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s Get image or feature statisticsc C s˜ y0 | o | i | ƒ | _ n | i ƒ | _ Wn t j
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t d ‚ n t t | i ƒ d ƒ | _ d S( Ns$ first argument must be image or listi ( t histogramt ht AttributeErrort typet TypeErrort ranget lent bands( t selft
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t | ‚ n t | d | ƒ ƒ } t | | | ƒ | S( s Calculate missing attributei t _get( R t getattrt setattr( R t idt v( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt __getattr__; s
c C sS d „ } g } x= t d t | i ƒ d ƒ D] } | i | | i | ƒ ƒ q+ W| S( s- Get min/max values for each band in the imagec S sZ d } d } xA t d ƒ D]3 } | | o" t | | ƒ } t | | ƒ } q q W| | f S( Niÿ i i ( R t mint max( R t nt xt i( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt minmaxG s
i i ( R R R t append( R R R R ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt _getextremaD s c C sW g } xJ t d t | i ƒ d ƒ D]- } | i t t i | i | | d !ƒ ƒ q" W| S( s( Get total number of pixels in each layeri i ( R R R R t reducet operatort add( R R R ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt _getcountU s
+c C ss g } xf t d t | i ƒ d ƒ D]I } d } x- t d ƒ D] } | | | i | | } q; W| i | ƒ q" W| S( s# Get sum of all pixels in each layeri i g ( R R R R ( R R R t sumt j( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt _getsum] s
c C s} g } xp t d t | i ƒ d ƒ D]S } d } x7 t d ƒ D]) } | | d t | i | | ƒ } q; W| i | ƒ q" W| S( s+ Get squared sum of all pixels in each layeri i g i ( R R R t floatR ( R R R t sum2R ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt _getsum2h s
'c C s= g } x0 | i D]% } | i | i | | i | ƒ q W| S( s& Get average pixel level for each layer( R R R t count( R R R ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt _getmeans s
#c C sŠ g } x} | i D]r } d } | i | d } | d } x; t d ƒ D]- } | | i | | } | | j o PqD qD W| i | ƒ q W| S( s% Get median pixel level for each layeri i i ( R R% R R R ( R R R t st lt bR ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt
_getmedian{ s
c C sF g } x9 | i D]. } | i t i | i | | i | ƒ ƒ q W| S( s Get RMS for each layer( R R t matht sqrtR# R% ( R R R ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt _getrmsŠ s
,c C sV g } xI | i D]> } | i | } | i | i | | i | d | | ƒ q W| S( s Get variance for each layerg @( R R% R R# R ( R R R R ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt _getvar“ s
/c C s; g } x. | i D]# } | i t i | i | ƒ ƒ q W| S( s% Get standard deviation for each layer( R R R+ R, t var( R R R ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt
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__module__t __doc__t NoneR R R R R! R$ R& R* R- R. R0 ( ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyR % s t __main__s Images/lena.ppmt extremas sum s mean s median s rms s sum2 s var s stddev ( ( t ImageR R+ R t GlobalR1 t opent imt stR6 R t meant mediant rmsR# R/ t stddev( ( ( s1 /usr/lib/python2.6/site-packages/PIL/ImageStat.pyt <module> s