Compute Library
 21.02
CLHOGDescriptor.cpp
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25 
26 #include "arm_compute/core/Error.h"
34 
35 using namespace arm_compute;
36 
37 CLHOGDescriptor::CLHOGDescriptor(std::shared_ptr<IMemoryManager> memory_manager)
38  : _memory_group(std::move(memory_manager)),
39  _gradient(),
40  _orient_bin(std::make_unique<CLHOGOrientationBinningKernel>()),
41  _block_norm(std::make_unique<CLHOGBlockNormalizationKernel>()),
42  _mag(),
43  _phase(),
44  _hog_space()
45 {
46 }
47 
49 
50 void CLHOGDescriptor::configure(ICLTensor *input, ICLTensor *output, const IHOG *hog, BorderMode border_mode, uint8_t constant_border_value)
51 {
52  configure(CLKernelLibrary::get().get_compile_context(), input, output, hog, border_mode, constant_border_value);
53 }
54 
55 void CLHOGDescriptor::configure(const CLCompileContext &compile_context, ICLTensor *input, ICLTensor *output, const IHOG *hog, BorderMode border_mode, uint8_t constant_border_value)
56 {
58  ARM_COMPUTE_ERROR_ON(nullptr == output);
59  ARM_COMPUTE_ERROR_ON(nullptr == hog);
60 
61  const HOGInfo *hog_info = hog->info();
62  const size_t width = input->info()->dimension(Window::DimX);
63  const size_t height = input->info()->dimension(Window::DimY);
64  const size_t num_bins = hog_info->num_bins();
65 
66  Size2D cell_size = hog_info->cell_size();
67 
68  // Calculate number of cells along the x and y directions for the hog_space
69  const size_t num_cells_x = width / cell_size.width;
70  const size_t num_cells_y = height / cell_size.height;
71 
72  // TensorShape of the input image
73  const TensorShape &shape_img = input->info()->tensor_shape();
74 
75  // TensorShape of the hog space
76  TensorShape shape_hog_space = input->info()->tensor_shape();
77  shape_hog_space.set(Window::DimX, num_cells_x);
78  shape_hog_space.set(Window::DimY, num_cells_y);
79 
80  // Intitialize tensors for magnitude, phase and hog space
81  TensorInfo info_mag(shape_img, Format::S16);
82  _mag.allocator()->init(info_mag);
83 
84  TensorInfo info_phase(shape_img, Format::U8);
85  _phase.allocator()->init(info_phase);
86 
87  TensorInfo info_space(shape_hog_space, num_bins, DataType::F32);
88  _hog_space.allocator()->init(info_space);
89 
90  // Manage intermediate buffers
91  _memory_group.manage(&_mag);
92  _memory_group.manage(&_phase);
93 
94  // Initialise gradient kernel
95  _gradient.configure(compile_context, input, &_mag, &_phase, hog_info->phase_type(), border_mode, constant_border_value);
96 
97  // Manage intermediate buffers
98  _memory_group.manage(&_hog_space);
99 
100  // Initialise orientation binning kernel
101  _orient_bin->configure(compile_context, &_mag, &_phase, &_hog_space, hog->info());
102 
103  // Initialize HOG norm kernel
104  _block_norm->configure(compile_context, &_hog_space, output, hog->info());
105 
106  // Allocate intermediate tensors
107  _mag.allocator()->allocate();
108  _phase.allocator()->allocate();
109  _hog_space.allocator()->allocate();
110 }
111 
113 {
114  MemoryGroupResourceScope scope_mg(_memory_group);
115 
116  // Run gradient
117  _gradient.run();
118 
119  // Run orientation binning
120  CLScheduler::get().enqueue(*_orient_bin, false);
121 
122  // Run block normalization
123  CLScheduler::get().enqueue(*_block_norm);
124 }
BorderMode
Methods available to handle borders.
Definition: Types.h:265
size_t num_bins() const
The number of histogram bins for each cell.
Definition: HOGInfo.cpp:111
Shape of a tensor.
Definition: TensorShape.h:39
Interface for HOG data-object.
Definition: IHOG.h:35
OpenCL kernel to perform HOG Orientation Binning.
virtual size_t dimension(size_t index) const =0
Return the size of the requested dimension.
const Size2D & cell_size() const
The cell size in pixels.
Definition: HOGInfo.cpp:91
static CLScheduler & get()
Access the scheduler singleton.
void run() override
Run the kernels contained in the function.
void configure(ICLTensor *input, ICLTensor *output_magnitude, ICLTensor *output_phase, PhaseType phase_type, BorderMode border_mode, uint8_t constant_border_value=0)
Initialise the function&#39;s source, destinations, phase type and border mode.
1 channel, 1 U8 per channel
Store the HOG&#39;s metadata.
Definition: HOGInfo.h:35
1 channel, 1 F32 per channel
#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
static CLKernelLibrary & get()
Access the KernelLibrary singleton.
CLTensorAllocator * allocator()
Return a pointer to the tensor&#39;s allocator.
Definition: CLTensor.cpp:61
CLHOGDescriptor(std::shared_ptr< IMemoryManager > memory_manager=nullptr)
Default constructor.
PhaseType phase_type() const
The type of PhaseType.
Definition: HOGInfo.cpp:126
void init(const TensorInfo &input, size_t alignment=0)
Initialize a tensor based on the passed TensorInfo.
Copyright (c) 2017-2021 Arm Limited.
size_t height
Height of the image region or rectangle.
Definition: Size2D.h:90
void manage(IMemoryManageable *obj) override
Sets a object to be managed by the given memory group.
Definition: MemoryGroup.h:79
Interface to enqueue OpenCL kernels and get/set the OpenCL CommandQueue and ICLTuner.
OpenCL kernel to perform HOG block normalization.
static constexpr size_t DimX
Alias for dimension 0 also known as X dimension.
Definition: Window.h:43
virtual const TensorShape & tensor_shape() const =0
Size for each dimension of the tensor.
virtual ITensorInfo * info() const =0
Interface to be implemented by the child class to return the tensor&#39;s metadata.
1 channel, 1 S16 per channel
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
CLCompileContext class.
void allocate() override
Allocate size specified by TensorInfo of OpenCL memory.
static constexpr size_t DimY
Alias for dimension 1 also known as Y dimension.
Definition: Window.h:45
Memory group resources scope handling class.
Definition: IMemoryGroup.h:82
Interface for OpenCL tensor.
Definition: ICLTensor.h:42
~CLHOGDescriptor()
Default destructor.
size_t width
Width of the image region or rectangle.
Definition: Size2D.h:89
Class for specifying the size of an image or rectangle.
Definition: Size2D.h:34
Store the tensor&#39;s metadata.
Definition: TensorInfo.h:45
virtual const HOGInfo * info() const =0
Interface to be implemented by the child class to return the HOG&#39;s metadata.
void configure(ICLTensor *input, ICLTensor *output, const IHOG *hog, BorderMode border_mode, uint8_t constant_border_value=0)
Initialise the function&#39;s source, destination, HOG data-object and border mode.
TensorShape & set(size_t dimension, size_t value, bool apply_dim_correction=true, bool increase_dim_unit=true)
Accessor to set the value of one of the dimensions.
Definition: TensorShape.h:79
void run() override
Run the kernels contained in the function.