B 0\O @sLddlmZddlmZmZddlZdZGdddeZGdd d eZ dS) )print_function)Image _imagingmorphNic@sJeZdZdZdddZddZddZd d Zd d Zd dZ ddZ dS) LutBuildera~A 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_patternsr -lib/python3.7/site-packages/PIL/ImageMorph.py__init__3s& zLutBuilder.__init__cCs|j|7_dS)N)r)r rr r r add_patternsLszLutBuilder.add_patternscs.ddgdtfddttD|_dS)Nrrc3s|]}|@dkVqdS)rNr ).0i)msymbolsr r Rsz/LutBuilder.build_default_lut..) bytearrayrangeLUT_SIZEr )r r )rrrbuild_default_lutOszLutBuilder.build_default_lutcCs|jS)N)r )r r r rget_lutTszLutBuilder.get_lutcs(t|dkstdfdd|DS)zstring_permute takes a pattern and a permutation and returns the string permuted according to the permutation list. c3s|]}|VqdS)Nr )rp)patternr rr\sz-LutBuilder._string_permute..)lenAssertionErrorjoin)r rZ permutationr )rr_string_permuteWszLutBuilder._string_permutec Cs||fg}d|kr`|dd}x@tdD]4}|||ddddddddd d d g |fq(Wd |krt|}x@|d|D]0\}}|||d ddd ddd ddg |fq~Wd |krt|}xN|d|D]>\}}|dddddd}dt|}|||fqW|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.4rrMN0Z1)rappendr#r replaceint) r Z basic_patternoptionsZ basic_resultrZresrnrr r r_pattern_permute^s2     zLutBuilder._pattern_permutec CsL|g}x~|jD]t}td|dd}|s@td|d|d}|d}t|d}|d ddd}|||||7}qWxFt |D]:\}}|d d d d d }t |}||df||<qWxpt t D]d}t |dd}ddt||ddd}x0|D](\}} ||rd dg| |j|<qWqW|jS)zlCompile all patterns into a morphology lut. TBD :Build based on (file) morphlut:modify_lut z(\w*):?\s*\((.+?)\)\s*->\s*(\d) rzSyntax error in pattern ""rr,r( r.Xz[01]Nr/rr%)rrresearchr3r groupr4r7 enumeratecompilerrbinr matchr ) r rrrr5rresultrZ bitpatternrr r r build_luts.     zLutBuilder.build_lut)NN) __name__ __module__ __qualname____doc__rrrrr#r7rFr r r rrs" %rc@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)r )r)r rrF)r r r rr r rrs zMorphOp.__init__cCsZ|jdkrtd|jdkr$tdt|j|jd}tt|j|j j |j j }||fS)zRun a single morphological operation on an image Returns a tuple of the number of changed pixels and the morphed imageNzNo operator loadedLz0Image must be binary, meaning it must use mode L) r r modernewsizerapplybytesimid)r imageZoutimagecountr r rrPs  z MorphOp.applycCs:|jdkrtd|jdkr$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`.NzNo operator loadedrLz0Image must be binary, meaning it must use mode L)r r rMrrCrQrRrS)r rTr r rrCs   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`.rLz0Image must be binary, meaning it must use mode L)rMr r get_on_pixelsrRrS)r rTr r rrVs zMorphOp.get_on_pixelsc CsDt|d}t||_WdQRXt|jtkr@d|_tddS)z!Load an operator from an mrl filerbNzWrong size operator file!)openrreadr r rr )r filenamefr r rload_luts  zMorphOp.load_lutc Cs8|jdkrtdt|d}||jWdQRXdS)zSave an operator to an mrl fileNzNo operator loadedwb)r r rXwrite)r rZr[r r rsave_luts  zMorphOp.save_lutcCs ||_dS)z#Set the lut from an external sourceN)r )r r r r rset_lutszMorphOp.set_lut)NNN) rGrHrIrJrrPrCrVr\r_r`r r r rrKs    rK) Z __future__rrrrr=robjectrrKr r r rs