o
    :ήc%H                  
   @   s  d dl Z d dlZd dlZd dlmZ d dlmZ d dlm	Z	 d dl
mZmZ d dlmZ d dlmZmZmZmZ e ddddddf Zeed	d
ddddZd^ddZdd Zdd Zdd Zejdddgejdddgejdejejejejegejdddgdd Z ejddd gejddgejdejejejegejdddgd!d" Z!d#d$ Z"d%d&gZ#d d'gZ$ddgZ%ejd(e &e#e$e%d)d* Z'd+d, Z(g d-Z)d.d/gZ*e+e &e*e)Z,e,-d0 ejd1e,d2d3 Z.d4d5 Z/d6d7 Z0g d8Z1d9d: Z2ejd;e2e1d<d= Z3d>d? Z4d@dA Z5dBdC Z6dDdE Z7ejdFdGdHdI Z8dJdK Z9dLZ:dMZ;de<e:d  e=e:d  dNfZ>ejdOe &e:e;e>dPdQ Z?dRdS Z@e	 dTdU ZAejdddgdVdW ZBdXdY ZCejdejejgdZd[ ZDd\d] ZEdS )_    N)has_mpl)expected_warnings)test_parallel)_supported_float_typeconvert_to_float)shepp_logan_phantom)radoniradoniradon_sartrescale         ?   constantF)ordermodeanti_aliasingchannel_axisc                 C   s   ddl m} tddd}|d u r|jdd d}n|jd	d d
}||d  |j|fddi| ||d  |j| fi | ||d  |j|f|  |  d| ||d  |j||  fi | |  |	  d S )Nr   pyplotgraynearestcmapinterpolation)      )figsize   )   r      aspectautor   r   )vminvmax   )

matplotlibr   dictfiguresubplotimshowminmaxcolorbarshow)originalresultsinogrampltimkwargssp r5   S/tmp/pip-target-vg8gfxp4/lib/python/skimage/transform/tests/test_radon_transform.py_debug_plot   s"    r7   c                 C   s&   |  t} | |  8 } | |   } | S N)astypefloatr+   r,   )xr5   r5   r6   _rescale_intensity(   s   
r<   c                  C   s   d} t |  d | d d }t ||\}}|d |d  | d d k}t jddt|jdd}t||d	}t||d	}|| }d
}	t t 	|}
|
|	k sQJ dS )zN
    test that a uniform circular phantom has a small reconstruction bias
       r   r                   f@Fendpointthetag-C6
?N)
nparangemeshgridlinspacer,   shaper   r	   absmean)pixelsxyr;   yimagerD   r1   reconstruction_fbperrortolroi_errr5   r5   r6   !test_iradon_bias_circular_phantom/   s   rT   c                 C   s   t j| |d}d|| d d | d d f< t jddt| dd	}t||||d
}|jt|jks2J t j|dd}t| t 	|dk sFJ d S )Ndtype      ?r   r   r   r?   r@   FrA   )rD   circlepreserve_rangeaxisgư>)
rE   zerosrH   r,   r   rV   r   argmaxprintstd)rI   rX   rV   rY   rO   rD   r1   sinogram_maxr5   r5   r6   check_radon_centerC   s   ra   rI   )   rb   )   rc   rX   TrV   rY   c                 C      t | ||| d S r8   ra   rI   rX   rV   rY   r5   r5   r6   test_radon_centerR   s   rg   )    rb   )!   rc   c                 C   rd   r8   re   rf   r5   r5   r6   test_radon_center_rectangular\   s   rj   c                 C   s  d}|rt j| dftd}d|| d df< n tt t d|  }t j|dftd}d||jd d df< t t ||j}t	d|j t	d| t
||g|d	}t
||d
 g|d	}t	dt t || d  |rtrdd lm}	 tddd}
|	  |	d |	j|fi |
 |	d |	j|| fi |
 |	d |	j|fi |
 |	d |	j|fi |
 |	  t ||sJ d S )NFr   rU   rW   r   r   zshape of generated sinogramzmaximum in generated sinogramrD   rX      zrms deviance:r   r   r   r             )rE   r\   r:   intceilsqrtrI   unravel_indexr]   r^   r	   rK   r   matplotlib.pyplotr   r'   r(   r)   r*   r.   allclose)sizerD   rX   debugr1   diagonalmaxpointreconstructionreconstruction_oppositer2   r3   r5   r5   r6   check_iradon_centerd   s>   




r|   rb   rc   Z   zsize, theta, circlec                 C   s   t | || d S r8   )r|   )rv   rD   rX   r5   r5   r6   test_iradon_center   s   r~   c                 C   s   d}t }tt|dd|| dd}tt|| }td| |r(tr(t|| |dv r6| dkr3d}nd}nd	}||k s>J d S )
NFrX   )filter_namer   rX   z
	mean error:)rampshepp-loganr   Q?g?g?)	PHANTOMr	   r   rE   rK   rJ   r^   r   r7   )interpolation_typefilter_typerw   rO   reconstructeddeltaallowed_deltar5   r5   r6   check_radon_iradon   s   

