o Z#a]@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)corner dilation4 dilation8erosion4erosion8edgezUnknown pattern !)patternslut Exception)selfrop_nameknown_patternsr0/usr/lib/python3/dist-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_SIZErrrr%rbuild_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)r#ppatternrrr(hsz-LutBuilder._string_permute..)lenjoin)rr4 permutationrr3r_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 $options parameter. It returns a list of all cloned patterns.4rrrMN0Z1)r*appendr8ROTATION_MATRIXr5 MIRROR_MATRIXreplaceint) r basic_patternoptions basic_resultrresr$nr4rrr_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) r1zSyntax error in pattern ""rr r r.Xz[01]Nr=r0r:)r-rresearchrCrgrouprDrJ enumeratecompiler*r+binr5matchr) rrr2r&rFr4resultr$ bitpatternrrrr build_luts0       zLutBuilder.build_lut)NN) __name__ __module__ __qualname____doc__rr!r-r/r8rJrZrrrrr 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 rZ)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)rimageoutimagecountrrrrgs  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`.Nr`rarb) rrrcrdrrVrhrirjrrkrrrrVs  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`.rarb)rcrdr get_on_pixelsrirjrnrrrros zMorphOp.get_on_pixelscCsXt|d}t||_Wdn1swYt|jtkr*d|_tddS)z!Load an operator from an mrl filerbNzWrong size operator file!)openr)readrr5r+rrfilenamefrrrload_luts zMorphOp.load_lutcCsN|jdur tdt|d}||jWddS1s wYdS)zSave an operator to an mrl fileNr`wb)rrrqwritersrrrsave_luts  "zMorphOp.save_lutcCs ||_dS)z#Set the lut from an external sourceNr.)rrrrrset_luts zMorphOp.set_lut)NNN) r[r\r]r^rrgrVrorvryrzrrrrr_s    r_) rPr1rrr+rArBr r_rrrrs