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53fc4456cc
Eliminated the flexfx scheme for calling global feature extractor functions through an array of function pointers. Deleted dead code I found as a by-product. This CL does not change BlobToTrainingSample or ExtractFeatures to be full members of Classify (the eventual goal) as that would make it even bigger, since there are a lot of callers to these functions. When ExtractFeatures and BlobToTrainingSample are members of Classify they will be able to access control parameters in Classify, which will greatly simplify developing variations to the feature extraction process.
87 lines
3.3 KiB
C++
87 lines
3.3 KiB
C++
/******************************************************************************
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** Filename: mf.c
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** Purpose: Micro-feature interface to flexible feature extractor.
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** Author: Dan Johnson
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** History: Thu May 24 09:08:38 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 "mf.h"
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#include "featdefs.h"
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#include "mfdefs.h"
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#include "mfx.h"
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#include <math.h>
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/**----------------------------------------------------------------------------
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Global Data Definitions and Declarations
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----------------------------------------------------------------------------**/
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/**----------------------------------------------------------------------------
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Private Code
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----------------------------------------------------------------------------**/
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/*---------------------------------------------------------------------------*/
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FEATURE_SET ExtractMicros(TBLOB* Blob, const DENORM& cn_denorm) {
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/*
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** Parameters:
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** Blob blob to extract micro-features from
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** denorm control parameter to feature extractor.
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** Globals: none
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** Operation: Call the old micro-feature extractor and then copy
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** the features into the new format. Then deallocate the
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** old micro-features.
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** Return: Micro-features for Blob.
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** Exceptions: none
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** History: Wed May 23 18:06:38 1990, DSJ, Created.
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*/
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int NumFeatures;
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MICROFEATURES Features, OldFeatures;
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FEATURE_SET FeatureSet;
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FEATURE Feature;
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MICROFEATURE OldFeature;
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OldFeatures = BlobMicroFeatures(Blob, cn_denorm);
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if (OldFeatures == NULL)
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return NULL;
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NumFeatures = count (OldFeatures);
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FeatureSet = NewFeatureSet (NumFeatures);
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Features = OldFeatures;
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iterate(Features) {
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OldFeature = (MICROFEATURE) first_node (Features);
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Feature = NewFeature (&MicroFeatureDesc);
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Feature->Params[MFDirection] = OldFeature[ORIENTATION];
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Feature->Params[MFXPosition] = OldFeature[XPOSITION];
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Feature->Params[MFYPosition] = OldFeature[YPOSITION];
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Feature->Params[MFLength] = OldFeature[MFLENGTH];
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// Bulge features are deprecated and should not be used. Set to 0.
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Feature->Params[MFBulge1] = 0.0f;
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Feature->Params[MFBulge2] = 0.0f;
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#ifndef _WIN32
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// Assert that feature parameters are well defined.
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int i;
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for (i = 0; i < Feature->Type->NumParams; i++) {
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ASSERT_HOST(!isnan(Feature->Params[i]));
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}
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#endif
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AddFeature(FeatureSet, Feature);
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}
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FreeMicroFeatures(OldFeatures);
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return FeatureSet;
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} /* ExtractMicros */
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