=((cvimage*)data->Prev(1))->img;
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| 81 |
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| 82 | unsigned int count;
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| 83 | CvSize window = cvSize(3,3);
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| 84 | CvTermCriteria termination_criteria = cvTermCriteria( CV_TERMCRIT_ITER | CV_TERMCRIT_EPS, 20, .3 );
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| 85 | unsigned int i;
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| 86 |
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[144] | 87 | if(max_features->ValueChanged()==true) {
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[122] | 88 | cvFree(&pointsA);
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| 89 | cvFree(&pointsB);
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| 90 | cvFree(&found_feature);
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| 91 | cvFree(&feature_error);
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| 92 | pointsA=(CvPoint *)cvAlloc(max_features->Value()*sizeof(CvPoint));
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| 93 | pointsB=(CvPoint *)cvAlloc(max_features->Value()*sizeof(CvPoint));
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| 94 | found_feature=(char *)cvAlloc(max_features->Value()*sizeof(char));
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| 95 | feature_error=(unsigned int *)cvAlloc(max_features->Value()*sizeof(unsigned int));
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| 96 |
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| 97 | output->Resize(max_features->Value());
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| 98 | }
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| 99 | /*
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| 100 | if(is_init==false)
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| 101 | {
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| 102 | data->GetMutex();
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| 103 | //init image old
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| 104 | dspPyrDown(gimg,pyr_old,LEVEL_PYR);
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| 105 | data->ReleaseMutex();
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| 106 | is_init=true;
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| 107 | printf("ajouter mise a 0 des points\n");
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| 108 | return;
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| 109 | }
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| 110 |
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| 111 | data->GetMutex();
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| 112 | data->Prev(1)->GetMutex();
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| 113 |
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| 114 | //select good features
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| 115 | count=max_features->Value();
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| 116 | dspGoodFeaturesToTrack(gimg_old,pointsA,&count,0.08,5);
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| 117 | //pyramide
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| 118 | dspPyrDown(gimg,pyr,LEVEL_PYR);
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| 119 | //lk
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| 120 | dspCalcOpticalFlowPyrLK(gimg_old,gimg,pyr_old,pyr,pointsA,pointsB,count,window,LEVEL_PYR,found_feature,feature_error,termination_criteria,0) ;
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| 121 |
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| 122 | data->Prev(1)->ReleaseMutex();
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| 123 | data->ReleaseMutex();
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| 124 | */
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| 125 | //apply rotation
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[144] | 126 | for(i=0;i<count;i++) {
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[122] | 127 | Vector3D tmp;
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| 128 | tmp.x=pointsA[i].x;
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| 129 | tmp.y=pointsA[i].y;
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| 130 | tmp.z=0;
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| 131 | rotation->ComputeRotation(tmp);
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| 132 | pointsA[i].x=tmp.x;
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| 133 | pointsA[i].y=tmp.y;
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| 134 |
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| 135 | tmp.x=pointsB[i].x;
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| 136 | tmp.y=pointsB[i].y;
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| 137 | tmp.z=0;
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| 138 | rotation->ComputeRotation(tmp);
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| 139 | pointsB[i].x=tmp.x;
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| 140 | pointsB[i].y=tmp.y;
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| 141 | }
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| 142 |
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| 143 | output->GetMutex();
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| 144 | CvPoint2D32f* pointsBf= output->PointsB();
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| 145 | for(i=0;i<count;i++)
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| 146 | {
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| 147 | pointsBf[i].x=pointsA[i].x+((float)pointsB[i].x)/256;
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| 148 | pointsBf[i].y=pointsA[i].y+((float)pointsB[i].y)/256;
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| 149 | }
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| 150 | output->ReleaseMutex();
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| 151 |
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| 152 | output->SetPointsA(pointsA);
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| 153 | output->SetFoundFeature(found_feature);
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| 154 | output->SetFeatureError(feature_error);
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| 155 | output->SetNbFeatures(count);
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| 156 |
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| 157 | //rotation
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| 158 | swap(pyr,pyr_old);
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| 159 |
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| 160 | output->SetDataTime(data->DataTime());
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| 161 | ProcessUpdate(output);
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| 162 | }
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| 163 |
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| 164 | } // end namespace filter
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| 165 | } // end namespace flair
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