Compute Library
 20.02.1
CLGaussianPyramid.cpp
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1 /*
2  * Copyright (c) 2017-2019 ARM Limited.
3  *
4  * SPDX-License-Identifier: MIT
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25 
29 #include "arm_compute/core/Error.h"
35 
41 
42 #include <cstddef>
43 
44 using namespace arm_compute;
45 
47  : _input(nullptr), _pyramid(nullptr), _tmp()
48 {
49 }
50 
52  : _horizontal_border_handler(),
53  _vertical_border_handler(),
54  _horizontal_reduction(),
55  _vertical_reduction()
56 {
57 }
58 
59 void CLGaussianPyramidHalf::configure(ICLTensor *input, CLPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value)
60 {
62  ARM_COMPUTE_ERROR_ON(pyramid == nullptr);
63  ARM_COMPUTE_ERROR_ON(input->info()->num_dimensions() != pyramid->get_pyramid_level(0)->info()->num_dimensions());
64  ARM_COMPUTE_ERROR_ON(input->info()->dimension(0) != pyramid->info()->width());
65  ARM_COMPUTE_ERROR_ON(input->info()->dimension(1) != pyramid->info()->height());
67 
68  // Constant value to use for vertical fill border when the border mode is CONSTANT
69  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;
70 
71  /* Get number of pyramid levels */
72  const size_t num_levels = pyramid->info()->num_levels();
73 
74  _input = input;
75  _pyramid = pyramid;
76 
77  if(num_levels > 1)
78  {
79  _horizontal_border_handler.resize(num_levels - 1);
80  _vertical_border_handler.resize(num_levels - 1);
81  _horizontal_reduction.resize(num_levels - 1);
82  _vertical_reduction.resize(num_levels - 1);
83 
84  // Apply half scale to the X dimension of the tensor shape
85  TensorShape tensor_shape = pyramid->info()->tensor_shape();
86  tensor_shape.set(0, (pyramid->info()->width() + 1) * SCALE_PYRAMID_HALF);
87 
88  PyramidInfo pyramid_info(num_levels - 1, SCALE_PYRAMID_HALF, tensor_shape, Format::U16);
89  _tmp.init(pyramid_info);
90 
91  for(size_t i = 0; i < num_levels - 1; ++i)
92  {
93  /* Configure horizontal kernel */
94  _horizontal_reduction[i].configure(_pyramid->get_pyramid_level(i), _tmp.get_pyramid_level(i));
95 
96  /* Configure vertical kernel */
97  _vertical_reduction[i].configure(_tmp.get_pyramid_level(i), _pyramid->get_pyramid_level(i + 1));
98 
99  /* Configure border */
100  _horizontal_border_handler[i].configure(_pyramid->get_pyramid_level(i), _horizontal_reduction[i].border_size(), border_mode, PixelValue(constant_border_value));
101 
102  /* Configure border */
103  _vertical_border_handler[i].configure(_tmp.get_pyramid_level(i), _vertical_reduction[i].border_size(), border_mode, PixelValue(pixel_value_u16));
104  }
105  _tmp.allocate();
106  }
107 }
108 
110 {
111  ARM_COMPUTE_ERROR_ON_MSG(_pyramid == nullptr, "Unconfigured function");
112 
113  /* Get number of pyramid levels */
114  const size_t num_levels = _pyramid->info()->num_levels();
115 
116  /* The first level of the pyramid has the input image */
117  _pyramid->get_pyramid_level(0)->map(CLScheduler::get().queue(), true /* blocking */);
118  _input->map(CLScheduler::get().queue(), true /* blocking */);
119  _pyramid->get_pyramid_level(0)->copy_from(*_input);
120 
121  _input->unmap(CLScheduler::get().queue());
122  _pyramid->get_pyramid_level(0)->unmap(CLScheduler::get().queue());
123 
124  for(unsigned int i = 0; i < num_levels - 1; ++i)
125  {
126  CLScheduler::get().enqueue(_horizontal_border_handler[i], false);
127  CLScheduler::get().enqueue(_horizontal_reduction[i], false);
128  CLScheduler::get().enqueue(_vertical_border_handler[i], false);
129  CLScheduler::get().enqueue(_vertical_reduction[i], false);
130  }
131 }
132 
134  : _gauss5x5(),
135  _scale_nearest()
136 {
137 }
138 
