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Diffstat (limited to 'tesseract/src/classify/featdefs.h')
-rw-r--r-- | tesseract/src/classify/featdefs.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/tesseract/src/classify/featdefs.h b/tesseract/src/classify/featdefs.h new file mode 100644 index 00000000..eb8c66fe --- /dev/null +++ b/tesseract/src/classify/featdefs.h @@ -0,0 +1,87 @@ +/****************************************************************************** + ** Filename: featdefs.h + ** Purpose: Definitions of currently defined feature types. + ** Author: Dan Johnson + ** + ** (c) Copyright Hewlett-Packard Company, 1988. + ** Licensed under the Apache License, Version 2.0 (the "License"); + ** you may not use this file except in compliance with the License. + ** You may obtain a copy of the License at + ** http://www.apache.org/licenses/LICENSE-2.0 + ** Unless required by applicable law or agreed to in writing, software + ** distributed under the License is distributed on an "AS IS" BASIS, + ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + ** See the License for the specific language governing permissions and + ** limitations under the License. + ******************************************************************************/ + +#ifndef FEATDEFS_H +#define FEATDEFS_H + +#include "ocrfeatures.h" + +namespace tesseract { + +/* Enumerate the different types of features currently defined. */ +#define NUM_FEATURE_TYPES 4 +extern TESS_API const char* const kMicroFeatureType; +extern TESS_API const char* const kCNFeatureType; +extern TESS_API const char* const kIntFeatureType; +extern TESS_API const char* const kGeoFeatureType; + +/* A character is described by multiple sets of extracted features. Each + set contains a number of features of a particular type, for example, a + set of bays, or a set of closures, or a set of microfeatures. Each + feature consists of a number of parameters. All features within a + feature set contain the same number of parameters.*/ + +struct CHAR_DESC_STRUCT { + uint32_t NumFeatureSets; + FEATURE_SET FeatureSets[NUM_FEATURE_TYPES]; +}; +using CHAR_DESC = CHAR_DESC_STRUCT *; + +struct FEATURE_DEFS_STRUCT { + int32_t NumFeatureTypes; + const FEATURE_DESC_STRUCT* FeatureDesc[NUM_FEATURE_TYPES]; +}; +using FEATURE_DEFS = FEATURE_DEFS_STRUCT *; + +/*---------------------------------------------------------------------- + Generic functions for manipulating character descriptions +----------------------------------------------------------------------*/ +TESS_API +void InitFeatureDefs(FEATURE_DEFS_STRUCT *featuredefs); + +TESS_API +void FreeCharDescription(CHAR_DESC CharDesc); + +CHAR_DESC NewCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs); + +bool ValidCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs, + CHAR_DESC CharDesc); + +void WriteCharDescription(const FEATURE_DEFS_STRUCT& FeatureDefs, + CHAR_DESC CharDesc, STRING* str); + +TESS_API +CHAR_DESC ReadCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs, + FILE *File); + +TESS_API +uint32_t ShortNameToFeatureType(const FEATURE_DEFS_STRUCT &FeatureDefs, + const char *ShortName); + +/**---------------------------------------------------------------------------- + Global Data Definitions and Declarations +----------------------------------------------------------------------------**/ +extern const FEATURE_DESC_STRUCT MicroFeatureDesc; +extern TESS_API const FEATURE_DESC_STRUCT PicoFeatDesc; +extern const FEATURE_DESC_STRUCT CharNormDesc; +extern const FEATURE_DESC_STRUCT OutlineFeatDesc; +extern const FEATURE_DESC_STRUCT IntFeatDesc; +extern const FEATURE_DESC_STRUCT GeoFeatDesc; + +} // namespace tesseract + +#endif |