U ॡc[ @shddlZddlmZmZdZddddddd d d g Zd ddd ddd ddg ZGd d d ZGdddZdS)N)Image _imagingmorphic@sJeZdZdZdddZddZddZd d Zd d Zd dZ ddZ dS) LutBuilderaTA class for building a MorphLut from a descriptive language The input patterns is a list of a strings sequences like these:: 4:(... .1. 111)->1 (whitespaces including linebreaks are ignored). The option 4 describes a series of symmetry operations (in this case a 4-rotation), the pattern is described by: - . or X - Ignore - 1 - Pixel is on - 0 - Pixel is off The result of the operation is described after "->" string. The default is to return the current pixel value, which is returned if no other match is found. Operations: - 4 - 4 way rotation - N - Negate - 1 - Dummy op for no other operation (an op must always be given) - M - Mirroring Example:: lb = LutBuilder(patterns = ["4:(... .1. 111)->1"]) lut = lb.build_lut() NcCsr|dk r||_ng|_d|_|dk rnddgdgddgdgddgdddgd }||krdtd |d |||_dS) Nz1:(... ... ...)->0z4:(00. 01. ...)->1z4:(... .0. .1.)->1z4:(... .0. ..1)->1z4:(... .1. .0.)->0z4:(... .1. ..0)->0z4:(.0. .1. ...)->1z4:(01. .1. ...)->1)ZcornerZ dilation4Z dilation8Zerosion4Zerosion8ZedgezUnknown pattern !)patternslut Exception)selfrop_nameZknown_patternsr2/tmp/pip-unpacked-wheel-h_ukwjmx/PIL/ImageMorph.py__init__@s$ zLutBuilder.__init__cCs|j|7_dSNr)rrrrr add_patternsXszLutBuilder.add_patternscs.ddgdtfddttD|_dS)Nrrc3s|]}|@dkVqdS)rNr).0imsymbolsrr ^sz/LutBuilder.build_default_lut..) bytearrayrangeLUT_SIZErrrrrbuild_default_lut[szLutBuilder.build_default_lutcCs|jSrrr#rrrget_lut`szLutBuilder.get_lutcs(t|dkstdfdd|DS)zstring_permute takes a pattern and a permutation and returns the string permuted according to the permutation list. c3s|]}|VqdSrr)rppatternrrrhsz-LutBuilder._string_permute..)lenAssertionErrorjoin)rr+Z permutationrr*r_string_permutecszLutBuilder._string_permutec Cs||fg}d|krJ|dd}tdD]"}|||ddt|fq&d|krt|}|d|D]\}}|||t|fqfd|krt|}|d|D]>\}}|d d d d d d }dt|}|||fq|S) zpattern_permute takes a basic pattern and its result and clones the pattern according to the modifications described in the $options parameter. It returns a list of all cloned patterns.4rrrMNN0Z1)r!appendr/ROTATION_MATRIXr, MIRROR_MATRIXreplaceint) rZ basic_patternoptionsZ basic_resultrresrnr+rrr_pattern_permutejs$    zLutBuilder._pattern_permutec Cs<|g}|jD]t}td|dd}|s>td|d|d}|d}t|d}|d ddd}|||||7}qt |D]:\}}|d d d d d }t |}||df||<qt t D]`}t |dd}ddt||ddd}|D](\}} ||r d dg| |j|<q q|jS)zlCompile all patterns into a morphology lut. TBD :Build based on (file) morphlut:modify_lut z(\w*):?\s*\((.+?)\)\s*->\s*(\d) r(zSyntax error in pattern ""rr r r.Xz[01]Nr4r'r1)r$rresearchr:rgroupr;r? enumeratecompiler!r"binr,matchr) rrr)rr<r+resultrZ bitpatternrrrr build_luts,       zLutBuilder.build_lut)NN) __name__ __module__ __qualname____doc__rrr$r&r/r?rNrrrrr s# r c@sJeZdZdZdddZddZddZd d Zd d Zd dZ ddZ dS)MorphOpz*A class for binary morphological operatorsNcCs<||_|dk r t|d|_n|dk r8t|d|_dS)z&Create a binary morphological operatorN)rr)rr rN)rrrrrrrrs zMorphOp.__init__cCsZ|jdkrtd|jdkr$tdt|j|jd}tt |j|j j |j j }||fS)zRun a single morphological operation on an image Returns a tuple of the number of changed pixels and the morphed imageNNo operator loadedLImage mode must be L) rrmode ValueErrorrnewsizerapplybytesimid)rimageZoutimagecountrrrr[s  z MorphOp.applycCs:|jdkrtd|jdkr$tdtt|j|jjS)zGet a list of coordinates matching the morphological operation on an image. Returns a list of tuples of (x,y) coordinates of all matching pixels. See :ref:`coordinate-system`.NrTrUrV) rrrWrXrrKr\r]r^rr_rrrrKs   z MorphOp.matchcCs |jdkrtdt|jjS)zGet a list of all turned on pixels in a binary image Returns a list of tuples of (x,y) coordinates of all matching pixels. See :ref:`coordinate-system`.rUrV)rWrXr get_on_pixelsr]r^rarrrrbs zMorphOp.get_on_pixelsc CsDt|d}t||_W5QRXt|jtkr@d|_tddS)z!Load an operator from an mrl filerbNzWrong size operator file!)openr readrr,r"rrfilenamefrrrload_luts  zMorphOp.load_lutc Cs8|jdkrtdt|d}||jW5QRXdS)zSave an operator to an mrl fileNrTwb)rrrdwriterfrrrsave_luts  zMorphOp.save_lutcCs ||_dS)z#Set the lut from an external sourceNr%)rrrrrset_lutszMorphOp.set_lut)NNN) rOrPrQrRrr[rKrbrirlrmrrrrrSs    rS) rEr(rrr"r8r9r rSrrrrs2