+++ /dev/null
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-
-/*
-This file contain implementation of virtual interface of CvBlobDetector
-this implementation based on simple algorithm
-new blob is detected when several successive frames contains connected componets
-which have uniform motion with not high speed.
-Also separation from border and already tracked blobs are considered.
-*/
-
-#include "_cvaux.h"
-
-/* blob detector based on real data (groundtruth data)*/
-class CvBlobDetectorReal:public CvBlobDetector
-{
-protected:
- CvTestSeq* m_pTestSeq;
- CvBlobSeq m_DetectedBlobs;
- CvMemStorage* m_pMem;
-
-public:
- CvBlobDetectorReal(CvTestSeq* pTestSeq)
- {
- m_pTestSeq = pTestSeq;
- m_pMem = cvCreateMemStorage(0);
- }
-
- /* Destructor of BlobDetector: */
- ~CvBlobDetectorReal()
- {
- if(m_pMem) cvReleaseMemStorage(&m_pMem);
- } /* cvReleaseBlobDetector */
-
- /* cvDetectNewBlobs:
- * Return 1 and fill blob pNewBlob with
- * blob parameters if new blob is detected:
- */
- int DetectNewBlob(IplImage* /*pImg*/, IplImage* /*pFGMask*/, CvBlobSeq* pNewBlobList, CvBlobSeq* /*pOldBlobList*/)
- {
- int i;
- int TestObjNum;
- IplImage* pMask = NULL;
- IplImage* pMaskCopy = NULL;
- CvSeq* cnts = NULL;
-
- if(m_pTestSeq==NULL) return 0;
- TestObjNum = cvTestSeqGetObjectNum(m_pTestSeq);
- pMask = cvTestSeqGetFGMask(m_pTestSeq);
- if(pMask == NULL) return 0;
- pMaskCopy = cvCloneImage(pMask);
- assert(pMaskCopy);
-
- cvClearMemStorage(m_pMem);
- cvFindContours( pMaskCopy, m_pMem, &cnts, sizeof(CvContour), CV_RETR_EXTERNAL);
- cvReleaseImage(&pMaskCopy);
-
- for(i=0; i<TestObjNum; ++i)
- { /* Check each object: */
- CvPoint2D32f RealPos;
- CvPoint2D32f RealSize;
- int RealPosFlag = cvTestSeqGetObjectPos(m_pTestSeq,i,&RealPos);
- int RealSizeFlag = cvTestSeqGetObjectSize(m_pTestSeq,i,&RealSize);
-
- if(!RealPosFlag) continue;
- if(m_DetectedBlobs.GetBlobByID(i)) continue;
-
- if(RealSizeFlag)
- { /* Real size is known: */
- float W2 = RealSize.x * 0.5f;
- float H2 = RealSize.y * 0.5f;
- if( RealPos.x > W2 && RealPos.x < (pMask->width-W2) &&
- RealPos.y > H2 && RealPos.y < (pMask->height-H2) )
- { /* Yes!! We found new blob, let's add it to list: */
- CvBlob NewBlob;
- NewBlob.x = RealPos.x;
- NewBlob.y = RealPos.y;
- NewBlob.w = RealSize.x;
- NewBlob.h = RealSize.y;
- NewBlob.ID = i;
- m_DetectedBlobs.AddBlob(&NewBlob);
- pNewBlobList->AddBlob(&NewBlob);
- }
- } /* Real size is known. */
- else
- {
- CvSeq* cnt;
- if(m_DetectedBlobs.GetBlobByID(i)) continue;
-
- for(cnt=cnts; cnt; cnt=cnt->h_next)
- {
- //CvBlob* pNewBlob = NULL;
- CvBlob NewBlob;
- CvRect r = cvBoundingRect( cnt );
- float x = RealPos.x - r.x;
- float y = RealPos.y - r.y;
-
- if(x<0 || x > r.width || y < 0 || y > r.height ) continue;
-
- if( r.x <= 1 ||
- r.y <= 1 ||
- r.x + r.width >= pMask->width - 2 ||
- r.y + r.height >= pMask->height - 2 ) continue;
-
- /* Yes!! We found new blob, let's add it to list: */
- NewBlob.x = RealPos.x;
- NewBlob.y = RealPos.y;
- NewBlob.w = (float)r.width;
- NewBlob.h = (float)r.height;
- NewBlob.ID = i;
- m_DetectedBlobs.AddBlob(&NewBlob);
- pNewBlobList->AddBlob(&NewBlob);
- }
- } /* Check new blob entrance. */
- } /* Check next object. */
-
- return pNewBlobList->GetBlobNum();
-
- } /* cvDetectNewBlob */
-
- void Release(){delete this;};
-};
-
-/* Blob detector constructor: */
-CvBlobDetector* cvCreateBlobDetectorReal(CvTestSeq* pTestSeq){return new CvBlobDetectorReal(pTestSeq);}
-
-
-
-
-
projects / opencv / blobdiff