1 #ifndef _OPENCV_LBPFEATURES_H_
2 #define _OPENCV_LBPFEATURES_H_
6 #define LBPF_NAME "lbpFeatureParams"
7 struct CvLBPFeatureParams : CvFeatureParams
13 class CvLBPEvaluator : public CvFeatureEvaluator
16 virtual ~CvLBPEvaluator() {}
17 virtual void init(const CvFeatureParams *_featureParams,
18 int _maxSampleCount, Size _winSize );
19 virtual void setImage(const Mat& img, uchar clsLabel, int idx);
20 virtual float operator()(int featureIdx, int sampleIdx) const
21 { return (float)features[featureIdx].calc( sum, sampleIdx); }
22 virtual void writeFeatures( FileStorage &fs, const Mat& featureMap ) const;
24 virtual void generateFeatures();
30 Feature( int offset, int x, int y, int _block_w, int _block_h );
31 uchar calc( const Mat& _sum, size_t y ) const;
32 void write( FileStorage &fs ) const;
37 vector<Feature> features;
42 inline uchar CvLBPEvaluator::Feature::calc(const Mat &_sum, size_t y) const
44 const int* sum = _sum.ptr<int>((int)y);
45 int cval = sum[p[5]] - sum[p[6]] - sum[p[9]] + sum[p[10]];
47 return (uchar)((sum[p[0]] - sum[p[1]] - sum[p[4]] + sum[p[5]] >= cval ? 128 : 0) | // 0
48 (sum[p[1]] - sum[p[2]] - sum[p[5]] + sum[p[6]] >= cval ? 64 : 0) | // 1
49 (sum[p[2]] - sum[p[3]] - sum[p[6]] + sum[p[7]] >= cval ? 32 : 0) | // 2
50 (sum[p[6]] - sum[p[7]] - sum[p[10]] + sum[p[11]] >= cval ? 16 : 0) | // 5
51 (sum[p[10]] - sum[p[11]] - sum[p[14]] + sum[p[15]] >= cval ? 8 : 0) | // 8
52 (sum[p[9]] - sum[p[10]] - sum[p[13]] + sum[p[14]] >= cval ? 4 : 0) | // 7
53 (sum[p[8]] - sum[p[9]] - sum[p[12]] + sum[p[13]] >= cval ? 2 : 0) | // 6
54 (sum[p[4]] - sum[p[5]] - sum[p[8]] + sum[p[9]] >= cval ? 1 : 0)); // 3