tesseract  3.03
/usr/local/google/home/jbreiden/tesseract-ocr-read-only/classify/flexfx.cpp
Go to the documentation of this file.
00001 /******************************************************************************
00002  **     Filename:    flexfx.c
00003  **     Purpose:     Interface to flexible feature extractor.
00004  **     Author:      Dan Johnson
00005  **     History:     Wed May 23 13:45:10 1990, DSJ, Created.
00006  **
00007  **     (c) Copyright Hewlett-Packard Company, 1988.
00008  ** Licensed under the Apache License, Version 2.0 (the "License");
00009  ** you may not use this file except in compliance with the License.
00010  ** You may obtain a copy of the License at
00011  ** http://www.apache.org/licenses/LICENSE-2.0
00012  ** Unless required by applicable law or agreed to in writing, software
00013  ** distributed under the License is distributed on an "AS IS" BASIS,
00014  ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00015  ** See the License for the specific language governing permissions and
00016  ** limitations under the License.
00017  ******************************************************************************/
00021 #include "flexfx.h"
00022 #include "featdefs.h"
00023 #include "emalloc.h"
00024 #include <string.h>
00025 #include <stdio.h>
00026 
00030 /*---------------------------------------------------------------------------*/
00031 // Deprecated! Will be deleted soon!
00032 // In the meantime, as all TBLOBs, Blob is in baseline normalized coords.
00033 // See SetupBLCNDenorms in intfx.cpp for other args.
00034 CHAR_DESC ExtractFlexFeatures(const FEATURE_DEFS_STRUCT &FeatureDefs,
00035                               TBLOB *Blob, const DENORM& bl_denorm,
00036                               const DENORM& cn_denorm,
00037                               const INT_FX_RESULT_STRUCT& fx_info) {
00038 /*
00039  **     Parameters:
00040  **             Blob            blob to extract features from
00041  **             denorm  control parameter for feature extractor
00042  **     Globals: none
00043  **     Operation: Allocate a new character descriptor and fill it in by
00044  **             calling all feature extractors which are enabled.
00045  **     Return: Structure containing features extracted from Blob.
00046  **     Exceptions: none
00047  **     History: Wed May 23 13:46:22 1990, DSJ, Created.
00048  */
00049   int Type;
00050   CHAR_DESC CharDesc;
00051 
00052   CharDesc = NewCharDescription(FeatureDefs);
00053 
00054   for (Type = 0; Type < CharDesc->NumFeatureSets; Type++)
00055     if (FeatureDefs.FeatureExtractors[Type] != NULL &&
00056         FeatureDefs.FeatureExtractors[Type]->Extractor != NULL) {
00057       CharDesc->FeatureSets[Type] =
00058         (FeatureDefs.FeatureExtractors[Type])->Extractor(Blob,
00059                                                          bl_denorm,
00060                                                          cn_denorm,
00061                                                          fx_info);
00062       if (CharDesc->FeatureSets[Type] == NULL) {
00063         tprintf("Feature extractor for type %d = %s returned NULL!\n",
00064                 Type, FeatureDefs.FeatureDesc[Type]->ShortName);
00065         FreeCharDescription(CharDesc);
00066         return NULL;
00067       }
00068     }
00069 
00070   return (CharDesc);
00071 
00072 }                                /* ExtractFlexFeatures */
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines