Tesseract  3.02
tesseract-ocr/cube/feature_hybrid.cpp
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00001 /**********************************************************************
00002  * File:        feature_chebyshev.cpp
00003  * Description: Implementation of the Chebyshev coefficients Feature Class
00004  * Author:    Ahmad Abdulkader
00005  * Created:   2008
00006  *
00007  * (C) Copyright 2008, Google Inc.
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  *
00018  **********************************************************************/
00019 
00020 #include <stdio.h>
00021 #include <stdlib.h>
00022 #include <math.h>
00023 #include <string>
00024 #include <vector>
00025 #include <algorithm>
00026 #include "feature_base.h"
00027 #include "feature_hybrid.h"
00028 #include "cube_utils.h"
00029 #include "const.h"
00030 #include "char_samp.h"
00031 
00032 namespace tesseract {
00033 
00034 FeatureHybrid::FeatureHybrid(TuningParams *params)
00035     :FeatureBase(params) {
00036   feature_bmp_ = new FeatureBmp(params);
00037   feature_chebyshev_ = new FeatureChebyshev(params);
00038 }
00039 
00040 FeatureHybrid::~FeatureHybrid() {
00041   delete feature_bmp_;
00042   delete feature_chebyshev_;
00043 }
00044 
00045 // Render a visualization of the features to a CharSamp.
00046 // This is mainly used by visual-debuggers
00047 CharSamp *FeatureHybrid::ComputeFeatureBitmap(CharSamp *char_samp) {
00048   return char_samp;
00049 }
00050 
00051 
00052 // Compute the features of a given CharSamp
00053 bool FeatureHybrid::ComputeFeatures(CharSamp *char_samp, float *features) {
00054   if (feature_bmp_ == NULL || feature_chebyshev_ == NULL) {
00055     return false;
00056   }
00057   if (!feature_bmp_->ComputeFeatures(char_samp, features)) {
00058     return false;
00059   }
00060   return feature_chebyshev_->ComputeFeatures(char_samp,
00061     features + feature_bmp_->FeatureCnt());
00062 }
00063 
00064 }  // namespace tesseract