NumCpp  2.12.1
A Templatized Header Only C++ Implementation of the Python NumPy Library
nearest2d.hpp
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1
28#pragma once
29
31#include "NumCpp/Core/Shape.hpp"
32#include "NumCpp/Core/Slice.hpp"
33#include "NumCpp/Core/Types.hpp"
35#include "NumCpp/NdArray.hpp"
36
38{
39 //============================================================================
40 // Method Description:
47 template<typename dtype>
48 NdArray<dtype> nearest2d(const NdArray<dtype>& inImage, uint32 inBoundarySize)
49 {
51
52 const Shape inShape = inImage.shape();
53 Shape outShape(inShape);
54 outShape.rows += inBoundarySize * 2;
55 outShape.cols += inBoundarySize * 2;
56
57 NdArray<dtype> outArray(outShape);
58 outArray.put(Slice(inBoundarySize, inBoundarySize + inShape.rows),
59 Slice(inBoundarySize, inBoundarySize + inShape.cols),
60 inImage);
61 fillCorners(outArray, inBoundarySize);
62
63 for (uint32 row = 0; row < inBoundarySize; ++row)
64 {
65 // bottom
66 outArray.put(row, Slice(inBoundarySize, inBoundarySize + inShape.cols), inImage(0, Slice(0, inShape.cols)));
67
68 // top
69 outArray.put(row + inBoundarySize + inShape.rows,
70 Slice(inBoundarySize, inBoundarySize + inShape.cols),
71 inImage(inShape.rows - 1, Slice(0, inShape.cols)));
72 }
73
74 for (uint32 col = 0; col < inBoundarySize; ++col)
75 {
76 // left
77 outArray.put(Slice(inBoundarySize, inBoundarySize + inShape.rows), col, inImage(Slice(0, inShape.rows), 0));
78
79 // right
80 outArray.put(Slice(inBoundarySize, inBoundarySize + inShape.rows),
81 col + inBoundarySize + inShape.cols,
82 inImage(Slice(0, inShape.rows), inShape.cols - 1));
83 }
84
85 return outArray;
86 }
87} // namespace nc::filter::boundary
#define STATIC_ASSERT_ARITHMETIC(dtype)
Definition: StaticAsserts.hpp:39
Holds 1D and 2D arrays, the main work horse of the NumCpp library.
Definition: NdArrayCore.hpp:139
const Shape & shape() const noexcept
Definition: NdArrayCore.hpp:4511
self_type & put(index_type inIndex, const value_type &inValue)
Definition: NdArrayCore.hpp:3693
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
Definition: addBoundary1d.hpp:44
NdArray< dtype > nearest2d(const NdArray< dtype > &inImage, uint32 inBoundarySize)
Definition: nearest2d.hpp:48
void fillCorners(NdArray< dtype > &inArray, uint32 inBorderWidth)
Definition: fillCorners.hpp:46
std::uint32_t uint32
Definition: Types.hpp:40