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Filename :
ImageStat.cpython-310.pyc
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o Z#�a= � @ s. d dl Z d dlZd dlZG dd� d�ZeZdS )� Nc @ sf e Zd Zddd�Zdd� Zdd� Zdd � Zd d � Zd d � Zdd� Z dd� Z dd� Z dd� Z dd� Z dS )�StatNc C sj z|r |� |�| _n|� � | _W n ty || _Y nw t| jt�s'td��ttt| j�d ��| _d S )Nz$first argument must be image or list� ) � histogram�h�AttributeError� isinstance�list� TypeError�range�len�bands)�self� image_or_list�mask� r �//usr/lib/python3/dist-packages/PIL/ImageStat.py�__init__ s � � z Stat.__init__c C s8 |dd� dkr t |��t| d| �� }t| ||� |S )zCalculate missing attributeN� �_get)r �getattr�setattr)r �id�vr r r � __getattr__* s zStat.__getattr__c C s@ dd� }g }t dt| j�d�D ]}|�|| j|d� �� q|S )z-Get min/max values for each band in the imagec S s: d}d}t d�D ]}| | rt||�}t||�}q||fS )N� r r )r �min�max)r �n�x�ir r r �minmax6 s �z Stat._getextrema.<locals>.minmaxr r N�r r r �append)r r r r r r r � _getextrema3 s zStat._getextremac C sB g }t dt| j�d�D ]}|�t�tj| j||d � �� q |S )z(Get total number of pixels in each layerr r )r r r r" � functools�reduce�operator�add�r r r r r r � _getcountD s $zStat._getcountc C sR g }t dt| j�d�D ]}d}t d�D ] }||| j|| 7 }q|�|� q |S )z#Get sum of all pixels in each layerr r � r! )r r r �layerSum�jr r r �_getsumL s z Stat._getsumc C sZ g }t dt| j�d�D ] }d}t d�D ]}||d t| j|| � 7 }q|�|� q |S )z+Get squared sum of all pixels in each layerr r r* � )r r r �floatr" )r r r �sum2r, r r r �_getsum2W s z Stat._getsum2c C s. g }| j D ]}|�| j| | j| � q|S )z&Get average pixel level for each layer)r r" �sum�countr( r r r �_getmeanb s z Stat._getmeanc C sd g }| j D ]*}d}| j| d }|d }td�D ]}|| j|| }||kr) nq|�|� q|S )z%Get median pixel level for each layerr r. r )r r3 r r r" )r r r �s�half�br, r r r � _getmedianj s � zStat._getmedianc C s4 g }| j D ]}|�t�| j| | j| �� q|S )zGet RMS for each layer)r r" �math�sqrtr0 r3 r( r r r �_getrmsy s "z Stat._getrmsc C sD g }| j D ]}| j| }|�| j| | j| d | | � q|S )zGet variance for each layerg @)r r3 r" r0 r2 )r r r r r r r �_getvar� s (z Stat._getvarc C s* g }| j D ] }|�t�| j| �� q|S )z%Get standard deviation for each layer)r r" r9 r: �varr( r r r � _getstddev� s zStat._getstddev)N)�__name__� __module__� __qualname__r r r# r) r- r1 r4 r8 r; r< r> r r r r r s r )r$ r9 r& r �Globalr r r r �<module> s v