Visual Servoing Platform  version 3.3.1 under development (2020-08-10)
vpImageMorphology.cpp
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30  *
31  * Description:
32  * Image morphology.
33  *
34  * Authors:
35  * Souriya Trinh
36  *
37  *****************************************************************************/
38 
39 #include <visp3/core/vpImageMorphology.h>
40 
41 #include <Simd/SimdLib.hpp>
42 
67 {
68  if (I.getSize() == 0) {
69  std::cerr << "Input image is empty!" << std::endl;
70  return;
71  }
72 
73  const unsigned char null_value = 255;
74 
75  vpImage<unsigned char> J(I.getHeight() + 2, I.getWidth() + 2);
76  // Copy I to J and add border
77  for (unsigned int i = 0; i < J.getHeight(); i++) {
78  if (i == 0 || i == J.getHeight() - 1) {
79  for (unsigned int j = 0; j < J.getWidth(); j++) {
80  J[i][j] = null_value;
81  }
82  } else {
83  J[i][0] = null_value;
84  memcpy(J[i] + 1, I[i - 1], sizeof(unsigned char) * I.getWidth());
85  J[i][J.getWidth() - 1] = null_value;
86  }
87  }
88 
89  SimdImageErosion(I.bitmap, J.bitmap, I.getWidth(), I.getHeight(),
90  connexity == CONNEXITY_4 ? SimdImageConnexity4 : SimdImageConnexity8);
91 }
92 
117 {
118  if (I.getSize() == 0) {
119  std::cerr << "Input image is empty!" << std::endl;
120  return;
121  }
122 
123  const unsigned char null_value = 0;
124 
125  vpImage<unsigned char> J(I.getHeight() + 2, I.getWidth() + 2);
126  // Copy I to J and add border
127  for (unsigned int i = 0; i < J.getHeight(); i++) {
128  if (i == 0 || i == J.getHeight() - 1) {
129  for (unsigned int j = 0; j < J.getWidth(); j++) {
130  J[i][j] = null_value;
131  }
132  } else {
133  J[i][0] = null_value;
134  memcpy(J[i] + 1, I[i - 1], sizeof(unsigned char) * I.getWidth());
135  J[i][J.getWidth() - 1] = null_value;
136  }
137  }
138 
139  SimdImageDilatation(I.bitmap, J.bitmap, I.getWidth(), I.getHeight(),
140  connexity == CONNEXITY_4 ? SimdImageConnexity4 : SimdImageConnexity8);
141 }
static void dilatation(vpImage< Type > &I, Type value, Type value_out, vpConnexityType connexity=CONNEXITY_4)
Type * bitmap
points toward the bitmap
Definition: vpImage.h:143
static void erosion(vpImage< Type > &I, Type value, Type value_out, vpConnexityType connexity=CONNEXITY_4)
unsigned int getHeight() const
Definition: vpImage.h:188
unsigned int getSize() const
Definition: vpImage.h:227
unsigned int getWidth() const
Definition: vpImage.h:246