| 18 | namespace mitk |
| 19 | { |
| 20 | void SimpleImageHistogram::ComputeFromBaseData(BaseData *src) |
| 21 | { |
| 22 | valid = false; |
| 23 | |
| 24 | // check if input is valid |
| 25 | if (src == nullptr) |
| 26 | return; |
| 27 | auto *source = dynamic_cast<Image *>(src); |
| 28 | if (source == nullptr) |
| 29 | return; |
| 30 | else if (source->IsEmpty()) |
| 31 | return; |
| 32 | |
| 33 | auto generator = mitk::HistogramGenerator::New(); |
| 34 | generator->SetImage(source); |
| 35 | generator->SetSize(nBins); |
| 36 | generator->ComputeHistogram(); |
| 37 | histogram = static_cast<mitk::SimpleImageHistogram::HistogramType::ConstPointer> (generator->GetHistogram()); |
| 38 | |
| 39 | CountType highest = 0; |
| 40 | for (unsigned int i = 0; i < histogram->GetSize()[0]; ++i) |
| 41 | { |
| 42 | CountType count = histogram->GetFrequency(i); |
| 43 | if (count > highest) |
| 44 | highest = count; |
| 45 | } |
| 46 | invLogHighest = 1.0 / log(double(highest)); |
| 47 | valid = true; |
| 48 | } |
| 49 | |
| 50 | bool SimpleImageHistogram::GetValid() { return valid; } |
| 51 | float SimpleImageHistogram::GetRelativeBin(double left, double right) const |