NumCpp  2.5.1
A Templatized Header Only C++ Implementation of the Python NumPy Library
percentileFilter1d.hpp
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1 #pragma once
29 
30 #include "NumCpp/Core/Slice.hpp"
31 #include "NumCpp/Core/Types.hpp"
35 #include "NumCpp/NdArray.hpp"
36 
37 namespace nc
38 {
39  namespace filter
40  {
41  //============================================================================
42  // Method Description:
55  template<typename dtype>
56  NdArray<dtype> percentileFilter1d(const NdArray<dtype>& inImageArray, uint32 inSize, double inPercentile,
57  Boundary inBoundaryType = Boundary::REFLECT, dtype inConstantValue = 0)
58  {
59  NdArray<dtype> arrayWithBoundary = boundary::addBoundary1d(inImageArray, inBoundaryType, inSize, inConstantValue);
60  NdArray<dtype> output(1, inImageArray.size());
61 
62  const uint32 boundarySize = inSize / 2; // integer division
63  const uint32 endPoint = boundarySize + inImageArray.size();
64 
65  for (uint32 i = boundarySize; i < endPoint; ++i)
66  {
67  NdArray<dtype> window = arrayWithBoundary[Slice(i - boundarySize, i + boundarySize + 1)];
68 
69  output[i - boundarySize] = percentile(window, inPercentile).item();
70  }
71 
72  return output;
73  }
74  } // namespace filter
75 } // namespace nc
Holds 1D and 2D arrays, the main work horse of the NumCpp library.
Definition: NdArrayCore.hpp:72
size_type size() const noexcept
Definition: NdArrayCore.hpp:4497
value_type item() const
Definition: NdArrayCore.hpp:3102
A Class for slicing into NdArrays.
Definition: Slice.hpp:44
NdArray< dtype > addBoundary1d(const NdArray< dtype > &inImage, Boundary inBoundaryType, uint32 inKernalSize, dtype inConstantValue=0)
Definition: addBoundary1d.hpp:61
Boundary
Boundary condition to apply to the image filter.
Definition: Boundary.hpp:37
NdArray< dtype > percentileFilter1d(const NdArray< dtype > &inImageArray, uint32 inSize, double inPercentile, Boundary inBoundaryType=Boundary::REFLECT, dtype inConstantValue=0)
Definition: percentileFilter1d.hpp:56
Definition: Coordinate.hpp:45
NdArray< double > percentile(const NdArray< dtype > &inArray, double inPercentile, Axis inAxis=Axis::NONE, const std::string &inInterpMethod="linear")
Definition: percentile.hpp:66
std::uint32_t uint32
Definition: Types.hpp:40