Compute Library
 20.05
CLHOGDescriptor.cpp
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25 
26 #include "arm_compute/core/Error.h"
31 
32 using namespace arm_compute;
33 
34 CLHOGDescriptor::CLHOGDescriptor(std::shared_ptr<IMemoryManager> memory_manager)
35  : _memory_group(std::move(memory_manager)), _gradient(), _orient_bin(), _block_norm(), _mag(), _phase(), _hog_space()
36 {
37 }
38 
39 void CLHOGDescriptor::configure(ICLTensor *input, ICLTensor *output, const IHOG *hog, BorderMode border_mode, uint8_t constant_border_value)
40 {
41  configure(CLKernelLibrary::get().get_compile_context(), input, output, hog, border_mode, constant_border_value);
42 }
43 
44 void CLHOGDescriptor::configure(const CLCompileContext &compile_context, ICLTensor *input, ICLTensor *output, const IHOG *hog, BorderMode border_mode, uint8_t constant_border_value)
45 {
47  ARM_COMPUTE_ERROR_ON(nullptr == output);
48  ARM_COMPUTE_ERROR_ON(nullptr == hog);
49 
50  const HOGInfo *hog_info = hog->info();
51  const size_t width = input->info()->dimension(Window::DimX);
52  const size_t height = input->info()->dimension(Window::DimY);
53  const size_t num_bins = hog_info->num_bins();
54 
55  Size2D cell_size = hog_info->cell_size();
56 
57  // Calculate number of cells along the x and y directions for the hog_space
58  const size_t num_cells_x = width / cell_size.width;
59  const size_t num_cells_y = height / cell_size.height;
60 
61  // TensorShape of the input image
62  const TensorShape &shape_img = input->info()->tensor_shape();
63 
64  // TensorShape of the hog space
65  TensorShape shape_hog_space = input->info()->tensor_shape();
66  shape_hog_space.set(Window::DimX, num_cells_x);
67  shape_hog_space.set(Window::DimY, num_cells_y);
68 
69  // Intitialize tensors for magnitude, phase and hog space
70  TensorInfo info_mag(shape_img, Format::S16);
71  _mag.allocator()->init(info_mag);
72 
73  TensorInfo info_phase(shape_img, Format::U8);
74  _phase.allocator()->init(info_phase);
75 
76  TensorInfo info_space(shape_hog_space, num_bins, DataType::F32);
77  _hog_space.allocator()->init(info_space);
78 
79  // Manage intermediate buffers
80  _memory_group.manage(&_mag);
81  _memory_group.manage(&_phase);
82 
83  // Initialise gradient kernel
84  _gradient.configure(compile_context, input, &_mag, &_phase, hog_info->phase_type(), border_mode, constant_border_value);
85 
86  // Manage intermediate buffers
87  _memory_group.manage(&_hog_space);
88 
89  // Initialise orientation binning kernel
90  _orient_bin.configure(compile_context, &_mag, &_phase, &_hog_space, hog->info());
91 
92  // Initialize HOG norm kernel
93  _block_norm.configure(compile_context, &_hog_space, output, hog->info());
94 
95  // Allocate intermediate tensors
96  _mag.allocator()->allocate();
97  _phase.allocator()->allocate();
98  _hog_space.allocator()->allocate();
99 }
100 
102 {
103  MemoryGroupResourceScope scope_mg(_memory_group);
104 
105  // Run gradient
106  _gradient.run();
107 
108  // Run orientation binning
109  CLScheduler::get().enqueue(_orient_bin, false);
110 
111  // Run block normalization
112  CLScheduler::get().enqueue(_block_norm);
113 }
BorderMode
Methods available to handle borders.
Definition: Types.h:264
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
const Size2D & cell_size() const
The cell size in pixels.
Definition: HOGInfo.cpp:91
static CLScheduler & get()
Access the scheduler singleton.
Definition: CLScheduler.cpp:99
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's source, destinations, phase type and border mode.
1 channel, 1 U8 per channel
Store the HOG'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'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) 2017-2020 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
static constexpr size_t DimX
Alias for dimension 0 also known as X dimension.
Definition: Window.h:43
void configure(const ICLTensor *input_magnitude, const ICLTensor *input_phase, ICLTensor *output, const HOGInfo *hog_info)
Initialise the kernel's inputs, output and HOG's metadata.
1 channel, 1 S16 per channel
void enqueue(ICLKernel &kernel, bool flush=true)
Schedule the execution of the passed kernel if possible.
CLCompileContext class.
#define ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(t, c,...)
Definition: Validate.h:790
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
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
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
void configure(const ICLTensor *input, ICLTensor *output, const HOGInfo *hog_info)
Initialise the kernel's input, output and HOG's metadata.
Store the tensor's metadata.
Definition: TensorInfo.h:45
virtual const HOGInfo * info() const =0
Interface to be implemented by the child class to return the HOG's metadata.
void configure(ICLTensor *input, ICLTensor *output, const IHOG *hog, BorderMode border_mode, uint8_t constant_border_value=0)
Initialise the function's source, destination, HOG data-object and border mode.
void run() override
Run the kernels contained in the function.