NumCpp  2.12.1
A Templatized Header Only C++ Implementation of the Python NumPy Library
meanFilter.hpp
Go to the documentation of this file.
1
28#pragma once
29
30#include "NumCpp/Core/Shape.hpp"
31#include "NumCpp/Core/Slice.hpp"
32#include "NumCpp/Core/Types.hpp"
35#include "NumCpp/NdArray.hpp"
36
37namespace nc::filter
38{
39 //============================================================================
40 // Method Description:
49 template<typename dtype>
51 uint32 inSize,
52 Boundary inBoundaryType = Boundary::REFLECT,
53 dtype inConstantValue = 0)
54 {
55 NdArray<dtype> arrayWithBoundary =
56 boundary::addBoundary2d(inImageArray, inBoundaryType, inSize, inConstantValue);
57 NdArray<double> output(inImageArray.shape());
58
59 const Shape inShape = inImageArray.shape();
60 const uint32 boundarySize = inSize / 2; // integer division
61 const uint32 endPointRow = boundarySize + inShape.rows;
62 const uint32 endPointCol = boundarySize + inShape.cols;
63
64 for (uint32 row = boundarySize; row < endPointRow; ++row)
65 {
66 for (uint32 col = boundarySize; col < endPointCol; ++col)
67 {
68 NdArray<dtype> window = arrayWithBoundary(Slice(row - boundarySize, row + boundarySize + 1),
69 Slice(col - boundarySize, col + boundarySize + 1));
70
71 output(row - boundarySize, col - boundarySize) = mean(window).item();
72 }
73 }
74
75 return output;
76 }
77} // namespace nc::filter
const Shape & shape() const noexcept
Definition: NdArrayCore.hpp:4511
value_type item() const
Definition: NdArrayCore.hpp:3022
A Shape Class for NdArrays.
Definition: Core/Shape.hpp:41
uint32 rows
Definition: Core/Shape.hpp:44
uint32 cols
Definition: Core/Shape.hpp:45
A Class for slicing into NdArrays.
Definition: Slice.hpp:45
NdArray< dtype > addBoundary2d(const NdArray< dtype > &inImage, Boundary inBoundaryType, uint32 inKernalSize, dtype inConstantValue=0)
Definition: addBoundary2d.hpp:56
Definition: addBoundary1d.hpp:44
NdArray< double > meanFilter(const NdArray< dtype > &inImageArray, uint32 inSize, Boundary inBoundaryType=Boundary::REFLECT, dtype inConstantValue=0)
Definition: meanFilter.hpp:50
Boundary
Boundary condition to apply to the image filter.
Definition: Boundary.hpp:36
NdArray< double > mean(const NdArray< dtype > &inArray, Axis inAxis=Axis::NONE)
Definition: mean.hpp:52
std::uint32_t uint32
Definition: Types.hpp:40