r   )r   r   cosinehamminghannlinearr   )cubicr   zinterpolation_type, filter_typec                 C      t | | d S r8   )r   )r   r   r5   r5   r6   test_radon_iradon   s   r   c            
      C   s   d} t | t | ddd  }d}t jdd|dd}t||dd	}t|dd
}t tt|t| }|dk s<J d}t||dd	}|jdd}t j	||d ddsWJ t|dd
}t t|t 
| |t 
|  }	|	|ksvJ dS )z3
    Test with different number of projections
    d   N   r   rl   FrA   rk   r   r   P   rZ   {Gz?)rtol)rE   trirH   r   r	   rK   rJ   r<   sumru   r,   )
rv   rO   	nb_anglesrD   radon_image_200r   	delta_200radon_image_80sdelta_80r5   r5   r6   test_iradon_angles   s&   r   c                 C   s   d}t d}t j| td}d||< t||dd}t||dd}tdt t ||  |r7t	r7t
||| | dkrSt t ||jt t ||jksUJ d S d S )NFrl   rU   rW   r   z
	Maximum deviation:r   )rE   rF   r\   r:   r   r	   r^   r,   rJ   r   r7   r   rs   r]   rI   )rI   slicesrw   rD   rO   r1   r   r5   r5   r6   check_radon_iradon_minimal   s   
r   )r%   r%   )r>   r>   )   r   c                    s.   dd   fddt jfdd| D S )Nc                 S   sF   | d d | d d }}t |d ||d f|d ||d f}|S )Nr   r   r   	itertoolsproduct)rI   c0c1coordinatesr5   r5   r6   shape2coordinates   s
   zFgenerate_test_data_for_radon_iradon_minimal.<locals>.shape2coordinatesc                    s   t | g | S r8   r   )rI   )r   r5   r6   shape2shapeandcoordinates   s   zNgenerate_test_data_for_radon_iradon_minimal.<locals>.shape2shapeandcoordinatesc                    s   g | ]} |qS r5   r5   ).0rI   )r   r5   r6   
<listcomp>   s    z?generate_test_data_for_radon_iradon_minimal.<locals>.<listcomp>)r   chainfrom_iterable)shapesr5   )r   r   r6   +generate_test_data_for_radon_iradon_minimal   s
   r   zshape, coordinatec                 C   r   r8   )r   )rI   
coordinater5   r5   r6   test_radon_iradon_minimal   s   r   c                  C   sn   t d} t| g ddd}t|g ddd tt t|g dd W d    d S 1 s0w   Y  d S )Nr   )r   r   r   Frk   )r   r   r   r%   rC   )rE   r\   r   r	   pytestraises
ValueError)apr5   r5   r6   "test_reconstruct_with_wrong_angles   s   
"r   c                 C   s   t jd t jj|  }t jd| d d| d f \}}t || d d  d || d d  d  }t| d }d|||k< |S )Ni"r   r   r   r?   )rE   randomseedrandogridrr   r+   )rI   rO   r   r   rradiusr5   r5   r6   _random_circle  s   ".r   c                  C   s^  t d} tdg t| dd W d    n1 sw   Y  d}t jd|d d|d f \}}t ||d d  d ||d d  d  }t|d }t || dt j}t	|}t j
dd	t|d
d}t||dd}t |jdddk s}J t|}t||dd}|jdd}	|	 }
t |	|
 |
 }t| |  t |dk sJ d S )N)
   r   zreconstruction circleTr   =   O   r   r   r   rl   FrA   rk   rZ   r   g-C6j?)rE   onesr   r   r   rr   r+   clipinfr<   rH   allr_   r   r   rK   rJ   r^   r,   )r   rI   r   r   r   r   rO   anglesr1   massaverage_massrelative_errorr5   r5   r6   test_radon_circle  s(   
".r   c           	      C   s   ddl m} t| | f}tdd| d}t||dd}dd	 }td
|| t||dd}td|| ||}td|| t|| }tt|t	| ||||ksZJ d S )Nr   )_sinogram_circle_to_squarer?   r@   FTr   c                 S   s   t t | | jS r8   )rE   rs   r]   rI   )r   r5   r5   r6   argmax_shape2  s   z5check_sinogram_circle_to_square.<locals>.argmax_shapez
	argmax of circle:z	argmax of square:z	argmax of circle to square:)
!skimage.transform.radon_transformr   r   rE   rH   r   r^   rJ   rK   r,   )	rv   r   rO   rD   sinogram_circler   sinogram_squaresinogram_circle_to_squarerQ   r5   r5   r6   check_sinogram_circle_to_square,  s"   r   rv   )2   3   c                 C   s   t |  d S r8   )r   )rv   r5   r5   r6   test_sinogram_circle_to_squareA  s   r   c                 C   s  t |}t|d }t|dd}t||| dd}t|dd}t||| dd}|jd }	tt|jd |	 d }
tj|
|	|
 |
|	|
 f }|| }tj	d|	d|	f \}}t
||	d  d ||	d  d  }d|||k< t|j t|j t|| d S )Nr   Fr   )output_sizer   rX   Tr   r?   )r   r+   r   r	   rI   rp   rE   rq   s_r   rr   r^   ru   )r   rI   r   rO   r   sinogram_rectanglereconstruction_rectangler   reconstruction_circlewidthexcessr   r   r   r   r5   r5   r6   check_radon_iradon_circleF  s0   
&

