ARM Compute Library
17.04
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Interface for the im2col reshape kernel. More...
#include <CLIm2ColKernel.h>
Public Member Functions | |
CLIm2ColKernel () | |
Default constructor. More... | |
CLIm2ColKernel (const CLIm2ColKernel &)=delete | |
Prevent instances of this class from being copied (As this class contains pointers) More... | |
CLIm2ColKernel & | operator= (const CLIm2ColKernel &)=delete |
Prevent instances of this class from being copied (As this class contains pointers) More... | |
CLIm2ColKernel (CLIm2ColKernel &&)=default | |
Allow instances of this class to be moved. More... | |
CLIm2ColKernel & | operator= (CLIm2ColKernel &&)=default |
Allow instances of this class to be moved. More... | |
void | configure (const ICLTensor *input, ICLTensor *output, std::pair< unsigned int, unsigned int > convolved_dims, const PadStrideInfo &conv_info, bool has_bias) |
Set the input and output of the kernel. More... | |
void | run (const Window &window, cl::CommandQueue &queue) override |
Enqueue the OpenCL kernel to process the given window on the passed OpenCL command queue. More... | |
Public Member Functions inherited from ICLKernel | |
ICLKernel () | |
Constructor. More... | |
cl::Kernel & | kernel () |
Returns a reference to the OpenCL kernel of this object. More... | |
void | add_1D_tensor_argument (unsigned int &idx, const ICLTensor *tensor, const Window &window) |
Add the passed 1D tensor's parameters to the object's kernel's arguments starting from the index idx. More... | |
void | add_2D_tensor_argument (unsigned int &idx, const ICLTensor *tensor, const Window &window) |
Add the passed 2D tensor's parameters to the object's kernel's arguments starting from the index idx. More... | |
void | add_3D_tensor_argument (unsigned int &idx, const ICLTensor *tensor, const Window &window) |
Add the passed 3D tensor's parameters to the object's kernel's arguments starting from the index idx. More... | |
unsigned int | num_arguments_per_1D_tensor () const |
Returns the number of arguments enqueued per 1D tensor object. More... | |
unsigned int | num_arguments_per_2D_tensor () const |
Returns the number of arguments enqueued per 2D tensor object. More... | |
unsigned int | num_arguments_per_3D_tensor () const |
Returns the number of arguments enqueued per 3D tensor object. More... | |
template<typename T > | |
void | add_argument (unsigned int &idx, T value) |
Add the passed parameters to the object's kernel's arguments starting from the index idx. More... | |
Public Member Functions inherited from IKernel | |
IKernel () | |
Constructor. More... | |
virtual | ~IKernel ()=default |
Destructor. More... | |
virtual bool | is_parallelisable () const |
Indicates whether or not the kernel is parallelisable. More... | |
virtual BorderSize | border_size () const |
The size of the border for that kernel. More... | |
const Window & | window () const |
The maximum window the kernel can be executed on. More... | |
Interface for the im2col reshape kernel.
Rearranges image blocks into columns. It is used to strip out each convolution block to a single column. It is used to transform a convolution to a plain matrix multiplication.
For example taking into account the image below and assuming 3x3 image blocks with stride of 1 we have:
\[ \left( \begin{array}{cccc} a00 & a01 & a02 & a03 \\ a10 & a11 & a12 & a13 \\ a20 & a21 & a22 & a23 \\ a30 & a31 & a32 & a33 \\ \end{array} \right) = \left( \begin{array}{ccccccccc} a00 & a01 & a02 & a10 & a11 & a12 & a20 & a21 & a22 \\ a01 & a02 & a03 & a11 & a12 & a13 & a21 & a22 & a23 \\ a10 & a11 & a12 & a20 & a21 & a22 & a30 & a31 & a32 \\ a11 & a12 & a13 & a21 & a22 & a23 & a31 & a32 & a33 \\ \end{array} \right) \]
Definition at line 55 of file CLIm2ColKernel.h.
CLIm2ColKernel | ( | ) |
Default constructor.
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delete |
Prevent instances of this class from being copied (As this class contains pointers)
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default |
Allow instances of this class to be moved.
void configure | ( | const ICLTensor * | input, |
ICLTensor * | output, | ||
std::pair< unsigned int, unsigned int > | convolved_dims, | ||
const PadStrideInfo & | conv_info, | ||
bool | has_bias | ||
) |
Set the input and output of the kernel.
[in] | input | The input tensor to convert. 3 lower dimensions represent a single input [width, height, IFM], while every optional dimension from 4 and above represent a batch of inputs. Data types supported: F16, F32 |
[out] | output | The output tensor. First 2 lower dimensions represent a transform of each 3D input, while every dimension above represents a batch. Data types supported: Same as input |
[in] | convolved_dims | The convolved output dimensions. |
[in] | conv_info | Contains padding and stride information described in PadStrideInfo. |
[in] | has_bias | In case biases are provided expands the matrix with 1. |
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delete |
Prevent instances of this class from being copied (As this class contains pointers)
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default |
Allow instances of this class to be moved.
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overridevirtual |
Enqueue the OpenCL kernel to process the given window on the passed OpenCL command queue.
[in] | window | Region on which to execute the kernel. (Must be a valid region of the window returned by window()). |
[in,out] | queue | Command queue on which to enqueue the kernel. |
Implements ICLKernel.