139 void CLGaussianPyramidOrb::configure(ICLTensor *input, CLPyramid *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 
151  _input = input;
152  _pyramid = pyramid;
153 
154  if(num_levels > 1)
155  {
156  _gauss5x5.resize(num_levels - 1);
157  _scale_nearest.resize(num_levels - 1);
158 
159  PyramidInfo pyramid_info(num_levels - 1, SCALE_PYRAMID_ORB, pyramid->info()->tensor_shape(), Format::U8);
160 
161  _tmp.init(pyramid_info);
162 
163  for(size_t i = 0; i < num_levels - 1; ++i)
164  {
165  /* Configure gaussian 5x5 */
166  _gauss5x5[i].configure(_pyramid->get_pyramid_level(i), _tmp.get_pyramid_level(i), border_mode, constant_border_value);
167 
168  /* Configure scale image kernel */
169  _scale_nearest[i].configure(_tmp.get_pyramid_level(i), _pyramid->get_pyramid_level(i + 1), InterpolationPolicy::NEAREST_NEIGHBOR, border_mode, SamplingPolicy::CENTER);
170  }
171 
172  _tmp.allocate();
173  }
174 }
175 
177 {
178  ARM_COMPUTE_ERROR_ON_MSG(_pyramid == nullptr, "Unconfigured function");
179 
180  /* Get number of pyramid levels */
181  const size_t num_levels = _pyramid->info()->num_levels();
182 
183  /* The first level of the pyramid has the input image */
184  _pyramid->get_pyramid_level(0)->map(CLScheduler::get().queue(), true /* blocking */);
185  _input->map(CLScheduler::get().queue(), true /* blocking */);
186  _pyramid->get_pyramid_level(0)->copy_from(*_input);
187  _input->unmap(CLScheduler::get().queue());
188  _pyramid->get_pyramid_level(0)->unmap(CLScheduler::get().queue());
189 
190  for(unsigned int i = 0; i < num_levels - 1; ++i)
191  {
192  _gauss5x5[i].run();
193  CLScheduler::get().enqueue(_scale_nearest[i]);
194  }
195 }
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
constexpr float SCALE_PYRAMID_HALF
Constant value used to indicate a half-scale pyramid.
Definition: Types.h:109
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
void run() override
Run the kernels contained in the function.
TensorInfo * info() const override
Interface to be implemented by the child class to return the tensor's metadata.
Definition: CLTensor.cpp:41
static CLScheduler & get()
Access the scheduler singleton.
Definition: CLScheduler.cpp:99
1 channel, 1 U8 per channel
const PyramidInfo * info() const override
Interface to be implemented by the child class to return the Pyramid's metadata.
Definition: CLPyramid.cpp:118
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
1 channel, 1 U16 per channel
Output values are defined to match the source pixel whose center is nearest to the sample position.
Copyright (c) 2017-2020 ARM Limited.
Samples are taken at pixel center.
void configure(ICLTensor *input, CLPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value) override
Initialise the function's source, destinations and border mode.
size_t num_dimensions() const override
The number of dimensions of the tensor (rank)
Definition: TensorInfo.h:253
Basic implementation of the OpenCL pyramid interface.
Definition: CLPyramid.h:40
#define ARM_COMPUTE_ERROR_ON_MSG(cond, msg)
Definition: Error.h:456
float scale() const
Return the scale factor of the pyramid.
void enqueue(ICLKernel &kernel, bool flush=true)
Schedule the execution of the passed kernel if possible.
#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
void run() override
Run the kernels contained in the function.
Interface for OpenCL tensor.
Definition: ICLTensor.h:42
CLTensor * get_pyramid_level(size_t index) const override
Retrieves a level of the pyramid as a ITensor pointer.
Definition: CLPyramid.cpp:123
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
void configure(ICLTensor *input, CLPyramid *pyramid, BorderMode border_mode, uint8_t constant_border_value) override
Initialise the function's source, destinations and border mode.