+ Ai`rRt^RIt^RIHt^RIHt^RIH t Rt Rt R Rlt ^^ ^]P3RltR#) z(Common tools to optical flow algorithms.N)ndimage)pyramid_reduce)_convertczVP4p\V4Fwr4W#R3;;,V, uu&K V#)aCompute warp point coordinates. Parameters ---------- grid : iterable The sparse grid to be warped (obtained using ``np.meshgrid(..., sparse=True)).``) flow : ndarray The warping motion field. Returns ------- out : ndarray The warp point coordinates. .)copy enumerate)gridflowoutidxgs&& f/var/www/html/photoedit/myenv/lib/python3.14/site-packages/skimage/registration/_optical_flow_utils.py_get_warp_pointsr s4" ))+CD/ H  " Jc V\WPR,4UUu.uF wr#W#, NK ppp\P!W@PR7pVFpVR\P 3,pK V\ P!V^.V,^RRR7,pV#uuppi)amRescale the values of the vector field (u, v) to the desired shape. The values of the output vector field are scaled to the new resolution. Parameters ---------- flow : ndarray The motion field to be processed. shape : iterable Couple of integers representing the output shape. Returns ------- rflow : ndarray The resized and rescaled motion field. NNdtype.nearestF)ordermode prefilter)zipshapenparrayrnewaxisndizoom)r rnoscale scale_factor_rflows&& r _resize_flowr&!s( #5**R.9 :9tqQUU9E :88E4L #CO4  388 qcEke E L ;sB%cV.p\VP4p^pWb8dTWQV,8dG\VR,VRR7pVPV4\VP4pV^, pKYVRRR1,#)azConstruct image pyramid. Parameters ---------- I : ndarray The image to be preprocessed (Grayscale or RGB). downscale : float The pyramid downscale factor. nlevel : int The maximum number of pyramid levels. min_size : int The minimum size for any dimension of the pyramid levels. Returns ------- pyramid : list[ndarray] The coarse to fine images pyramid. N) channel_axis)minrrappend)I downscalenlevelmin_sizepyramidsizecountJs&&&& r _get_pyramidr4Bsn*cG qww8'; ; 72;  Eq177|   4R4=rc tVPVP8wd \R4h\P!V4PR9d \R4h\ \ \\W4W4V4\\W4W4V444p\P!V^,^,P3V^,^,P,VR7pV!V^,^,V^,^,V4pVR,F!wrV!W\WP44pK# V#)a%Generic coarse to fine solver. Parameters ---------- I0 : ndarray The first grayscale image of the sequence. I1 : ndarray The second grayscale image of the sequence. solver : callable The solver applied at each pyramid level. downscale : float The pyramid downscale factor. nlevel : int The maximum number of pyramid levels. min_size : int The minimum size for any dimension of the pyramid levels. dtype : dtype Output data type. Returns ------- flow : ndarray The estimated optical flow components for each axis. z'Input images should have the same shapeefdgz8Only floating point data type are valid for optical flowrr) r ValueErrorrrcharlistrr4rzerosndimr&) I0I1solverr-r.r/rr0r J0J1s &&&&&&& r _coarse_to_finerAds: xx288BCC xx6)VWW ",i J ",i J G 88WQZ]'')GAJqM,?,??u MD '!*Q-A 5D"++bl4:; Kr)g@ )__doc__numpyrscipyrr transformr util.dtyperrr&r4float32rArr rKs9. &!.BF Rrzz2r