Compute Library
 20.05
NEGaussianPyramid.cpp
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25 
26 #include "arm_compute/core/Error.h"
38 
39 #include <cstddef>
40 
41 using namespace arm_compute;
42 
44  : _input(nullptr), _pyramid(nullptr), _tmp()
45 {
46 }
47 
49  : _horizontal_border_handler(),
50  _vertical_border_handler(),
51  _horizontal_reduction(),
52  _vertical_reduction()
53 {
54 }
55 
56 void NEGaussianPyramidHalf::configure(const ITensor *input, IPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value)
57 {
59  ARM_COMPUTE_ERROR_ON(nullptr == pyramid);
60  ARM_COMPUTE_ERROR_ON(input->info()->num_dimensions() != pyramid->get_pyramid_level(0)->info()->num_dimensions());
61  ARM_COMPUTE_ERROR_ON(input->info()->dimension(0) != pyramid->info()->width());
62  ARM_COMPUTE_ERROR_ON(input->info()->dimension(1) != pyramid->info()->height());
64 
65  // Constant value to use for vertical fill border when the border mode is CONSTANT
66  const uint16_t pixel_value_u16 = static_cast<uint16_t>(constant_border_value) * 2 + static_cast<uint16_t>(constant_border_value) * 8 + static_cast<uint16_t>(constant_border_value) * 6;
67 
68  /* Get number of pyramid levels */
69  const size_t num_levels = pyramid->info()->num_levels();
70  const size_t num_stages = num_levels - 1;
71 
72  _input = input;
73  _pyramid = pyramid;
74 
75  if(num_levels > 1)
76  {
77  // Apply half scale to the X dimension of the tensor shape
78  TensorShape tensor_shape = pyramid->info()->tensor_shape();
79  tensor_shape.set(0, (pyramid->info()->width() + 1) * SCALE_PYRAMID_HALF);
80 
81  PyramidInfo pyramid_info(num_levels - 1, SCALE_PYRAMID_HALF, tensor_shape, Format::S16);
82  _tmp.init(pyramid_info);
83 
84  _horizontal_reduction.clear();
85  _vertical_reduction.clear();
86  _horizontal_border_handler.clear();
87  _vertical_border_handler.clear();
88 
89  _horizontal_reduction.resize(num_stages);
90  _vertical_reduction.resize(num_stages);
91  _horizontal_border_handler.resize(num_stages);
92  _vertical_border_handler.resize(num_stages);
93 
94  for(size_t i = 0; i < num_stages; ++i)
95  {
96  /* Configure horizontal kernel */
97  _horizontal_reduction[i].configure(_pyramid->get_pyramid_level(i), _tmp.get_pyramid_level(i));
98 
99  /* Configure vertical kernel */
100  _vertical_reduction[i].configure(_tmp.get_pyramid_level(i), _pyramid->get_pyramid_level(i + 1));
101 
102  /* Configure border */
103  _horizontal_border_handler[i].configure(_pyramid->get_pyramid_level(i), _horizontal_reduction[i].border_size(), border_mode, PixelValue(constant_border_value));
104 
105  /* Configure border */
106  _vertical_border_handler[i].configure(_tmp.get_pyramid_level(i), _vertical_reduction[i].border_size(), border_mode, PixelValue(pixel_value_u16));
107  }
108 
109  _tmp.allocate();
110  }
111 }
112 
114 {
115  ARM_COMPUTE_ERROR_ON_MSG(_pyramid == nullptr, "Unconfigured function");
116 
117  /* Get number of pyramid levels */
118  const unsigned int num_levels = _pyramid->info()->num_levels();
119 
120  /* The first level of the pyramid has the input image */
121  _pyramid->get_pyramid_level(0)->copy_from(*_input);
122 
123  for(unsigned int i = 0; i < num_levels - 1; ++i)
124  {
125  NEScheduler::get().schedule(&_horizontal_border_handler[i], Window::DimZ);
126  NEScheduler::get().schedule(&_horizontal_reduction[i], Window::DimY);
127  NEScheduler::get().schedule(&_vertical_border_handler[i], Window::DimZ);
128  NEScheduler::get().schedule(&_vertical_reduction[i], Window::DimY);
129  }
130 }
131 
133  : _gaus5x5(),
134  _scale_nearest()
135 {
136 }
137 
138 void NEGaussianPyramidOrb::configure(const ITensor *input, IPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value)
139 {
141  ARM_COMPUTE_ERROR_ON(nullptr == pyramid);
142  ARM_COMPUTE_ERROR_ON(input->info()->num_dimensions() != pyramid->get_pyramid_level(0)->info()->num_dimensions());
143  ARM_COMPUTE_ERROR_ON(input->info()->dimension(0) != pyramid->info()->width());
144  ARM_COMPUTE_ERROR_ON(input->info()->dimension(1) != pyramid->info()->height());
146 
147  /* Get number of pyramid levels */
148  const size_t num_levels = pyramid->info()->num_levels();
149  const size_t num_stages = num_levels - 1;
150 
151  _input = input;
152  _pyramid = pyramid;
153 
154  _gaus5x5.clear();
155  _scale_nearest.clear();
156 
157  _gaus5x5.resize(num_stages);
158  _scale_nearest.resize(num_stages);
