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https://github.com/tesseract-ocr/tesseract.git
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101 lines
3.9 KiB
C++
101 lines
3.9 KiB
C++
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/******************************************************************************
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** Filename: extract.c
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** Purpose: Generic high level feature extractor routines.
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** Author: Dan Johnson
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** History: Sun Jan 21 09:44:08 1990, DSJ, Created.
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**
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** (c) Copyright Hewlett-Packard Company, 1988.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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******************************************************************************/
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/**----------------------------------------------------------------------------
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Include Files and Type Defines
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----------------------------------------------------------------------------**/
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#include "extract.h"
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#include "variables.h"
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#include "flexfx.h"
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#include "funcdefs.h"
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#include "danerror.h"
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typedef CHAR_FEATURES (*CF_FUNC) ();
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/**----------------------------------------------------------------------------
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Private Function Prototypes
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----------------------------------------------------------------------------**/
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void ExtractorStub();
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/**----------------------------------------------------------------------------
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Global Data Definitions and Declarations
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----------------------------------------------------------------------------**/
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/* tables to keep track of the different low level feature extractors */
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#define NUM_FX 3
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#define DEFAULT_FX 2
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int CurrentFx = DEFAULT_FX;
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/**----------------------------------------------------------------------------
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Public Code
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----------------------------------------------------------------------------**/
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/*---------------------------------------------------------------------------*/
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CHAR_DESC ExtractBlobFeatures(TBLOB *Blob, LINE_STATS *LineStats) {
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/*
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** Parameters:
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** Blob blob to extract features from
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** LineStats statistics about line blob is in
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** Operation: Extract features from Blob by calling the feature
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** extractor which is currently being used. This routine
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** simply provides a high level interface to feature
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** extraction. The caller can extract any type of features
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** from a blob without understanding any lower level details.
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** Return: The character features extracted from Blob.
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** Exceptions: none
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** History: Sun Jan 21 10:07:28 1990, DSJ, Created.
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*/
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return (ExtractFlexFeatures (Blob, LineStats));
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} /* ExtractBlobFeatures */
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/*---------------------------------------------------------------------------*/
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void InitExtractorVars() {
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/*
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** Parameters: none
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** Globals: none
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** Operation: Install global extractor variables into the variable
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** system.
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** Return: none
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** Exceptions: none
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** History: Sun Jan 21 10:19:59 1990, DSJ, Created.
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*/
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// VALUE dummy;
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InitFlexFXVars();
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} /* InitExtractorVars */
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/**----------------------------------------------------------------------------
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Private Code
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----------------------------------------------------------------------------**/
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/*---------------------------------------------------------------------------*/
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void
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ExtractorStub ()
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/*
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** Parameters: none
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** Globals: none
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** Operation: This routine is used to stub out feature extractors
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** that are no longer used. It simply calls DoError.
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** Return: none
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** Exceptions: none
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** History: Wed Jan 2 14:16:49 1991, DSJ, Created.
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*/
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#define DUMMY_ERROR 1
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{
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DoError (DUMMY_ERROR, "Selected feature extractor has been stubbed out!");
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} /* ExtractorStub */
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