Tesseract  3.02
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flexfx.cpp
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1 /******************************************************************************
2  ** Filename: flexfx.c
3  ** Purpose: Interface to flexible feature extractor.
4  ** Author: Dan Johnson
5  ** History: Wed May 23 13:45:10 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  ******************************************************************************/
21 #include "flexfx.h"
22 #include "featdefs.h"
23 #include "emalloc.h"
24 #include <string.h>
25 #include <stdio.h>
26 
30 /*---------------------------------------------------------------------------*/
32  TBLOB *Blob, const DENORM& denorm) {
33 /*
34  ** Parameters:
35  ** Blob blob to extract features from
36  ** denorm control parameter for feature extractor
37  ** Globals: none
38  ** Operation: Allocate a new character descriptor and fill it in by
39  ** calling all feature extractors which are enabled.
40  ** Return: Structure containing features extracted from Blob.
41  ** Exceptions: none
42  ** History: Wed May 23 13:46:22 1990, DSJ, Created.
43  */
44  int Type;
45  CHAR_DESC CharDesc;
46 
47  CharDesc = NewCharDescription(FeatureDefs);
48 
49  for (Type = 0; Type < CharDesc->NumFeatureSets; Type++)
50  if (FeatureDefs.FeatureExtractors[Type] != NULL &&
51  FeatureDefs.FeatureExtractors[Type]->Extractor != NULL) {
52  CharDesc->FeatureSets[Type] =
53  (FeatureDefs.FeatureExtractors[Type])->Extractor(Blob, denorm);
54  if (CharDesc->FeatureSets[Type] == NULL) {
55  FreeCharDescription(CharDesc);
56  return NULL;
57  }
58  }
59 
60  return (CharDesc);
61 
62 } /* ExtractFlexFeatures */