Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/training/mergenf.h @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 /******************************************************************************
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2 ** Filename: MergeNF.c
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3 ** Purpose: Program for merging similar nano-feature protos
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4 ** Author: Dan Johnson
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5 **
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6 ** (c) Copyright Hewlett-Packard Company, 1988.
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7 ** Licensed under the Apache License, Version 2.0 (the "License");
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8 ** you may not use this file except in compliance with the License.
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9 ** You may obtain a copy of the License at
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10 ** http://www.apache.org/licenses/LICENSE-2.0
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11 ** Unless required by applicable law or agreed to in writing, software
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12 ** distributed under the License is distributed on an "AS IS" BASIS,
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13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 ** See the License for the specific language governing permissions and
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15 ** limitations under the License.
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16 *****************************************************************************/
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18 #ifndef TESSERACT_TRAINING_MERGENF_H_
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19 #define TESSERACT_TRAINING_MERGENF_H_
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21 /**----------------------------------------------------------------------------
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22 Include Files and Type Defines
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23 ----------------------------------------------------------------------------**/
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24 #include "cluster.h"
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25 #include "ocrfeatures.h"
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26 #include "picofeat.h"
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27 #include "protos.h"
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29 #define WORST_MATCH_ALLOWED (0.9)
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30 #define WORST_EVIDENCE (1.0)
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31 #define MAX_LENGTH_MISMATCH (2.0 * GetPicoFeatureLength())
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33 #define PROTO_SUFFIX ".mf.p"
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34 #define CONFIG_SUFFIX ".cl"
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35 #define NO_PROTO (-1)
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36 #define XPOSITION 0
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37 #define YPOSITION 1
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38 #define MFLENGTH 2
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39 #define ORIENTATION 3
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41 struct FRECT {
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42 float MinX, MaxX, MinY, MaxY;
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43 };
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45 /**----------------------------------------------------------------------------
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46 Public Macros
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47 ----------------------------------------------------------------------------**/
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48 #define CenterX(M) ((M)[XPOSITION])
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49 #define CenterY(M) ((M)[YPOSITION])
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50 #define LengthOf(M) ((M)[MFLENGTH])
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51 #define OrientationOf(M) ((M)[ORIENTATION])
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53 /**----------------------------------------------------------------------------
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54 Public Function Prototypes
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55 ----------------------------------------------------------------------------**/
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56 float CompareProtos(tesseract::PROTO_STRUCT *p1, tesseract::PROTO_STRUCT *p2);
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58 void ComputeMergedProto(tesseract::PROTO_STRUCT *p1, tesseract::PROTO_STRUCT *p2, float w1, float w2,
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59 tesseract::PROTO_STRUCT *MergedProto);
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61 int FindClosestExistingProto(tesseract::CLASS_TYPE Class, int NumMerged[],
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62 tesseract::PROTOTYPE *Prototype);
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64 void MakeNewFromOld(tesseract::PROTO_STRUCT *New, tesseract::PROTOTYPE *Old);
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66 float SubfeatureEvidence(tesseract::FEATURE Feature, tesseract::PROTO_STRUCT *Proto);
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68 double EvidenceOf(double Similarity);
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70 bool DummyFastMatch(tesseract::FEATURE Feature, tesseract::PROTO_STRUCT *Proto);
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72 void ComputePaddedBoundingBox(tesseract::PROTO_STRUCT *Proto, float TangentPad, float OrthogonalPad,
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73 FRECT *BoundingBox);
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75 bool PointInside(FRECT *Rectangle, float X, float Y);
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77 #endif // TESSERACT_TRAINING_MERGENF_H_