mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-22 14:44:07 +08:00
87 lines
3.3 KiB
C++
87 lines
3.3 KiB
C++
|
/******************************************************************************
|
||
|
** Filename: flexfx.c
|
||
|
** Purpose: Interface to flexible feature extractor.
|
||
|
** Author: Dan Johnson
|
||
|
** History: Wed May 23 13:45:10 1990, DSJ, Created.
|
||
|
**
|
||
|
** (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.
|
||
|
******************************************************************************/
|
||
|
/**----------------------------------------------------------------------------
|
||
|
Include Files and Type Defines
|
||
|
----------------------------------------------------------------------------**/
|
||
|
#include "flexfx.h"
|
||
|
#include "featdefs.h"
|
||
|
#include "variables.h"
|
||
|
#include "sigmenu.h"
|
||
|
#include "emalloc.h"
|
||
|
#include <string.h>
|
||
|
#include <stdio.h>
|
||
|
|
||
|
/**----------------------------------------------------------------------------
|
||
|
Public Code
|
||
|
----------------------------------------------------------------------------**/
|
||
|
/*---------------------------------------------------------------------------*/
|
||
|
CHAR_DESC ExtractFlexFeatures(TBLOB *Blob, LINE_STATS *LineStats) {
|
||
|
/*
|
||
|
** Parameters:
|
||
|
** Blob blob to extract features from
|
||
|
** LineStats statistics about text line Blob is on
|
||
|
** Globals: none
|
||
|
** Operation: Allocate a new character descriptor and fill it in by
|
||
|
** calling all feature extractors which are enabled.
|
||
|
** Return: Structure containing features extracted from Blob.
|
||
|
** Exceptions: none
|
||
|
** History: Wed May 23 13:46:22 1990, DSJ, Created.
|
||
|
*/
|
||
|
int Type;
|
||
|
CHAR_DESC CharDesc;
|
||
|
|
||
|
CharDesc = NewCharDescription ();
|
||
|
|
||
|
for (Type = 0; Type < NumFeatureSetsIn(CharDesc); Type++)
|
||
|
if (ExtractorOf(Type) != NULL && ExtractorOf(Type)->Extractor != NULL)
|
||
|
FeaturesOfType(CharDesc, Type) =
|
||
|
ExtractUsing(ExtractorOf(Type)) (Blob, LineStats);
|
||
|
|
||
|
return (CharDesc);
|
||
|
|
||
|
} /* ExtractFlexFeatures */
|
||
|
|
||
|
|
||
|
/*---------------------------------------------------------------------------*/
|
||
|
void
|
||
|
InitFlexFXVars ()
|
||
|
/*
|
||
|
** Parameters: none
|
||
|
** Globals: none
|
||
|
** Operation: Add any control variables used by the feature extractors
|
||
|
** to the variable system. This includes the enable flag for
|
||
|
** each individual extractor. This routine needs to create
|
||
|
** a separate name for the enable for each feature extractor
|
||
|
** and allocate a string to contain that name. This is
|
||
|
** necessary since the "variables" routines do not create
|
||
|
** copies of the string names passed to them.
|
||
|
** Return: none
|
||
|
** Exceptions: none
|
||
|
** History: Wed May 23 15:59:23 1990, DSJ, Created.
|
||
|
*/
|
||
|
#define NamePrefix "Enable"
|
||
|
#define NameSuffix "Features"
|
||
|
{
|
||
|
int Type;
|
||
|
|
||
|
SetupExtractors();
|
||
|
for (Type = 0; Type < NumFeaturesDefined (); Type++) {
|
||
|
InitFXVarsUsing (ExtractorOf (Type)) ();
|
||
|
}
|
||
|
} /* InitFlexFXVars */
|