3 齠h] @shddlZddlmZmZdZddddddd d d g Zd ddd ddd ddg ZGd d d ZGdddZdS)N)Image _imagingmorph c@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_patternsr0/tmp/pip-build-7iwl8md4/pillow/PIL/ImageMorph.py__init__@s  zLutBuilder.__init__cCs|j|7_dS)N)r)rrrrr add_patternsXszLutBuilder.add_patternscs.ddgdtfddttD|_dS)Nrrr c3s|]}|@dkVqdS)rNr).0i)msymbolsrr ^sz/LutBuilder.build_default_lut..) bytearrayrangeLUT_SIZEr)rr)rrrbuild_default_lut[szLutBuilder.build_default_lutcCs|jS)N)r)rrrrget_lut`szLutBuilder.get_lutcs(t|dkstdjfdd|DS)zstring_permute takes a pattern and a permutation and returns the string permuted according to the permutation list. rc3s|]}|VqdS)Nr)rp)patternrrrhsz-LutBuilder._string_permute..)lenAssertionErrorjoin)rr%Z permutationr)r%r_string_permutecszLutBuilder._string_permutec Cs||fg}d|krN|d d}x.tdD]"}|j|j|d dt|fq(Wd|krt|}x.|d|D]\}}|j|j|t|fqlWd|krt|}xN|d|D]>\}}|jddjd djdd }dt|}|j||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.4rr rMN0Z1r0)rappendr)ROTATION_MATRIXr& MIRROR_MATRIXreplaceint) rZ basic_patternoptionsZ basic_resultrresrnr%rrr_pattern_permutejs"   zLutBuilder._pattern_permutec CsL|jg}x~|jD]t}tjd|jdd}|s@td|d|jd}|jd}t|jd}|jd djdd}||j|||7}qWxFt |D]:\}}|d jd d jd d }tj |}||df||<qWxpt t D]d}t |dd}ddt||ddd}x0|D](\}} |j|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) r#zSyntax error in pattern ""rr r r.Xz[01]Nr-rr0)r!rresearchr4rgroupr5r9 enumeratecompilerr binr&matchr) rrr$rr6r%resultrZ bitpatternrrrr build_luts,     zLutBuilder.build_lut)NN) __name__ __module__ __qualname____doc__rrr!r"r)r9rHrrrrr s" r c@sJeZdZdZdddZddZddZd d Zd d Zd dZ ddZ dS)MorphOpz*A class for binary morphological operatorsNcCs<||_|dk r t|dj|_n|dk r8t|dj|_dS)z&Create a binary morphological operatorN)r)r)rr rH)rrrrrrrrs zMorphOp.__init__cCsZ|jdkrtd|jdkr$tdtj|j|jd}tjt |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 loadedLzImage mode must be L) rrmode ValueErrorrnewsizerapplybytesimid)rimageZoutimagecountrrrrSs  z MorphOp.applycCs:|jdkrtd|jdkr$tdtjt|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 loadedrNzImage mode must be L) rrrOrPrrErTrUrV)rrWrrrrEs   z MorphOp.matchcCs |jdkrtdtj|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`.rNzImage mode must be L)rOrPr get_on_pixelsrUrV)rrWrrrrYs zMorphOp.get_on_pixelsc CsDt|d}t|j|_WdQRXt|jtkr@d|_tddS)z!Load an operator from an mrl filerbNzWrong size operator file!)openrreadrr&r r)rfilenamefrrrload_luts  zMorphOp.load_lutc Cs8|jdkrtdt|d}|j|jWdQRXdS)zSave an operator to an mrl fileNzNo operator loadedwb)rrr[write)rr]r^rrrsave_luts  zMorphOp.save_lutcCs ||_dS)z#Set the lut from an external sourceN)r)rrrrrset_lutszMorphOp.set_lut)NNN) rIrJrKrLrrSrErYr_rbrcrrrrrMs    rMi) r?r#rrr r2r3r rMrrrrs