159 
160  if(num_levels > 1)
161  {
162  PyramidInfo pyramid_info(num_levels - 1, SCALE_PYRAMID_ORB, pyramid->info()->tensor_shape(), Format::U8);
163  _tmp.init(pyramid_info);
164 
165  for(size_t i = 0; i < num_levels - 1; ++i)
166  {
167  /* Configure gaussian 5x5 */
168  _gaus5x5[i].configure(_pyramid->get_pyramid_level(i), _tmp.get_pyramid_level(i), border_mode, constant_border_value);
169 
170  /* Configure scale */
171  _scale_nearest[i].configure(_tmp.get_pyramid_level(i), _pyramid->get_pyramid_level(i + 1), InterpolationPolicy::NEAREST_NEIGHBOR, BorderMode::UNDEFINED);
172  }
173 
174  _tmp.allocate();
175  }
176 }
177 
179 {
180  ARM_COMPUTE_ERROR_ON_MSG(_pyramid == nullptr, "Unconfigured function");
181 
182  /* Get number of pyramid levels */
183  const size_t num_levels = _pyramid->info()->num_levels();
184 
185  /* The first level of the pyramid has the input image */
186  _pyramid->get_pyramid_level(0)->copy_from(*_input);
187 
188  for(unsigned int i = 0; i < num_levels - 1; ++i)
189  {
190  _gaus5x5[i].run();
191  _scale_nearest[i].run();
192  }
193 }
BorderMode
Methods available to handle borders.
Definition: Types.h:264
constexpr float SCALE_PYRAMID_ORB
Constant value used to indicate a ORB scaled pyramid.
Definition: Types.h:115
void run() override
Run the kernels contained in the function.
constexpr float SCALE_PYRAMID_HALF
Constant value used to indicate a half-scale pyramid.
Definition: Types.h:112
virtual size_t num_dimensions() const =0
The number of dimensions of the tensor (rank)
const TensorShape & tensor_shape() const
Return the TensorShape of the o-th level tensor.
Definition: PyramidInfo.cpp:92
Class describing the value of a pixel for any image format.
Definition: PixelValue.h:34
Shape of a tensor.
Definition: TensorShape.h:39
virtual const PyramidInfo * info() const =0
Interface to be implemented by the child class to return the Pyramid's metadata.
void configure(const ITensor *input, IPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value) override
Initialise the function's source, destinations and border mode.
1 channel, 1 U8 per channel
void init(size_t num_levels, float scale, size_t width, size_t height, Format format)
Initialize pyramid's metadata for 2D tensors.
Definition: PyramidInfo.cpp:50
#define ARM_COMPUTE_ERROR_ON(cond)
If the condition is true then an error message is printed and an exception thrown.
Definition: Error.h:466
Output values are defined to match the source pixel whose center is nearest to the sample position.
Interface for NEON tensor.
Definition: ITensor.h:36
Copyright (c) 2017-2020 ARM Limited.
Interface for pyramid data-object.
Definition: IPyramid.h:36
virtual ITensor * get_pyramid_level(size_t index) const =0
Retrieves a level of the pyramid as a ITensor pointer.
void run() override
Run the kernels contained in the function.
#define ARM_COMPUTE_ERROR_ON_MSG(cond, msg)
Definition: Error.h:456
virtual ITensorInfo * info() const =0
Interface to be implemented by the child class to return the tensor's metadata.
float scale() const
Return the scale factor of the pyramid.
void configure(const ITensor *input, IPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value) override
Initialise the function's source, destinations and border mode.
1 channel, 1 S16 per channel
NEGaussianPyramid()
Default constructor.
#define ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(t, c,...)
Definition: Validate.h:790
Store the Pyramid's metadata.
Definition: PyramidInfo.h:35
static constexpr size_t DimY
Alias for dimension 1 also known as Y dimension.
Definition: Window.h:45
virtual void schedule(ICPPKernel *kernel, const Hints &hints)=0
Runs the kernel in the same thread as the caller synchronously.
static constexpr size_t DimZ
Alias for dimension 2 also known as Z dimension.
Definition: Window.h:47
Borders are left undefined.
TensorShape & set(size_t dimension, size_t value, bool apply_dim_correction=true)
Accessor to set the value of one of the dimensions.
Definition: TensorShape.h:78
size_t width() const
Return the width of the 0th level tensor.
Definition: PyramidInfo.cpp:82
size_t num_levels() const
Return the number of the pyramid levels.
Definition: PyramidInfo.cpp:77
size_t height() const
Return the height of the 0th level tensor.
Definition: PyramidInfo.cpp:87
static IScheduler & get()
Access the scheduler singleton.
Definition: Scheduler.cpp:95