NumCpp  2.11.0
A Templatized Header Only C++ Implementation of the Python NumPy Library
constant2d.hpp
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1 #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 
37 namespace nc::filter::boundary
38 {
39  //============================================================================
40  // Method Description:
48  template<typename dtype>
49  NdArray<dtype> constant2d(const NdArray<dtype>& inImage, uint32 inBoundarySize, dtype inConstantValue)
50  {
52 
53  const Shape inShape = inImage.shape();
54  Shape outShape(inShape);
55  outShape.rows += inBoundarySize * 2;
56  outShape.cols += inBoundarySize * 2;
57 
58  NdArray<dtype> outArray(outShape);
59  outArray.put(Slice(inBoundarySize, inBoundarySize + inShape.rows),
60  Slice(inBoundarySize, inBoundarySize + inShape.cols),
61  inImage);
62  fillCorners(outArray, inBoundarySize, inConstantValue);
63 
64  outArray.put(Slice(0, inBoundarySize),
65  Slice(inBoundarySize, inBoundarySize + inShape.cols),
66  inConstantValue);
67  outArray.put(Slice(outShape.rows - inBoundarySize, outShape.rows),
68  Slice(inBoundarySize, inBoundarySize + inShape.cols),
69  inConstantValue);
70  outArray.put(Slice(inBoundarySize, inBoundarySize + inShape.rows),
71  Slice(0, inBoundarySize),
72  inConstantValue);
73  outArray.put(Slice(inBoundarySize, inBoundarySize + inShape.rows),
74  Slice(outShape.cols - inBoundarySize, outShape.cols),
75  inConstantValue);
76 
77  return outArray;
78  }
79 } // 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:138
self_type & put(index_type inIndex, const value_type &inValue)
Definition: NdArrayCore.hpp:3646
const Shape & shape() const noexcept
Definition: NdArrayCore.hpp:4464
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 > constant2d(const NdArray< dtype > &inImage, uint32 inBoundarySize, dtype inConstantValue)
Definition: constant2d.hpp:49
void fillCorners(NdArray< dtype > &inArray, uint32 inBorderWidth)
Definition: fillCorners.hpp:46
std::uint32_t uint32
Definition: Types.hpp:40