Impala Documentation

void Impala::Core::Feature::InterestPointFeature::ProjectHardIndex	(	Mat *	matrixDescriptors,
		PointDescriptorTable *	pointData
	)			`[inline, private]`

Definition at line 678 of file InterestPointFeature.h.

References Impala::Core::Table::TableTem< Col1T, Col2T, Col3T, Col4T, Col5T, Col6T, Col7T, Col8T, Col9T >::GetColumn2(), ILOG_DEBUG, ILOG_INFO, Impala::Core::Matrix::MatE(), Impala::Core::Matrix::MatMul(), Impala::Core::Matrix::MatNrRow(), mCodebook, mDescriptorReduce, mLastCodebookVectors, Impala::Core::Feature::PointDescriptorTable::ReplaceAllDescriptors(), Impala::Core::Table::Table::Size(), Impala::Timer::SplitTimeStr(), and Impala::Core::Matrix::VectorQuantize().

Referenced by ProjectOntoCodebook().

00680     {
00681         using namespace Matrix;
00682         Timer timerProjection;
00683         if(mDescriptorReduce)
00684         {
00685             matrixDescriptors = MatMul(matrixDescriptors, mDescriptorReduce);
00686         }
00687         Mat* matrixCodebook = mCodebook->GetColumn2()->GetStorage();
00688         ILOG_DEBUG("Codebook projection (init) took: " <<
00689                    timerProjection.SplitTimeStr());
00690         // result will be a (#descriptors, 2) matrix
00691         Mat* assignment =
00692             Core::Matrix::VectorQuantize(matrixDescriptors, matrixCodebook);
00693         ILOG_INFO("Codebook projection (matrix) took: " <<
00694                   timerProjection.SplitTimeStr());
00695 
00696         Array::Array2dScalarReal64* newDesc = new Array::Array2dScalarReal64(1, 
00697                                                    pointData->Size(), 0, 0);
00698         for(int vj = 0; vj < MatNrRow(matrixDescriptors); vj++)
00699         {
00700             Real64 bestDistance = *MatE(assignment, vj, 1);
00701             int    bestIndex = static_cast<int>(*MatE(assignment, vj, 0));
00702             *MatE(newDesc, vj, 0) = bestIndex;
00703         }
00704         // this call also takes ownership
00705         pointData->ReplaceAllDescriptors(newDesc);
00706         delete assignment;
00707         for(int i = 0; i < mLastCodebookVectors.size(); i++)
00708             delete mLastCodebookVectors[i];
00709         mLastCodebookVectors.clear();
00710         if(mDescriptorReduce)
00711         {
00712             delete matrixDescriptors;
00713         }
00714     }

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