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featdefs.h
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1 /******************************************************************************
2 ** Filename: featdefs.h
3 ** Purpose: Definitions of currently defined feature types.
4 ** Author: Dan Johnson
5 ** History: Mon May 21 08:28:01 1990, DSJ, Created.
6 **
7 ** (c) Copyright Hewlett-Packard Company, 1988.
8 ** Licensed under the Apache License, Version 2.0 (the "License");
9 ** you may not use this file except in compliance with the License.
10 ** You may obtain a copy of the License at
11 ** http://www.apache.org/licenses/LICENSE-2.0
12 ** Unless required by applicable law or agreed to in writing, software
13 ** distributed under the License is distributed on an "AS IS" BASIS,
14 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 ** See the License for the specific language governing permissions and
16 ** limitations under the License.
17 ******************************************************************************/
18 #ifndef FEATDEFS_H
19 #define FEATDEFS_H
20
24 #include "ocrfeatures.h"
25
26 /* Enumerate the different types of features currently defined. */
27 #define NUM_FEATURE_TYPES 4
28 extern const char* kMicroFeatureType;
29 extern const char* kCNFeatureType;
30 extern const char* kIntFeatureType;
31 extern const char* kGeoFeatureType;
32
33 /* define error traps which can be triggered by this module.*/
34 #define ILLEGAL_SHORT_NAME 2000
35
36 /* A character is described by multiple sets of extracted features. Each
37 set contains a number of features of a particular type, for example, a
38 set of bays, or a set of closures, or a set of microfeatures. Each
39 feature consists of a number of parameters. All features within a
40 feature set contain the same number of parameters.*/
41
42 struct CHAR_DESC_STRUCT {
43 uinT32 NumFeatureSets;
44 FEATURE_SET FeatureSets[NUM_FEATURE_TYPES];
45 };
46 typedef CHAR_DESC_STRUCT *CHAR_DESC;
47
48 struct FEATURE_DEFS_STRUCT {
49 uinT32 NumFeatureTypes;
50 const FEATURE_DESC_STRUCT* FeatureDesc[NUM_FEATURE_TYPES];
51 const FEATURE_EXT_STRUCT* FeatureExtractors[NUM_FEATURE_TYPES];
52 int FeatureEnabled[NUM_FEATURE_TYPES];
53 };
54 typedef FEATURE_DEFS_STRUCT *FEATURE_DEFS;
55
56 /*----------------------------------------------------------------------
57 Generic functions for manipulating character descriptions
58 ----------------------------------------------------------------------*/
59 void InitFeatureDefs(FEATURE_DEFS_STRUCT *featuredefs);
60
61 void FreeCharDescription(CHAR_DESC CharDesc);
62
63 CHAR_DESC NewCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs);
64
65 bool ValidCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs,
66 CHAR_DESC CharDesc);
67
68 void WriteCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs,
69 FILE *File, CHAR_DESC CharDesc);
70
71 CHAR_DESC ReadCharDescription(const FEATURE_DEFS_STRUCT &FeatureDefs,
72 FILE *File);
73
74 int ShortNameToFeatureType(const FEATURE_DEFS_STRUCT &FeatureDefs,
75 const char *ShortName);
76
80 extern const FEATURE_DESC_STRUCT MicroFeatureDesc;
81 extern const FEATURE_DESC_STRUCT PicoFeatDesc;
82 extern const FEATURE_DESC_STRUCT CharNormDesc;
83 extern const FEATURE_DESC_STRUCT OutlineFeatDesc;
84 extern const FEATURE_DESC_STRUCT IntFeatDesc;
85 extern const FEATURE_DESC_STRUCT GeoFeatDesc;
86 #endif