tesseract  5.0.0
tesseract::Maxpool Class Reference

#include <maxpool.h>

Inheritance diagram for tesseract::Maxpool:
tesseract::Reconfig tesseract::Network

Public Member Functions

TESS_API Maxpool (const char *name, int ni, int x_scale, int y_scale)
 
 ~Maxpool () override=default
 
std::string spec () const override
 
bool DeSerialize (TFile *fp) override
 
void Forward (bool debug, const NetworkIO &input, const TransposedArray *input_transpose, NetworkScratch *scratch, NetworkIO *output) override
 
bool Backward (bool debug, const NetworkIO &fwd_deltas, NetworkScratch *scratch, NetworkIO *back_deltas) override
 
- Public Member Functions inherited from tesseract::Reconfig
TESS_API Reconfig (const char *name, int ni, int x_scale, int y_scale)
 
 ~Reconfig () override=default
 
StaticShape OutputShape (const StaticShape &input_shape) const override
 
std::string spec () const override
 
int XScaleFactor () const override
 
bool Serialize (TFile *fp) const override
 
bool DeSerialize (TFile *fp) override
 
void Forward (bool debug, const NetworkIO &input, const TransposedArray *input_transpose, NetworkScratch *scratch, NetworkIO *output) override
 
bool Backward (bool debug, const NetworkIO &fwd_deltas, NetworkScratch *scratch, NetworkIO *back_deltas) override
 
- Public Member Functions inherited from tesseract::Network
 Network ()
 
 Network (NetworkType type, const std::string &name, int ni, int no)
 
virtual ~Network ()=default
 
NetworkType type () const
 
bool IsTraining () const
 
bool needs_to_backprop () const
 
int num_weights () const
 
int NumInputs () const
 
int NumOutputs () const
 
virtual StaticShape InputShape () const
 
const std::string & name () const
 
bool TestFlag (NetworkFlags flag) const
 
virtual bool IsPlumbingType () const
 
virtual void SetEnableTraining (TrainingState state)
 
virtual void SetNetworkFlags (uint32_t flags)
 
virtual int InitWeights (float range, TRand *randomizer)
 
virtual int RemapOutputs ([[maybe_unused]] int old_no, [[maybe_unused]] const std::vector< int > &code_map)
 
virtual void ConvertToInt ()
 
virtual void SetRandomizer (TRand *randomizer)
 
virtual bool SetupNeedsBackprop (bool needs_backprop)
 
virtual void CacheXScaleFactor ([[maybe_unused]] int factor)
 
virtual void Update ([[maybe_unused]] float learning_rate, [[maybe_unused]] float momentum, [[maybe_unused]] float adam_beta, [[maybe_unused]] int num_samples)
 
virtual void CountAlternators ([[maybe_unused]] const Network &other, [[maybe_unused]] TFloat *same, [[maybe_unused]] TFloat *changed) const
 
void DisplayForward (const NetworkIO &matrix)
 
void DisplayBackward (const NetworkIO &matrix)
 

Additional Inherited Members

- Static Public Member Functions inherited from tesseract::Network
static NetworkCreateFromFile (TFile *fp)
 
static void ClearWindow (bool tess_coords, const char *window_name, int width, int height, ScrollView **window)
 
static int DisplayImage (Image pix, ScrollView *window)
 
- Protected Member Functions inherited from tesseract::Network
TFloat Random (TFloat range)
 
- Protected Attributes inherited from tesseract::Reconfig
StrideMap back_map_
 
int32_t x_scale_
 
int32_t y_scale_
 
- Protected Attributes inherited from tesseract::Network
NetworkType type_
 
TrainingState training_
 
bool needs_to_backprop_
 
int32_t network_flags_
 
int32_t ni_
 
int32_t no_
 
int32_t num_weights_
 
std::string name_
 
ScrollViewforward_win_
 
ScrollViewbackward_win_
 
TRandrandomizer_
 

Detailed Description

Definition at line 29 of file maxpool.h.

