o h]@sLddlZddlmZmZdZgdZgdZGdddZGd d d ZdS) N)Image _imagingmorphi) rr) r rrr rrr rrc@JeZdZdZdddZddZddZd 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() NcCst|dur||_ng|_d|_|dur8ddgdgddgdgddggdd}||vr1td |d |||_dSdS) N1:(... ... ...)->0z4:(00. 01. ...)->1z4:(... .0. .1.)->1z4:(... .0. ..1)->1z4:(... .1. .0.)->0z4:(... .1. ..0)->0)rz4:(.0. .1. ...)->1z4:(01. .1. ...)->1)ZcornerZ dilation4Z dilation8Zerosion4Zerosion8edgezUnknown pattern !)patternslut Exception)selfrop_nameZknown_patternsrV/var/www/html/magazine_api/magazine_env/lib/python3.10/site-packages/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[s"zLutBuilder.build_default_lutcCs|jSrrr&rrrget_lut`szLutBuilder.get_lutcs(t|dksJdfdd|DS)zstring_permute takes a pattern and a permutation and returns the string permuted according to the permutation list. c3s|]}|VqdSrr)rppatternrrr"hsz-LutBuilder._string_permute..)lenjoin)rr.Z permutationrr-r_string_permutecszLutBuilder._string_permutec Cs||fg}d|vr%|dd}tdD]}|||ddt|fqd|vrCt|}|d|D]\}}|||t|fq3d|vrqt|}|d|D]\}}|dd d dd d }dt|}|||fqQ|S) zpattern_permute takes a basic pattern and its result and clones the pattern according to the modifications described in the $options parameter. It returns a list of all cloned patterns.4rrrMN0Z1)r$appendr1ROTATION_MATRIXr/ MIRROR_MATRIXreplaceint) rZ basic_patternoptionsZ basic_resultrresrnr.rrr_pattern_permutejs$    zLutBuilder._pattern_permutec Cs8|g}|jD]:}td|dd}|std|d|d}|d}t|d}|d ddd}|||||7}q t |D]\}}|d d d d d }t |}||df||<qHt t D].}t |dd}ddt||ddd}|D]\}} ||rd dg| |j|<qqj|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]Nr6r*r3)r'rresearchr<rgroupr=rA enumeratecompiler$r%binr/matchr) rrr,r r>r.resultrZ bitpatternrrrr build_luts0       zLutBuilder.build_lut)NN) __name__ __module__ __qualname____doc__rrr'r)r1rArPrrrrr s # r c@r )MorphOpz*A class for binary morphological operatorsNcCsB||_|durt|d|_dS|durt|d|_dSdS)z&Create a binary morphological operatorN)rr)rr rP)rrrrrrrrs zMorphOp.__init__cCsZ|jdur td|jdkrtdt|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:|jdur td|jdkrtdtt|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`.NrVrWrX) rrrYrZrrMr^r_r`rrarrrrMs  z MorphOp.matchcCs |jdkr tdt|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`.rWrX)rYrZr get_on_pixelsr_r`rcrrrrds zMorphOp.get_on_pixelscCsXt|d}t||_Wdn1swYt|jtkr*d|_tddS)z!Load an operator from an mrl filerbNzWrong size operator file!)openr#readrr/r%rrfilenamefrrrload_luts zMorphOp.load_lutcCsN|jdur tdt|d}||jWddS1s wYdS)zSave an operator to an mrl fileNrVwb)rrrfwriterhrrrsave_luts  "zMorphOp.save_lutcCs ||_dS)z#Set the lut from an external sourceNr()rrrrrset_luts zMorphOp.set_lut)NNN) rQrRrSrTrr]rMrdrkrnrorrrrrUs    rU) rGr+rrr%r:r;r rUrrrrs