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47a326b02d
Replace the Tesseract specific data types in header files which are part of Debian package libtesseract-dev by POSIX data types. Update also matching cpp files. Signed-off-by: Stefan Weil <sw@weilnetz.de>
86 lines
3.3 KiB
C++
86 lines
3.3 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: reconfig.h
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// Description: Network layer that reconfigures the scaling vs feature
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// depth.
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// Author: Ray Smith
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// Created: Wed Feb 26 15:37:42 PST 2014
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//
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// (C) Copyright 2014, Google Inc.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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///////////////////////////////////////////////////////////////////////
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#ifndef TESSERACT_LSTM_RECONFIG_H_
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#define TESSERACT_LSTM_RECONFIG_H_
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#include "genericvector.h"
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#include "matrix.h"
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#include "network.h"
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namespace tesseract {
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// Reconfigures (Shrinks) the inputs by concatenating an x_scale by y_scale tile
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// of inputs together, producing a single, deeper output per tile.
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// Note that fractional parts are truncated for efficiency, so make sure the
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// input stride is a multiple of the y_scale factor!
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class Reconfig : public Network {
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public:
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Reconfig(const STRING& name, int ni, int x_scale, int y_scale);
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virtual ~Reconfig();
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// Returns the shape output from the network given an input shape (which may
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// be partially unknown ie zero).
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virtual StaticShape OutputShape(const StaticShape& input_shape) const;
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virtual STRING spec() const {
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STRING spec;
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spec.add_str_int("S", y_scale_);
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spec.add_str_int(",", x_scale_);
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return spec;
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}
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// Returns an integer reduction factor that the network applies to the
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// time sequence. Assumes that any 2-d is already eliminated. Used for
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// scaling bounding boxes of truth data.
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// WARNING: if GlobalMinimax is used to vary the scale, this will return
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// the last used scale factor. Call it before any forward, and it will return
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// the minimum scale factor of the paths through the GlobalMinimax.
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virtual int XScaleFactor() const;
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// Writes to the given file. Returns false in case of error.
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virtual bool Serialize(TFile* fp) const;
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// Reads from the given file. Returns false in case of error.
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virtual bool DeSerialize(TFile* fp);
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// Runs forward propagation of activations on the input line.
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// See Network for a detailed discussion of the arguments.
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virtual void Forward(bool debug, const NetworkIO& input,
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const TransposedArray* input_transpose,
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NetworkScratch* scratch, NetworkIO* output);
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// Runs backward propagation of errors on the deltas line.
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// See Network for a detailed discussion of the arguments.
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virtual bool Backward(bool debug, const NetworkIO& fwd_deltas,
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NetworkScratch* scratch,
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NetworkIO* back_deltas);
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protected:
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// Non-serialized data used to store parameters between forward and back.
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StrideMap back_map_;
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// Serialized data.
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int32_t x_scale_;
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int32_t y_scale_;
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};
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} // namespace tesseract.
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#endif // TESSERACT_LSTM_SUBSAMPLE_H_
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