blobs.cpp

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#include "blobs.h"

Blobs::Blobs(Ui::mainFrameClass pui) {
        ui=pui;
}

Blobs::~Blobs() {}

IplImage* Blobs::applyBlobslib(IplImage* src){
        IplImage *dst_image=cvCreateImage( cvGetSize(src), 8, 3 );
        //Search blobs                          
        blobResult = CBlobResult(src, NULL, 0);
        //blobResult.PrintBlobs( ".\\filteredBlobs0.txt" );
        
        //Filter per minimum and maximum area
        int iMinArea=(ui.leBlobsMinArea->text()).toInt();
        int iMaxArea=(ui.leBlobsMaxArea->text()).toInt();
        blobResult.Filter( blobResult, B_INCLUDE, CBlobGetArea(), B_GREATER, iMinArea );
        blobResult.Filter( blobResult, B_INCLUDE, CBlobGetArea(), B_LESS, iMaxArea );
        //blobResult.PrintBlobs( ".\\filteredBlobs1.txt" );
        
        //Filter by roughness
        float fMinRough=(ui.leBlobsMinRough->text()).toFloat();
        float fMaxRough=(ui.leBlobsMaxRough->text()).toFloat();
        blobResult.Filter(blobResult, B_INCLUDE, CBlobGetRoughness(), B_GREATER, fMinRough );
        blobResult.Filter(blobResult, B_INCLUDE, CBlobGetRoughness(), B_LESS, fMaxRough );
        //blobResult.PrintBlobs( ".\\filteredBlobs2.txt" );
        
        if (ui.comboLog->currentIndex()>0)
                ui.txInform->append(QString("Applying cblobslib: Min Area %1, Max Area %2, Min Rough %3, Max Rough %4")
                        .arg(iMinArea).arg(iMaxArea).arg(fMinRough).arg(fMaxRough));
        
        //Resulting blobs number
        int blobsNum=blobResult.GetNumBlobs();
        CBlob blob;
        //Color image
        cvCvtColor( src, dst_image, CV_GRAY2BGR );
        cvReleaseImage(&src);
        //For Each blob
        for( int j = 0; j < blobsNum; j++ ) {
                blob=blobResult.GetBlob(j);
                /*CBlobGetRoughness getRough=CBlobGetRoughness();
                double rough=getRough(blob);
                if (ui.comboLog->currentIndex()>0)
                        ui.txInform->append(QString("Roughness: %1").arg(rough));*/
                printBorders(blob,dst_image);
                //Paint number (same order that is established with PrintBlobs into a file)
                CvFont font;
                cvInitFont(&font, CV_FONT_HERSHEY_SIMPLEX, 0.4, 0.4, 0, 1, CV_AA);
                QString qID=QString("%1").arg(j);
                QByteArray ba = qID.toLatin1();
                const char *cqID = ba.data(); 
                //Put text into image
                cvPutText(dst_image,cqID,cvPoint((blob.MinX() + ((blob.MaxX() - blob.MinX())/3)),(blob.MinY() + ((blob.MaxY() - blob.MinY())/3)))
                        ,&font,CV_RGB(0, 255, 0));
        }
        return dst_image;
}

void Blobs::printBorders(CBlob blob, IplImage* dst_image){
        //Blue color
        CvScalar rectangleColor=CV_RGB(0, 0, 255);  
        //Variables
        int iMaxx, iMinx, iMaxy, iMiny;
        iMaxx=(int)blob.MaxX(); iMinx=(int)blob.MinX(); iMaxy=(int)blob.MaxY(); iMiny=(int)blob.MinY();
        //Paint rectangle
        cvRectangle( dst_image, cvPoint(iMinx , iMiny ), cvPoint ( iMaxx, iMaxy ),rectangleColor, 1, 8, 0);             
}

CBlobResult Blobs::getBlobs(){
        return blobResult;
}

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