template<class ArrayT, class ArithT>
| void Impala::Core::Array::PixStat | ( | ArrayT * | im, | |
| ArithT * | minVal, | |||
| ArithT * | maxVal, | |||
| ArithT * | mean, | |||
| ArithT * | variance | |||
| ) | [inline] |
Definition at line 18 of file PixStat.h.
References Impala::Core::Array::Element::E1Cast(), Impala::Core::Array::Trait::ExportStat< ArithT, DataT >::mMaxVal, Impala::Core::Array::Trait::ExportStat< ArithT, DataT >::mMinVal, Impala::Core::Array::Trait::ExportStat< ArithT, DataT >::mNum, Impala::Core::Array::Trait::ExportStat< ArithT, DataT >::mSum, Impala::Core::Array::Trait::ExportStat< ArithT, DataT >::mSumSqr, and Impala::Core::Array::Pattern::PatInOutOp().
Referenced by Impala::Core::Training::Fisher::CNormC(), GetRgbPixels(), and Impala::Core::Feature::VisSem::ImageStat().
00020 { 00021 Trait::ExportStat<ArithT, ArithT> pixOp; 00022 Pattern::PatInOutOp(im, pixOp); 00023 if (minVal) 00024 *minVal = pixOp.mMinVal; 00025 if (maxVal) 00026 *maxVal = pixOp.mMaxVal; 00027 ArithT num = Element::E1Cast(pixOp.mNum, ArithT()); 00028 ArithT num1 = num - Element::E1Cast(1, ArithT()); 00029 if (mean) 00030 *mean = pixOp.mSum / num; 00031 if (variance) 00032 *variance = (pixOp.mNum == 1) ? Element::E1Cast(0, ArithT()) 00033 : (pixOp.mSumSqr - ((pixOp.mSum * pixOp.mSum) / num)) / (num1); 00034 }
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