Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/lstm/convolve.h @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
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1 ///////////////////////////////////////////////////////////////////////
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2 // File: convolve.h
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3 // Description: Convolutional layer that stacks the inputs over its rectangle
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4 // and pulls in random data to fill out-of-input inputs.
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5 // Output is therefore same size as its input, but deeper.
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6 // Author: Ray Smith
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7 //
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8 // (C) Copyright 2014, Google Inc.
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9 // Licensed under the Apache License, Version 2.0 (the "License");
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10 // you may not use this file except in compliance with the License.
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11 // You may obtain a copy of the License at
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12 // http://www.apache.org/licenses/LICENSE-2.0
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13 // Unless required by applicable law or agreed to in writing, software
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14 // distributed under the License is distributed on an "AS IS" BASIS,
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15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 // See the License for the specific language governing permissions and
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17 // limitations under the License.
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18 ///////////////////////////////////////////////////////////////////////
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20 #ifndef TESSERACT_LSTM_CONVOLVE_H_
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21 #define TESSERACT_LSTM_CONVOLVE_H_
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23 #include "matrix.h"
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24 #include "network.h"
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26 namespace tesseract {
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28 // Makes each time-step deeper by stacking inputs over its rectangle. Does not
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29 // affect the size of its input. Achieves this by bringing in random values in
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30 // out-of-input areas.
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31 class Convolve : public Network {
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32 public:
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33 // The area of convolution is 2*half_x + 1 by 2*half_y + 1, forcing it to
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34 // always be odd, so the center is the current pixel.
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35 TESS_API
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36 Convolve(const std::string &name, int ni, int half_x, int half_y);
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37 ~Convolve() override = default;
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39 std::string spec() const override {
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40 return "C" + std::to_string(half_y_ * 2 + 1) + "," + std::to_string(half_x_ * 2 + 1);
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41 }
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43 // Writes to the given file. Returns false in case of error.
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44 bool Serialize(TFile *fp) const override;
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45 // Reads from the given file. Returns false in case of error.
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46 bool DeSerialize(TFile *fp) override;
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48 // Runs forward propagation of activations on the input line.
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49 // See Network for a detailed discussion of the arguments.
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50 void Forward(bool debug, const NetworkIO &input, const TransposedArray *input_transpose,
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51 NetworkScratch *scratch, NetworkIO *output) override;
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53 // Runs backward propagation of errors on the deltas line.
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54 // See Network for a detailed discussion of the arguments.
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55 bool Backward(bool debug, const NetworkIO &fwd_deltas, NetworkScratch *scratch,
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56 NetworkIO *back_deltas) override;
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58 private:
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59 void DebugWeights() override {
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60 tprintf("Must override Network::DebugWeights for type %d\n", type_);
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61 }
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63 protected:
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64 // Serialized data.
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65 int32_t half_x_;
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66 int32_t half_y_;
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67 };
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69 } // namespace tesseract.
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71 #endif // TESSERACT_LSTM_SUBSAMPLE_H_