Compute Library
 20.02.1
NEGaussianPyramid.cpp
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25 
26 #include "arm_compute/core/Error.h"
39 
40 #include <cstddef>
41 
42 using namespace arm_compute;
43 
45  : _input(nullptr), _pyramid(nullptr), _tmp()
46 {
47 }
48 
50  : _horizontal_border_handler(),
51  _vertical_border_handler(),
52  _horizontal_reduction(),
53  _vertical_reduction()
54 {
55 }
56 
57 void NEGaussianPyramidHalf::configure(const ITensor *input, IPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value)
58 {
60  ARM_COMPUTE_ERROR_ON(nullptr == pyramid);
61  ARM_COMPUTE_ERROR_ON(input->info()->num_dimensions() != pyramid->get_pyramid_level(0)->info()->num_dimensions());
62  ARM_COMPUTE_ERROR_ON(input->info()->dimension(0) != pyramid->info()->width());
63  ARM_COMPUTE_ERROR_ON(input->info()->dimension(1) != pyramid->info()->height());
65 
66  // Constant value to use for vertical fill border when the border mode is CONSTANT
67  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;
68 
69  /* Get number of pyramid levels */
70  const size_t num_levels = pyramid->info()->num_levels();
71  const size_t num_stages = num_levels - 1;
72 
73  _input = input;
74  _pyramid = pyramid;
75 
76  if(num_levels > 1)
77  {
78  // Apply half scale to the X dimension of the tensor shape
79  TensorShape tensor_shape = pyramid->info()->tensor_shape();
80  tensor_shape.set(0, (pyramid->info()->width() + 1) * SCALE_PYRAMID_HALF);
81 
82  PyramidInfo pyramid_info(num_levels - 1, SCALE_PYRAMID_HALF, tensor_shape, Format::S16);
83  _tmp.init(pyramid_info);
84 
85  _horizontal_reduction.clear();
86  _vertical_reduction.clear();
87  _horizontal_border_handler.clear();
88  _vertical_border_handler.clear();
89 
90  _horizontal_reduction.resize(num_stages);
91  _vertical_reduction.resize(num_stages);
92  _horizontal_border_handler.resize(num_stages);
93  _vertical_border_handler.resize(num_stages);
94 
95  for(size_t i = 0; i < num_stages; ++i)
96  {
97  /* Configure horizontal kernel */
98  _horizontal_reduction[i].configure(_pyramid->get_pyramid_level(i), _tmp.get_pyramid_level(i));
99 
100  /* Configure vertical kernel */
101  _vertical_reduction[i].configure(_tmp.get_pyramid_level(i), _pyramid->get_pyramid_level(i + 1));
102 
103  /* Configure border */
104  _horizontal_border_handler[i].configure(_pyramid->get_pyramid_level(i), _horizontal_reduction[i].border_size(), border_mode, PixelValue(constant_border_value));
105 
106  /* Configure border */
107  _vertical_border_handler[i].configure(_tmp.get_pyramid_level(i), _vertical_reduction[i].border_size(), border_mode, PixelValue(pixel_value_u16));
108  }
109 
110  _tmp.allocate();
111  }
112 }
113 
115 {
116  ARM_COMPUTE_ERROR_ON_MSG(_pyramid == nullptr, "Unconfigured function");
117 
118  /* Get number of pyramid levels */
119  const unsigned int num_levels = _pyramid->info()->num_levels();
120 
121  /* The first level of the pyramid has the input image */
122  _pyramid->get_pyramid_level(0)->copy_from(*_input);
123 
124  for(unsigned int i = 0; i < num_levels - 1; ++i)
125  {
126  NEScheduler::get().schedule(&_horizontal_border_handler[i], Window::DimZ);
127  NEScheduler::get().schedule(&_horizontal_reduction[i], Window::DimY);
128  NEScheduler::get().schedule(&_vertical_border_handler[i], Window::DimZ);
129  NEScheduler::get().schedule(&_vertical_reduction[i], Window::DimY);
130  }
131 }
132 
134  : _gaus5x5(),
135  _scale_nearest()
136 {
137 }
138 
139 void NEGaussianPyramidOrb::configure(const ITensor *input, IPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value)
140 {
142  ARM_COMPUTE_ERROR_ON(nullptr == pyramid);
143  ARM_COMPUTE_ERROR_ON(input->info()->num_dimensions() != pyramid->get_pyramid_level(0)->info()->num_dimensions());
144  ARM_COMPUTE_ERROR_ON(input->info()->dimension(0) != pyramid->info()->width());
145  ARM_COMPUTE_ERROR_ON(input->info()->dimension(1) != pyramid->info()->height());
147 
148  /* Get number of pyramid levels */
149  const size_t num_levels = pyramid->info()->num_levels();
150  const size_t num_stages = num_levels - 1;
151 
152  _input = input;
153  _pyramid = pyramid;
154 
155  _gaus5x5.clear();
156  _scale_nearest.clear();
157 
158  _gaus5x5.resize(num_stages);
159  _scale_nearest.resize(num_stages);
160 
161  if(num_levels > 1)
162  {
163  PyramidInfo pyramid_info(num_levels - 1, SCALE_PYRAMID_ORB, pyramid->info()->tensor_shape(), Format::U8);
164  _tmp.init(pyramid_info);
165 
166  for(size_t i = 0; i < num_levels - 1; ++i)
167  {
168  /* Configure gaussian 5x5 */
169  _gaus5x5[i].configure(_pyramid->get_pyramid_level(i), _tmp.get_pyramid_level(i), border_mode, constant_border_value);
170 
171  /* Configure scale */
172  _scale_nearest[i].configure(_tmp.get_pyramid_level(i), _pyramid->get_pyramid_level(i + 1), InterpolationPolicy::NEAREST_NEIGHBOR, BorderMode::UNDEFINED);
173  }
174 
175  _tmp.allocate();
176  }
177 }
178 
180 {
181  ARM_COMPUTE_ERROR_ON_MSG(_pyramid == nullptr, "Unconfigured function");
182 
183  /* Get number of pyramid levels */
184  const size_t num_levels = _pyramid->info()->num_levels();
185 
186  /* The first level of the pyramid has the input image */
187  _pyramid->get_pyramid_level(0)->copy_from(*_input);
188 
189  for(unsigned int i = 0; i < num_levels - 1; ++i)
190  {
191  _gaus5x5[i].run();
192  _scale_nearest[i].run();
193  }
194 }
BorderMode
Methods available to handle borders.
Definition: Types.h:261
constexpr float SCALE_PYRAMID_ORB
Constant value used to indicate a ORB scaled pyramid.
Definition: Types.h:112
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:109
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