signals features extraction

7/24/2019 SIGNALS FEATURES EXTRACTION

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SIGNALS FEATURES EXTRACTIONSIGNALS FEATURES EXTRACTION

1. AMPLITUDE FEATURES

2. SIGNALS FIRST-ORDER AMPLITUDE HISTOGRAMFEATURES

3. SIGNALS SECOND-ORDER AMPLITUDEHISTOGRAM FEATURES

4. FOURIER TRANSFORM FEATURES

5. FOURIER DESCRIPTORS

6. SIGNALS MOMENTS FEATURES

7. TEXTURE FEATURES

8. TOPOLOGICAL ATTRIBUTES


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AMPLITUDE FEATURES

Average signal amplitude in a pixel neighborhood

where W = 2w + 1.


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AMPLITUDE FEATURES

Th !"#h$%&h%%' ()*!'*&' '+"*)"%!


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SIGNALS AMPLITUDE HISTOGRAM

FEATURES

The first-order probability distribution

where rb denotes the signals level

for 0


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SIGNALS FIRST-ORDER

HISTOGRAM FEATURES

where M is the total nuber of pi!els in aneighborhood window "entered in aroundof #$%&'( )#b' is the nuber of pi!els of

aplitude rb in the sae window


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SIGNALS FIRST-ORDER

HISTOGRAM FEATURES


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SIGNALS FIRST-ORDER

HISTOGRAM FEATURES


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SIGNALS FIRST-ORDER

HISTOGRAM FEATURES


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SIGNALS SECOND-ORDER

HISTOGRAM FEATURES

Th ,%"!) '"()&"$)"%! % "/*# */0")' +*(


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HISTOGRAM FEATURES


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HISTOGRAM FEATURES


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HISTOGRAM FEATURES


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HISTOGRAM FEATURES


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FOURIER TRANSFORM

FEATURES


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FOURIER TRANSFORM FEATURES


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FOURIER TRANSFORM


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FOURIER TRANSFORM


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FOURIER TRANSFORM


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FOURIER DESCRIPTORS

Th %/0 !)"%! /* $ 0&((' "! )&/( % ")( &*

*!' "/*#"!*& 0*&)( *(


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Geometry for curvature

definition


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GEOMETRICALGEOMETRICAL

SIGNALS MOMENTS FEATURESSIGNALS MOMENTS FEATURES


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NORMALIED UNDER DISPLACEMENTNORMALIED UNDER DISPLACEMENT

AND SCALE SMFAND SCALE SMF


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NORMALIED UNDERNORMALIED UNDER

ANGULAR ORIENTATION SMFANGULAR ORIENTATION SMF


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NORMALIED GEOMETRICAL SMFNORMALIED GEOMETRICAL SMF


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THE ALUES OF PARAMETERS

DISTORTION


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TEXTURES


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INDICATRS F DIFFERENCES


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TEXTURE MEASURE

OF EDGED SIGNAL


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AUTOCORRELATION SPREAD

MEASURES


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AUTOCORRELATION FUNCTIONS OF

TEXTURE FIELDS


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TPLGICAL ATTRI!UTES

Th circularity % *! %$,)

& A& AOO"( *&* P"( *&* POO"( 0&"/)&"( 0&"/)&


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TPLGICAL ATTRI!UTES

Th *+&*# *&* *!' 0&"/)& % %!!)' %/0%!!)(


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E "( )h E& !/$&

E 9 C : H

C- )h !/$& % %!!)' %/0%!!)(

H - )h !/$& % h%(


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TPLGICAL ATTRI!UTES

Th *+&*# %$,) !#)h *!' "')h

signals features extraction

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