Impala Documentation

void Impala::Core::Trec::Collection::ReadKeyframesClips	(	Segmentation *	segm,
		Keyframes *	keyframes,
		String	clipsKeys,
		int	offset
	)			`[inline, private]`

Keyframe definition in Clips-Imag format.

File excerpt:

BG_12460/74.jpg 1_1_1 TRECVID2007_1/shot1_1_RKF.jpg 0 128 0 128 0.00 5.16 352 288 BG_12460/406.jpg 1_2_1 TRECVID2007_1/shot1_2_RKF.jpg 129 623 129 623 5.16 24.96 352 288

...

BG_12460/2680.jpg 1_9_1 TRECVID2007_1/shot1_9_NRKF_1.jpg 2675 2685 2675 2988 107.00 107.44 352 288 BG_12460/2883.jpg 1_9_2 TRECVID2007_1/shot1_9_RKF.jpg 2686 2988 2675 2988 107.44 119.56 352 288

Definition at line 216 of file Collection.h.

References Impala::Core::Table::TableTem< Col1T, Col2T, Col3T, Col4T, Col5T, Col6T, Col7T, Col8T, Col9T >::Add(), Impala::atol(), Impala::FileNameBase(), Impala::FileNameTail(), Impala::Core::VideoSet::Segmentation::GetEnd(), Impala::Core::VideoSet::Segmentation::GetNrShots(), Impala::Core::VideoSet::Segmentation::GetStart(), Impala::Core::VideoSet::Segmentation::GetVideoId(), ILOG_DEBUG, ILOG_ERROR, and Impala::Persistency::File::ReadStrings().

Referenced by WriteVideoSet().

00218     {
00219         std::vector<String> lines;
00220         Persistency::FileLocator loc(clipsKeys);
00221         typedef Persistency::RepositoryInFileSystem FS;
00222         Persistency::File file = FS::GetInstance().GetFile(loc, false, false);
00223         file.ReadStrings(std::back_inserter(lines), true);
00224         ILOG_DEBUG("clipsKeys nr lines = " << lines.size());
00225         int curShot = -1;
00226         int lastShot = -1;
00227         for (int i=0 ; i<lines.size() ; i++)
00228         {
00229             Util::StringParser p(lines[i]);
00230             int frameNr = atol(FileNameBase(p.GetString(' ')));
00231             int vidId = atol(p.GetString('_'));
00232             if (vidId - 1 < offset)
00233             {
00234                 ILOG_DEBUG("skipping " << vidId - 1);
00235                 continue;
00236             }
00237             int shotId = atol(p.GetString('_'));
00238             int shotSub = atol(p.GetString(' '));
00239             String imName = FileNameTail(p.GetString(' '));
00240             ILOG_DEBUG("frameNr = " << frameNr << ", vid = " << vidId <<
00241                        ", shot = " << shotId << ", imName = " << imName);
00242             if (shotId != lastShot)
00243             {
00244                 curShot++;
00245                 lastShot = shotId;
00246                 if (curShot > segm->GetNrShots())
00247                 {
00248                     ILOG_ERROR("Too many keyframes");
00249                     return;
00250                 }
00251             }
00252             if ((vidId - 1 - offset) != segm->GetVideoId(curShot))
00253                 ILOG_ERROR("ReadKeyframesClips: wrong vidId on line" << i);
00254             if ((frameNr < segm->GetStart(curShot)) ||
00255                 (frameNr > segm->GetEnd(curShot)))
00256             {
00257                 ILOG_ERROR("ReadKeyframesClips: frame " << frameNr <<
00258                            " outside shot [" << segm->GetStart(curShot)
00259                            << "," << segm->GetEnd(curShot) << "], line nr = "
00260                            << i << ", curshot = " << curShot);
00261             }
00262             keyframes->Add(vidId - 1 - offset, curShot, frameNr, imName);
00263         }
00264     }

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