NumCpp  2.12.1
A Templatized Header Only C++ Implementation of the Python NumPy Library
maximumFilter1d.hpp
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1
28#pragma once
29
30#include "NumCpp/Core/Slice.hpp"
31#include "NumCpp/Core/Types.hpp"
34#include "NumCpp/NdArray.hpp"
35
36namespace 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:139
self_type max(Axis inAxis=Axis::NONE) const
Definition: NdArrayCore.hpp:3041
size_type size() const noexcept
Definition: NdArrayCore.hpp:4524
value_type item() const
Definition: NdArrayCore.hpp:3022
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