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d g Zd dd d
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ddd ddg ZG d d d ZG dd dZdS )é Né )ÚImageÚ _imagingmorphi é é é é é é é c @ sJ e Zd ZdZdddZdd Zdd Zd d
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dS )Ú
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LutBuilderaT A class for building a MorphLut from a descriptive language
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The input patterns is a list of a strings sequences like these::
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4:(...
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.1.
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111)->1
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(whitespaces including linebreaks are ignored). The option 4
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describes a series of symmetry operations (in this case a
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4-rotation), the pattern is described by:
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- . or X - Ignore
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- 1 - Pixel is on
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- 0 - Pixel is off
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The result of the operation is described after "->" string.
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The default is to return the current pixel value, which is
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returned if no other match is found.
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Operations:
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- 4 - 4 way rotation
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- N - Negate
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- 1 - Dummy op for no other operation (an op must always be given)
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- M - Mirroring
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Example::
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lb = LutBuilder(patterns = ["4:(... .1. 111)->1"])
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lut = lb.build_lut()
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Nc C sv |d k r|| _ ng | _ d | _|d k rrddgdgddgdgddgdddgd }||krhd
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| d }t||| | _ d S ) 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 ú!)ÚpatternsÚlutÚ Exception)Úselfr Úop_nameZknown_patternsÚmsg© r úEd:\z\workplace\vscode\pyvenv\venv\Lib\site-packages\PIL/ImageMorph.pyÚ__init__@ s& ýú zLutBuilder.__init__c C s | j |7 _ d S ©N©r )r r r r r Ú add_patternsY s zLutBuilder.add_patternsc s. ddgd t fddttD | _d S )Nr r é c 3 s | ]}| @ d k V qdS )r Nr )Ú.0Úi©ÚmÚsymbolsr r Ú <genexpr>_ s z/LutBuilder.build_default_lut.<locals>.<genexpr>)Ú bytearrayÚrangeÚLUT_SIZEr ©r r r r Úbuild_default_lut\ s z LutBuilder.build_default_lutc C s | j S r ©r r$ r r r Úget_luta s zLutBuilder.get_lutc s( t |dkstd fdd|D ¡S )zstring_permute takes a pattern and a permutation and returns the
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string permuted according to the permutation list.
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é Ú c 3 s | ]} | V qd S r r )r Úp©Úpatternr r r i s z-LutBuilder._string_permute.<locals>.<genexpr>)ÚlenÚAssertionErrorÚjoin)r r, Z permutationr r+ r Ú_string_permuted s zLutBuilder._string_permutec C sæ ||fg}d|krJ|d d }t dD ]"}| | |d d t¡|f¡ q&d|krt|}|d|
D ] \}}| | |t¡|f¡ qfd|krât|}|d|
D ]>\}}| d d
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¡ d d ¡ d
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d ¡}dt| }| ||f¡ q¢|S ) zÉpattern_permute takes a basic pattern and its result and clones
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the pattern according to the modifications described in the $options
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parameter. It returns a list of all cloned patterns.Ú4éÿÿÿÿr r r ÚMNÚNÚ0ÚZÚ1)r" Úappendr0 ÚROTATION_MATRIXr- Ú MIRROR_MATRIXÚreplaceÚint) r Z basic_patternÚoptionsZ basic_resultr Úresr Únr, r r r Ú_pattern_permutek s$
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ÿ zLutBuilder._pattern_permutec C s@ | ¡ g }| jD ]x}t d| dd¡¡}|sBd| d }t|| d¡}| d¡}t| d¡}| d d¡ dd¡}|| |||¡7 }qt |D ]:\}}|d
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d d ¡ d d ¡}t
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} |D ](\}}
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| j|< qqØ| jS )zlCompile all patterns into a morphology lut.
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TBD :Build based on (file) morphlut:modify_lut
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z (\w*):?\s*\((.+?)\)\s*->\s*(\d)Ú
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r) zSyntax error in pattern "ú"r r r ú r Ú.ÚXz[01]Nr5 r( r2 )r% r ÚreÚsearchr; r Úgroupr< r@ Ú enumerateÚcompiler" r# Úbinr- Úmatchr ) r r r* r r r= r, Úresultr Z
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bitpatternÚrr r r Ú build_lut s.
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zLutBuilder.build_lut)NN) Ú__name__Ú
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__module__Ú __qualname__Ú__doc__r r r% r' r0 r@ rO r r r r r s #
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r c @ sJ e Zd ZdZdddZdd Zdd Zd d
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Zd d Zd d Z dd Z
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dS )ÚMorphOpz*A class for binary morphological operatorsNc C s< || _ |dk r t|d ¡ | _ n|dk r8t|d ¡ | _ dS )z&Create a binary morphological operatorN)r r )r r rO )r r r r r r r r ¸ s
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zMorphOp.__init__c C sb | j dkrd}t||jdkr,d}t|t |j|jd¡}t t | j |j
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j |j
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j ¡}||fS )zRun a single morphological operation on an image
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Returns a tuple of the number of changed pixels and the
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morphed imageNúNo operator loadedÚLúImage mode must be L) r r ÚmodeÚ
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ValueErrorr ÚnewÚsizer ÚapplyÚbytesÚimÚid)r Úimager ZoutimageÚcountr r r r\ À s
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z MorphOp.applyc C sB | j dkrd}t||jdkr,d}t|t t| j |jj¡S )zÈGet a list of coordinates matching the morphological operation on
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an image.
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Returns a list of tuples of (x,y) coordinates
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of all matching pixels. See :ref:`coordinate-system`.NrU rV rW ) r r rX rY r rL r] r^ r_ ©r r` r r r r rL Ð s
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z MorphOp.matchc C s$ |j dkrd}t|t |jj¡S )z©Get a list of all turned on pixels in a binary image
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Returns a list of tuples of (x,y) coordinates
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of all matching pixels. See :ref:`coordinate-system`.rV rW )rX rY r Ú get_on_pixelsr^ r_ rb r r r rc ß s
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zMorphOp.get_on_pixelsc C sH t |d}t| ¡ | _W 5 Q R X t| jtkrDd| _d}t|dS )z!Load an operator from an mrl fileÚrbNzWrong size operator file!)Úopenr! Úreadr r- r# r )r ÚfilenameÚfr r r r Úload_lutê s zMorphOp.load_lutc C s< | j dkrd}t|t|d}| | j ¡ W 5 Q R X dS )z Save an operator to an mrl fileNrU Úwb)r r re Úwrite)r rg r rh r r r Úsave_lutô s
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zMorphOp.save_lutc C s
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|| _ dS )z#Set the lut from an external sourceNr& )r r r r r Úset_lutü s zMorphOp.set_lut)NNN) rP rQ rR rS r r\ rL rc ri rl rm r r r r rT µ s
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rT ) rF r) r r r# r9 r: r rT r r r r Ú<module> s2 ý ý
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