lmrcImageFeatureExtraction(API)

DataManip/mrcImage/src/lmrcImageFeatureExtractionは特徴量の算出のためのAPI で、mrcImageFeatureExtractionにて使用しています。

構造体

typedef struct lmrcImageFeatureExtractionInfo {
	int co_r;
	int co_theta;
	int rl_theta;
	int rl_dev;
	int mode;
}lmrcImageFeatureExtractionInfo;

API

特徴量の算出

メイン

extern void lmrcImageFeatureExtraction(mrcImage* in, mrcImage* out, lmrcImageFeatureExtractionInfo info, int mode);

ヒストグラム

extern void lmrcImageFeatureExtraction_densityHist(mrcImage* in, double* out, int mode);

outに各特徴量が格納されます。

out[0]	平均値
out[1]	分散
out[2]	歪度
out[3]	尖度
out[4]	コントラスト
out[5]	エネルギー
out[6]	エントロピー

共起行列を用いた特徴量の算出

extern void lmrcImageFeatureExtractionCoOccurrence(mrcImage* in, double* out, lmrcImageFeatureExtractionInfo info, int mode); 

outに各特徴量が格納されます。

out[0]	角度別２次モーメント
out[1]	コントラスト
out[2]	相関値
out[3]	二乗和分散
out[4]	逆差分モーメント
out[5]	sum average
out[6]	sum variance
out[7]	sum entropy
out[8]	エントロピー
out[9]	difference variance
out[10]	difference entropy
out[11]	information measure of correlation 1
out[12]	information measure of correlation 2
out[13]	maximal correlation coefficient

ランレングス圧縮

extern void lmrcImageFeatureExtractionRunLength(mrcImage* in, double* out, lmrcImageFeatureExtractionInfo info, int         mode);

outに各特徴量が格納されます。

out[0]	short runs emphasis
out[1]	long runs emphasis
out[2]	gray level nonuniformity
out[3]	run length nonuniformity
out[4]	run percentage