blobtrackgenyml.cpp

Program use openCV to demo edge detection (algorithm Gradient).

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#include "_cvaux.h"

typedef struct DefBlobTrack
{
    CvBlob      blob;
    CvBlobSeq*  pSeq;
    int         FrameBegin;
    int         FrameLast;
    int         Saved; /* flag */
}DefBlobTrack;

class CvBlobTrackGenYML:public CvBlobTrackGen
{
protected:
    int         m_Frame;
    char*       m_pFileName;
    CvBlobSeq   m_TrackList;
    CvSize      m_Size;
    
    void SaveAll()
    {
        int     ObjNum = m_TrackList.GetBlobNum();
        int     i;
        char    video_name[1024];
        char*   struct_name = NULL;
        CvFileStorage* storage = cvOpenFileStorage(m_pFileName,NULL,CV_STORAGE_WRITE_TEXT);
        if(storage==NULL)
        {
            printf("WARNING!!! Can not open %s file for trajectories writing",m_pFileName);
        }

        for(i=0;i<1024 && m_pFileName[i]!='.' && m_pFileName[i]!=0;++i)video_name[i]=m_pFileName[i];
        video_name[i] = 0;
        for(;i>0;i--)
        {
            if(video_name[i-1] == '\\') break;
            if(video_name[i-1] == '/') break;
            if(video_name[i-1] == ':') break;
        }
        struct_name = video_name + i;

        cvStartWriteStruct(storage, struct_name, CV_NODE_SEQ);
        for(i=0;i<ObjNum;++i)
        {
            char            obj_name[1024];
            DefBlobTrack*   pTrack = (DefBlobTrack*)m_TrackList.GetBlob(i);
            if(pTrack==NULL) continue;
            sprintf(obj_name,"%s_obj%d",struct_name,i);
            cvStartWriteStruct(storage, NULL, CV_NODE_MAP);
            cvWriteInt(storage, "FrameBegin", pTrack->FrameBegin);
            cvWriteString(storage, "VideoObj", obj_name);
            cvEndWriteStruct( storage );
            pTrack->Saved = 1;
        }
        cvEndWriteStruct( storage );

        for(i=0;i<ObjNum;++i)
        {
            char            obj_name[1024];
            DefBlobTrack*   pTrack = (DefBlobTrack*)m_TrackList.GetBlob(i);
            CvBlobSeq*      pSeq = pTrack->pSeq;
            sprintf(obj_name,"%s_obj%d",struct_name,i);
            cvStartWriteStruct(storage, obj_name, CV_NODE_MAP);
            
            { /* write pos */
                int             j;
                CvPoint2D32f    p;
                cvStartWriteStruct(storage, "Pos", CV_NODE_SEQ|CV_NODE_FLOW);
                for(j=0;j<pSeq->GetBlobNum();++j)
                {
                    CvBlob* pB = pSeq->GetBlob(j);
                    p.x = pB->x/(m_Size.width-1);
                    p.y = pB->y/(m_Size.height-1);
                    cvWriteRawData(storage, &p, 1 ,"ff");
                }
                cvEndWriteStruct( storage );
            }
            
            { /* write size */
                int             j;
                CvPoint2D32f    p;
                cvStartWriteStruct(storage, "Size", CV_NODE_SEQ|CV_NODE_FLOW);
                for(j=0;j<pSeq->GetBlobNum();++j)
                {
                    CvBlob* pB = pSeq->GetBlob(j);
                    p.x = pB->w/(m_Size.width-1);
                    p.y = pB->h/(m_Size.height-1);
                    cvWriteRawData(storage, &p, 1 ,"ff");
                }
                cvEndWriteStruct( storage );
            }
            cvEndWriteStruct( storage );
        }
        cvReleaseFileStorage(&storage);
    }/* Save All */
public:
    CvBlobTrackGenYML():m_TrackList(sizeof(DefBlobTrack))
    {
        m_Frame = 0;
        m_pFileName = NULL;
        m_Size = cvSize(2,2);
    };
    ~CvBlobTrackGenYML()
    {
        int i;
        SaveAll();
        for(i=m_TrackList.GetBlobNum();i>0;--i)
        {
            DefBlobTrack* pTrack = (DefBlobTrack*)m_TrackList.GetBlob(i-1);
            /* delete sequence */
            delete pTrack->pSeq;
            pTrack->pSeq = NULL;
        }/* check next track */
    }/* destructor */

    void    SetFileName(char* pFileName){m_pFileName = pFileName;};
    void    AddBlob(CvBlob* pBlob)
    {
        DefBlobTrack* pTrack = (DefBlobTrack*)m_TrackList.GetBlobByID(CV_BLOB_ID(pBlob));
        if(pTrack==NULL)
        {/* add new track */
            DefBlobTrack    Track;
            Track.blob = pBlob[0];
            Track.FrameBegin = m_Frame;
            Track.pSeq = new CvBlobSeq;
            Track.Saved = 0;
            m_TrackList.AddBlob((CvBlob*)&Track);
            pTrack = (DefBlobTrack*)m_TrackList.GetBlobByID(CV_BLOB_ID(pBlob));
        }/* add new track */

        assert(pTrack);
        pTrack->FrameLast = m_Frame;
        assert(pTrack->pSeq);
        pTrack->pSeq->AddBlob(pBlob);
    };
    void    Process(IplImage* pImg = NULL, IplImage* /*pFG*/ = NULL)
    {
        int i;
        m_Size = cvSize(pImg->width,pImg->height);
        for(i=m_TrackList.GetBlobNum();i>0;--i)
        {
            DefBlobTrack* pTrack = (DefBlobTrack*)m_TrackList.GetBlob(i-1);
            if(pTrack->FrameLast < m_Frame && !pTrack->Saved)
            {/* save track */
                SaveAll();
            }/* save track */
        }/* check next track */
        m_Frame++;
    }
    void Release()
    {
        delete this;
    }
}; /* class CvBlobTrackGenYML */


CvBlobTrackGen* cvCreateModuleBlobTrackGenYML()
{
    return (CvBlobTrackGen*) new CvBlobTrackGenYML;
}