mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-03 17:29:04 +08:00
91 lines
3.3 KiB
C++
91 lines
3.3 KiB
C++
///////////////////////////////////////////////////////////////////////
|
|
// File: tfnetwork.h
|
|
// Description: Encapsulation of an entire tensorflow graph as a
|
|
// Tesseract Network.
|
|
// Author: Ray Smith
|
|
// Created: Fri Feb 26 09:35:29 PST 2016
|
|
//
|
|
// (C) Copyright 2016, Google Inc.
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
///////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef TESSERACT_LSTM_TFNETWORK_H_
|
|
#define TESSERACT_LSTM_TFNETWORK_H_
|
|
|
|
#ifdef INCLUDE_TENSORFLOW
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include "network.h"
|
|
#include "static_shape.h"
|
|
#include "tfnetwork.proto.h"
|
|
#include "third_party/tensorflow/core/framework/graph.pb.h"
|
|
#include "third_party/tensorflow/core/public/session.h"
|
|
|
|
namespace tesseract {
|
|
|
|
class TFNetwork : public Network {
|
|
public:
|
|
explicit TFNetwork(const STRING& name);
|
|
virtual ~TFNetwork();
|
|
|
|
// Returns the required shape input to the network.
|
|
virtual StaticShape InputShape() const { return input_shape_; }
|
|
// Returns the shape output from the network given an input shape (which may
|
|
// be partially unknown ie zero).
|
|
virtual StaticShape OutputShape(const StaticShape& input_shape) const {
|
|
return output_shape_;
|
|
}
|
|
|
|
virtual STRING spec() const { return spec_.c_str(); }
|
|
|
|
// Deserializes *this from a serialized TFNetwork proto. Returns 0 if failed,
|
|
// otherwise the global step of the serialized graph.
|
|
int InitFromProtoStr(const string& proto_str);
|
|
// The number of classes in this network should be equal to those in the
|
|
// recoder_ in LSTMRecognizer.
|
|
int num_classes() const { return output_shape_.depth(); }
|
|
|
|
// Writes to the given file. Returns false in case of error.
|
|
// Should be overridden by subclasses, but called by their Serialize.
|
|
virtual bool Serialize(TFile* fp) const;
|
|
// Reads from the given file. Returns false in case of error.
|
|
// Should be overridden by subclasses, but NOT called by their DeSerialize.
|
|
virtual bool DeSerialize(TFile* fp);
|
|
|
|
// Runs forward propagation of activations on the input line.
|
|
// See Network for a detailed discussion of the arguments.
|
|
virtual void Forward(bool debug, const NetworkIO& input,
|
|
const TransposedArray* input_transpose,
|
|
NetworkScratch* scratch, NetworkIO* output);
|
|
|
|
private:
|
|
int InitFromProto();
|
|
|
|
// The original network definition for reference.
|
|
string spec_;
|
|
// Input tensor parameters.
|
|
StaticShape input_shape_;
|
|
// Output tensor parameters.
|
|
StaticShape output_shape_;
|
|
// The tensor flow graph is contained in here.
|
|
std::unique_ptr<tensorflow::Session> session_;
|
|
// The serialized graph is also contained in here.
|
|
TFNetworkModel model_proto_;
|
|
};
|
|
|
|
} // namespace tesseract.
|
|
|
|
#endif // ifdef INCLUDE_TENSORFLOW
|
|
|
|
#endif // TESSERACT_TENSORFLOW_TFNETWORK_H_
|