Constructor & Destructor Documentation

◆ Maxpool()

tesseract::Maxpool::Maxpool ( const char *  name,
int  ni,
int  x_scale,
int  y_scale 
)

Definition at line 22 of file maxpool.cpp.

23  : Reconfig(name, ni, x_scale, y_scale) {
24  type_ = NT_MAXPOOL;
25  no_ = ni;
26 }
@ NT_MAXPOOL
Definition: network.h:46
NetworkType type_
Definition: network.h:300
const std::string & name() const
Definition: network.h:140
TESS_API Reconfig(const char *name, int ni, int x_scale, int y_scale)
Definition: reconfig.cpp:23

◆ ~Maxpool()

tesseract::Maxpool::~Maxpool ( )
overridedefault

Member Function Documentation

◆ Backward()

bool tesseract::Maxpool::Backward ( bool  debug,
const NetworkIO fwd_deltas,
NetworkScratch scratch,
NetworkIO back_deltas 
)
overridevirtual

Implements tesseract::Network.

Definition at line 70 of file maxpool.cpp.

71  {
72  back_deltas->ResizeToMap(fwd_deltas.int_mode(), back_map_, ni_);
73  back_deltas->MaxpoolBackward(fwd_deltas, maxes_);
74  return true;
75 }
StrideMap back_map_
Definition: reconfig.h:75

◆ DeSerialize()

bool tesseract::Maxpool::DeSerialize ( TFile fp)
overridevirtual

Implements tesseract::Network.

Definition at line 29 of file maxpool.cpp.

29  {
30  bool result = Reconfig::DeSerialize(fp);
31  no_ = ni_;
32  return result;
33 }
bool DeSerialize(TFile *fp) override
Definition: reconfig.cpp:56

◆ Forward()

void tesseract::Maxpool::Forward ( bool  debug,
const NetworkIO input,
const TransposedArray input_transpose,
NetworkScratch scratch,
NetworkIO output 
)
overridevirtual

Implements tesseract::Network.

Definition at line 37 of file maxpool.cpp.

38  {
39  output->ResizeScaled(input, x_scale_, y_scale_, no_);
40  maxes_.ResizeNoInit(output->Width(), ni_);
41  back_map_ = input.stride_map();
42 
43  StrideMap::Index dest_index(output->stride_map());
44  do {
45  int out_t = dest_index.t();
46  StrideMap::Index src_index(input.stride_map(), dest_index.index(FD_BATCH),
47  dest_index.index(FD_HEIGHT) * y_scale_,
48  dest_index.index(FD_WIDTH) * x_scale_);
49  // Find the max input out of x_scale_ groups of y_scale_ inputs.
50  // Do it independently for each input dimension.
51  int *max_line = maxes_[out_t];
52  int in_t = src_index.t();
53  output->CopyTimeStepFrom(out_t, input, in_t);
54  for (int i = 0; i < ni_; ++i) {
55  max_line[i] = in_t;
56  }
57  for (int x = 0; x < x_scale_; ++x) {
58  for (int y = 0; y < y_scale_; ++y) {
59  StrideMap::Index src_xy(src_index);
60  if (src_xy.AddOffset(x, FD_WIDTH) && src_xy.AddOffset(y, FD_HEIGHT)) {
61  output->MaxpoolTimeStep(out_t, input, src_xy.t(), max_line);
62  }
63  }
64  }
65  } while (dest_index.Increment());
66 }
@ FD_WIDTH
Definition: stridemap.h:35
@ FD_BATCH
Definition: stridemap.h:33
@ FD_HEIGHT
Definition: stridemap.h:34
void ResizeNoInit(int size1, int size2, int pad=0)
Definition: matrix.h:94
int32_t y_scale_
Definition: reconfig.h:78
int32_t x_scale_
Definition: reconfig.h:77

◆ spec()

std::string tesseract::Maxpool::spec ( ) const
inlineoverridevirtual

Reimplemented from tesseract::Network.

Definition at line 36 of file maxpool.h.

36  {
37  return "Mp" + std::to_string(y_scale_) + "," + std::to_string(x_scale_);
38  }

The documentation for this class was generated from the following files: