NumCpp  2.11.0
A Templatized Header Only C++ Implementation of the Python NumPy Library
maximumFilter1d.hpp
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1 #pragma once
29 
30 #include "NumCpp/Core/Slice.hpp"
31 #include "NumCpp/Core/Types.hpp"
34 #include "NumCpp/NdArray.hpp"
35 
36 namespace nc::filter
37 {
38  //============================================================================
39  // Method Description:
51  template<typename dtype>
53  uint32 inSize,
54  Boundary inBoundaryType = Boundary::REFLECT,
55  dtype inConstantValue = 0)
56  {
57  NdArray<dtype> arrayWithBoundary =
58  boundary::addBoundary1d(inImageArray, inBoundaryType, inSize, inConstantValue);
59  NdArray<dtype> output(1, inImageArray.size());
60 
61  const uint32 boundarySize = inSize / 2; // integer division
62  const uint32 endPoint = boundarySize + inImageArray.size();
63 
64  for (uint32 i = boundarySize; i < endPoint; ++i)
65  {
66  NdArray<dtype> window = arrayWithBoundary[Slice(i - boundarySize, i + boundarySize + 1)];
67 
68  output[i - boundarySize] = window.max().item();
69  }
70 
71  return output;
72  }
73 } // namespace nc::filter
Holds 1D and 2D arrays, the main work horse of the NumCpp library.
Definition: NdArrayCore.hpp:138
self_type max(Axis inAxis=Axis::NONE) const
Definition: NdArrayCore.hpp:2994
size_type size() const noexcept
Definition: NdArrayCore.hpp:4477
value_type item() const
Definition: NdArrayCore.hpp:2975
A Class for slicing into NdArrays.
Definition: Slice.hpp:45
NdArray< dtype > addBoundary1d(const NdArray< dtype > &inImage, Boundary inBoundaryType, uint32 inKernalSize, dtype inConstantValue=0)
Definition: addBoundary1d.hpp:56
Definition: addBoundary1d.hpp:44
NdArray< dtype > maximumFilter1d(const NdArray< dtype > &inImageArray, uint32 inSize, Boundary inBoundaryType=Boundary::REFLECT, dtype inConstantValue=0)
Definition: maximumFilter1d.hpp:52
Boundary
Boundary condition to apply to the image filter.
Definition: Boundary.hpp:36
std::uint32_t uint32
Definition: Types.hpp:40