r   )r   )r   r   a   z!shape, interpolation, output_sizec                 C   s   t || | d S r8   )r   )rI   r   r   r5   r5   r6   test_radon_iradon_circlek  s   r   c                  C   s   ddl m}  tjd g d}|D ]/}tjdd|dd}tjdd|}||fD ]}dd	 | |D }t|tt|ks@J q)qd S )
Nr   )order_angles_golden_ratioi  )r   r>   r   rl   rl   FrA   c                 S   s   g | ]}|qS r5   r5   )r   r;   r5   r5   r6   r   {  s    z2test_order_angles_golden_ratio.<locals>.<listcomp>)	r   r   rE   r   r   rH   uniformlenset)r   lengthsltheta_orderedtheta_randomrD   indicesr5   r5   r6   test_order_angles_golden_ratios  s   r   c            
         s  d} t tddd dd}tjdd|jd dd}tjdd	|jd d
d}|df|dffD ]8\}}t||d
dt|}| rtrddlm	} |
  |d |j|dd |d |jdd |d |j|dd |d |j|| dd |  tt|| }td| |d| k sJ t||}tt|| }td| |d| k sJ t|dd}tt|| }td| |d| k sJ tjd tjddjd   tjd t fd!d"tjd  D j}	t|	| d#}| rLtrLddlm	} |
  |d |j|dd |d |j|	dd |d |j|dd |d |j|| dd |  tt|| }td$| |d%| k sdJ q+d S )&NFg?reflect)r   r   r   r?   r@   r   rA   g     b@TrW   g       @r   r   r    r   )r   rm   rn   ro   zdelta (1 iteration) =g{Gz?zdelta (2 iterations) =gy&1?)r   r   )r   zdelta (1 iteration, clip) =g;On?i; r%   r   c              	      s.   g | ]}t  |  d d |f qS r8   )rE   interp)r   ishiftsr1   r;   r5   r6   r     s
    z$test_iradon_sart.<locals>.<listcomp>)projection_shiftsz'delta (1 iteration, shifted sinogram) =gI+?)r   r   rE   rH   rI   r   r
   r   r&   r   r(   r)   r*   r.   rK   rJ   r^   r   r   r   rF   vstackrangeT)
rw   rO   r   theta_missing_wedgerD   error_factorr   r2   r   sinogram_shiftedr5   r   r6   test_iradon_sart  sz   












r   c                 C   s   t jdtd}d|d< |d}|d}t|dg| djdks"J t|dg| dj|jks0J t|dg| dj|jks>J d S )	Nrb   r   rU   rW      r   float64float32r   )rD   rY   )rE   r\   rp   r9   r	   rV   )rY   r1   
sinogram64
sinogram32r5   r5   r6   test_iradon_dtype  s&   

r  c                  C   sB   t td} | tj}t| j| jksJ t|j|jksJ d S )NF)r   r   r9   rE   r   r   rV   )imgimg32r5   r5   r6   test_radon_dtype  s   
r  c                 C   s   t jdtd}d|d< |d}|d}tdg t|dgd	jdks'J W d    n1 s1w   Y  t|dgd	j|jksCJ t|dgd	j|jksPJ t|dg| d
j| ks]J t|dg| d
j| ksjJ t|dg| d
j| kswJ d S )Nr   rU   rW   r   r   r   zInput data is cast to floatr   rC   )rD   rV   )rE   r\   rp   r9   r   r
   rV   )rV   r1   r   r  r5   r5   r6   test_iradon_sart_dtype  s   

r  c                  C   sF   t d} tt t| td W d    d S 1 sw   Y  d S )Nr   rU   )rE   r\   r   r   r   r
   rp   )r1   r5   r5   r6   test_iradon_sart_wrong_dtype  s   
"r  r8   )Fr   numpyrE   r   "skimage._shared._dependency_checksr   skimage._shared._warningsr   skimage._shared.testingr   skimage._shared.utilsr   r   skimage.datar   skimage.transformr   r	   r
   r   r   r7   r<   rT   ra   markparametrizer   r   float16uint8boolrg   rj   r|   sizes_for_test_iradon_centerthetas_for_test_iradon_centercircles_for_test_iradon_centerr   r~   r   filter_typesinterpolation_typeslistradon_iradon_inputsappendr   r   r   r   r   r   r   r   r   r   r   r   shapes_radon_iradon_circleinterpolationsr+   r,   output_sizesr   r   r   r  r  r  r  r5   r5   r5   r6   <module>   s    
&








?

