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https://github.com/tesseract-ocr/tesseract.git
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53fc4456cc
Eliminated the flexfx scheme for calling global feature extractor functions through an array of function pointers. Deleted dead code I found as a by-product. This CL does not change BlobToTrainingSample or ExtractFeatures to be full members of Classify (the eventual goal) as that would make it even bigger, since there are a lot of callers to these functions. When ExtractFeatures and BlobToTrainingSample are members of Classify they will be able to access control parameters in Classify, which will greatly simplify developing variations to the feature extraction process.
86 lines
3.5 KiB
C
86 lines
3.5 KiB
C
/******************************************************************************
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** Filename: featdefs.h
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** Purpose: Definitions of currently defined feature types.
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** Author: Dan Johnson
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** History: Mon May 21 08:28:01 1990, DSJ, Created.
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**
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** (c) Copyright Hewlett-Packard Company, 1988.
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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 FEATDEFS_H
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#define FEATDEFS_H
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/**----------------------------------------------------------------------------
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Include Files and Type Defines
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----------------------------------------------------------------------------**/
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#include "ocrfeatures.h"
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/* Enumerate the different types of features currently defined. */
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#define NUM_FEATURE_TYPES 4
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extern const char* kMicroFeatureType;
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extern const char* kCNFeatureType;
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extern const char* kIntFeatureType;
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extern const char* kGeoFeatureType;
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/* define error traps which can be triggered by this module.*/
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#define ILLEGAL_SHORT_NAME 2000
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/* A character is described by multiple sets of extracted features. Each
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set contains a number of features of a particular type, for example, a
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set of bays, or a set of closures, or a set of microfeatures. Each
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feature consists of a number of parameters. All features within a
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feature set contain the same number of parameters.*/
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struct CHAR_DESC_STRUCT {
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uinT32 NumFeatureSets;
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FEATURE_SET FeatureSets[NUM_FEATURE_TYPES];
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};
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typedef CHAR_DESC_STRUCT *CHAR_DESC;
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struct FEATURE_DEFS_STRUCT {
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inT32 NumFeatureTypes;
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const FEATURE_DESC_STRUCT* FeatureDesc[NUM_FEATURE_TYPES];
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int FeatureEnabled[NUM_FEATURE_TYPES];
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};
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typedef FEATURE_DEFS_STRUCT *FEATURE_DEFS;
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/*----------------------------------------------------------------------
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Generic functions for manipulating character descriptions
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----------------------------------------------------------------------*/
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void InitFeatureDefs(FEATURE_DEFS_STRUCT *featuredefs);
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void FreeCharDescription(CHAR_DESC CharDesc);
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CHAR_DESC NewCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs);
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bool ValidCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs,
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CHAR_DESC CharDesc);
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void WriteCharDescription(const FEATURE_DEFS_STRUCT& FeatureDefs,
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CHAR_DESC CharDesc, STRING* str);
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CHAR_DESC ReadCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs,
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FILE *File);
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int ShortNameToFeatureType(const FEATURE_DEFS_STRUCT &FeatureDefs,
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const char *ShortName);
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/**----------------------------------------------------------------------------
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Global Data Definitions and Declarations
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----------------------------------------------------------------------------**/
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extern const FEATURE_DESC_STRUCT MicroFeatureDesc;
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extern const FEATURE_DESC_STRUCT PicoFeatDesc;
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extern const FEATURE_DESC_STRUCT CharNormDesc;
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extern const FEATURE_DESC_STRUCT OutlineFeatDesc;
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extern const FEATURE_DESC_STRUCT IntFeatDesc;
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extern const FEATURE_DESC_STRUCT GeoFeatDesc;
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#endif
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