a
    =b                     @   s   d dl mZ d dlmZmZ d dlZd dlmZ d dl	m
Z
mZ dd Zdd	 Zd
d Zdd Zdd Zdd Zdd Zdd Zdd Zdd Zdd Zdd Zdd Zd d! ZdS )"    )testing)assert_array_equalassert_allcloseN)camera)random_noiseimg_as_floatc                  C   s,   d} t  }t|| d}t|t|| d d S )N*   )seed)r   r   r   )r	   camtest r   Clib/python3.9/site-packages/skimage/util/tests/test_random_noise.pytest_set_seed	   s    r   c                  C   s~   d} t t }d}t|| d|d}||k}t|| t|  t| |jd |jd   }d}t	|| |kszJ d S )Nr   333333?saltr	   modeamountr      {Gz?)
r   r   r   r   nponessumfloatshapeabs)r	   r
   r   	cam_noisysaltmask
proportion	tolerancer   r   r   	test_salt   s    
 r    c                  C   s6   t jdd} t| ddd}t|g dg dg d S )N      r   r   )r   r   )r   r   r   )r   randomrandr   r   )imagenoisyr   r   r   test_salt_p1    s    r'   c                  C   sD   t jdd} t| dddd}d}tt |dkd |ks@J dS )	zBEnsure images where size of a given dimension is 1 work correctly.r   i  r   皙?r   )r   r   r	   g?N)r   r#   r$   r   r   Zaverage)r%   r&   r   r   r   r   test_singleton_dim&   s    r)   c            
      C   s   d} t t }|d d }d}t|| d|d}||k}t|| t|  t| |jd |jd   }d	}t	|| |ksJ |d
k }t|| ddd}	t|	d
k | |jd |jd   }t	|| |ksJ d S )Nr          @      ?r   Zpepperr   r   r   r   )
r   r   r   r   r   zerosr   r   r   r   )
r	   r
   data_signedr   r   
peppermaskr   r   Z
orig_zerosZcam_noisy_signedr   r   r   test_pepper.   s$    
 r0   c                  C   s   d} t t }d}t|| d|dd}t||k|dk}t||k|dk}t|| t|  t|| t|  t	| |  |j
d |j
d	   }d
}t|| |ksJ d| |    k rdk sn J d S )Nr   r   zs&p      ?)r	   r   r   Zsalt_vs_pepperr+           r   r   r   g
ףp=
?gffffff?)r   r   r   r   Zlogical_andr   r   r   r-   r   r   r   )r	   r
   r   r   r   r/   r   r   r   r   r   test_salt_and_pepperI   s$    

r3   c                  C   s   d} t dd }t|| dd}d|   k r8dk s>n J t|| dd	d
}d| d   k rjdk spn J d|   k rdk sn J d S )Nr      r5         ?r   )r	   vargMb?g~jt?g333333?gQ?)r	   meanr7   gQ?g{Gz?g;On?)r   r-   r   r7   r8   )r	   datadata_gaussianr   r   r   test_gaussian`   s    "r;   c                  C   s  d} t dd }t dd }d|d ddd f< d|dd d df< d|dd dd f< t|d	| |d
d}d|d dd df    k rdk sn J d|d ddd f    k rdk sn J d|dd d df    k rdk sn J d|dd dd f    k r$dk s*n J t |}tt  t|d	| |d W d    n1 sf0    Y  |d7 }d|d< tt  t|d	| |d W d    n1 s0    Y  d S )Ni\  r4   r6   gMbP?r(   @   r1   g?ZlocalvarF)r   r	   
local_varsclipr2   gMb`?gRQ?gzG?g\(\?gRQ?g{Gz?gQ?)r   r	   r=   r,   )r   r   )r   r-   r   r7   Z
zeros_liker   raises
ValueError)r	   r9   r=   r:   Zbad_local_varsr   r   r   test_localvark   s0    ...2
&rA   c                  C   sb   d} t dd }t j| }|ddd}t |||  dd}t|d| ddd	}t|| d S )
Nr   r4   r(   g
cQ?r   r   speckleg{Gz?)r   r	   r8   r7   )r   r-   r#   default_rngZnormalr>   r   r   )r	   r9   rngZnoiseexpectedZdata_speckler   r   r   test_speckle   s    
rF   c                  C   sl   d} t  }t|d| d}t|d| dd}tj| }|t|d d }t|t|dd	 t|| d S )
Nr   poisson)r   r	   Fr   r	   r>      g      p@r2   r+   )	r   r   r   r#   rC   rG   r   r   r>   )r	   r9   r   Z
cam_noisy2rD   rE   r   r   r   test_poisson   s    rJ   c                  C   s   d} t  }t|d d }t|d| dd}t|d| dd}| dkrR| dksVJ | dkrn| dksrJ t|d| d	d}t|d| d	d}| d
kr| dksJ | dkr| dksJ d S )Nr   r*   r+   rG   TrH   r2         Fgffffff?g?r   r   r   maxmin)r	   r9   r.   Zcam_poissonZcam_poisson2r   r   r   test_clip_poisson   s    rO   c                  C   s   d} t  }t|d d }t|d| dd}t|d| dd}| dkrR| dksVJ | dkrn| dksrJ t|d| d	d}t|d| d	d}| d
kr| dk sJ | dkr| dk sJ d S )Nr   r*   r+   ZgaussianTrH   r2   rK   FgQ?gffffffֿ/$?/$rL   )r	   r9   r.   Z	cam_gaussZ
cam_gauss2r   r   r   test_clip_gaussian   s    rR   c                  C   s   d} t  }t|d d }t|d| dd}t|d| dd}| dkrR| dksVJ | dkrn| dksrJ t|d| d	d}t|d| d	d}| d
kr| dksJ | d
kr| dk sJ d S )Nr   r*   r+   rB   TrH   r2   rK   FrP   rQ   rL   )r	   r9   r.   Zcam_speckleZcam_speckle_sigr   r   r   test_clip_speckle   s    rS   c                  C   sB   t d} tt t| d W d    n1 s40    Y  d S )N)r<   r<   Zperlin)r   r-   r   r?   KeyErrorr   )r9   r   r   r   test_bad_mode   s    
rU   )Zskimage._sharedr   Zskimage._shared.testingr   r   Znumpyr   Zskimage.datar   Zskimage.utilr   r   r   r    r'   r)   r0   r3   r;   rA   rF   rJ   rO   rR   rS   rU   r   r   r   r   <module>   s$   