a6d4ddlZddlmZddlmZd dddZdS) N) img_as_float)productdiff)r)n_tilesc|j|jkrtdt|}t|}|dkrtj||z }n|dkr d||zz}n|dkr|j\}}tj||fd} t ||dz } t ||dz } tt|dt|dD].\} } | | zd zdkrd | | | z| dz| z| | z| dz| zf</tj |}|| || <|| || <ntd |S) a{ Return an image showing the differences between two images. .. versionadded:: 0.16 Parameters ---------- image1, image2 : 2-D array Images to process, must be of the same shape. method : string, optional Method used for the comparison. Valid values are {'diff', 'blend', 'checkerboard'}. Details are provided in the note section. n_tiles : tuple, optional Used only for the `checkerboard` method. Specifies the number of tiles (row, column) to divide the image. Returns ------- comparison : 2-D array Image showing the differences. Notes ----- ``'diff'`` computes the absolute difference between the two images. ``'blend'`` computes the mean value. ``'checkerboard'`` makes tiles of dimension `n_tiles` that display alternatively the first and the second image. z Images must have the same shape.rblendg? checkerboardFrrTzKWrong value for `method`. Must be either "diff", "blend" or "checkerboard".) shape ValueErrorrnpabsfullintrrange zeros_like)image1image2methodrimg1img2 comparisonshapexshapeymaskstepxstepyijs 4lib/python3.11/site-packages/skimage/util/compare.pycompare_imagesr#s<|v|##;<<<   D   D VD4K(( 7  D4K( > ! !w'//FWQZ'((FWQZ'((E'!*--uWQZ/@/@AA P PDAqA{aKOQYAu},a%iQ%.GGH]4(( : 4 $K D5MNN N )r)numpyrutilr itertoolsrr#r$r"r)s_6V6666666r$