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https://github.com/tesseract-ocr/tesseract.git
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86 lines
3.5 KiB
C
86 lines
3.5 KiB
C
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/******************************************************************************
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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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/* 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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typedef struct
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{
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UINT32 NumFeatureSets;
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FEATURE_SET FeatureSets[NUM_FEATURE_TYPES];
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} CHAR_DESC_STRUCT;
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typedef CHAR_DESC_STRUCT *CHAR_DESC;
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typedef struct
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{
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UINT32 NumFeatureTypes;
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FEATURE_DESC FeatureDesc[NUM_FEATURE_TYPES];
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FEATURE_EXT_STRUCT* FeatureExtractors[NUM_FEATURE_TYPES];
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int FeatureEnabled[NUM_FEATURE_TYPES];
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} FEATURE_DEFS_STRUCT;
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typedef FEATURE_DEFS_STRUCT *FEATURE_DEFS;
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/*----------------------------------------------------------------------
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Macros for finding feature definitions
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----------------------------------------------------------------------*/
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#define NumFeaturesDefined() (FeatureDefs.NumFeatureTypes)
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#define DefinitionOf(Type) (FeatureDefs.FeatureDesc[Type])
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#define ExtractorOf(Type) (FeatureDefs.FeatureExtractors[Type])
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#define FeatureOn(Type) (FeatureDefs.FeatureEnabled[Type])
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/*----------------------------------------------------------------------
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Macros for manipulating character descriptions
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----------------------------------------------------------------------*/
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#define NumFeatureSetsIn(Char) ((Char)->NumFeatureSets)
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#define FeaturesOfType(Char, Type) ((Char)->FeatureSets[Type])
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/*----------------------------------------------------------------------
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Generic functions for manipulating character descriptions
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----------------------------------------------------------------------*/
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void FreeCharDescription(CHAR_DESC CharDesc);
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CHAR_DESC NewCharDescription();
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void WriteCharDescription(FILE *File, CHAR_DESC CharDesc);
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CHAR_DESC ReadCharDescription(FILE *File);
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int ShortNameToFeatureType(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 FEATURE_DEFS_STRUCT FeatureDefs;
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#endif
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