Impala Documentation

RoiInfo Impala::Application::SDash::RegionsOfInterestInfo::GetRoiInfo ( int absRoiNr ) const [inline]

Definition at line 186 of file RegionsOfInterestInfo.h.

References Impala::Application::SDash::RoiInfo::frameNr, mNrOfVideos, mRois, Impala::Application::SDash::RoiInfo::roiNr, ROIS_PER_VIDEO, and Impala::Application::SDash::RoiInfo::videoId.

Referenced by Impala::Application::SDash::IdentificationPane::SearchSimilars().

00187     {
00188         RoiInfo roiInfo; // data structure to return
00189 
00190         int runningRoiNr = absRoiNr;
00191 
00192         // determine roi nr relative to video:
00193         for (int v = 0; v < mNrOfVideos; v++)
00194         {
00195             if (runningRoiNr < ROIS_PER_VIDEO[v])
00196             {
00197                 roiInfo.videoId = v;
00198                 break;
00199             }
00200             runningRoiNr -= ROIS_PER_VIDEO[v];
00201         }
00202 
00203         // determine roi nr relative to frame:
00204         const std::map<int, std::vector<Rectangle> >& roisForVideo = mRois[roiInfo.videoId];
00205         // note that the map is ordered by frame nr
00206         std::map<int, std::vector<Rectangle> >::const_iterator frameIter = roisForVideo.begin();
00207         while (frameIter != roisForVideo.end())
00208         {
00209             int frameRois = frameIter->second.size();
00210             if (runningRoiNr < frameRois)
00211                 break;
00212             runningRoiNr -= frameRois;
00213             frameIter++;
00214         }
00215 
00216         if (frameIter != roisForVideo.end() && runningRoiNr >= 0 && runningRoiNr < frameIter->second.size())
00217         {
00218             roiInfo.frameNr = frameIter->first;
00219             roiInfo.roiNr = runningRoiNr;
00220         }
00221         else
00222         {
00223             roiInfo.videoId = -1;
00224             roiInfo.frameNr = -1;
00225             roiInfo.roiNr = -1;
00226         }
00227 
00228         return roiInfo;
00229     }