9i`pSrSSKrSSKJr SSKJr SSKJ r Sr Sr S S jr SS S \R4S jrg)z(Common tools to optical flow algorithms.N)ndimage)pyramid_reduce)_convertcjUR5n[U5Hup4X#S4==U- ss'M U$)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 h/var/www/html/land-doc-ocr/venv/lib/python3.13/site-packages/skimage/registration/_optical_flow_utils.py_get_warp_pointsr s4" ))+CD/ H  " Jc $[XRSS5VVs/sH up#X#- PM nnn[R"X@RS9nUHnUS[R 4nM U[ R"US/U-SSSS9-nU$s snnf) 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. Ndtype.rnearestF)ordermode prefilter)zipshapenparrayrnewaxisndizoom)r rnoscale scale_factor_rflows r _resize_flowr'!s( #5**QR.9 :9tqQU9E :88E4L #CO4  388 qcEke E L ;sB  cU/n[UR5nSnXb:aPXQU-:aH[USUSS9nURU5 [UR5nUS- nXb:a XQU-:aMHUSSS2$)azConstruct image pyramid. Parameters ---------- I : ndarray The image to be preprocessed (Grayscale or RGB). downscale : float The pyramid downscale factor. nlevel : int The maximum number of pyramid levels. min_size : int The minimum size for any dimension of the pyramid levels. Returns ------- pyramid : list[ndarray] The coarse to fine images pyramid. rN) channel_axis)minrrappend)I downscalenlevelmin_sizepyramidsizecountJs r _get_pyramidr7Bs*cG qww8'; ; 72;  Eq177|   >8'; ; 4R4=rc URUR:wa [S5e[R"U5RS;a [S5e[ [ [[X5X4U5[[X5X4U555n[R"USSR4USSR-US9nU"USSUSSU5nUSSH!upU"X[XR55nM# U$)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 flowrrrN) r ValueErrorrrcharlistrr7rzerosndimr') I0I1solverr0r1r2rr3r J0J1s r_coarse_to_finerDds: xx288BCC xx6)VWW ",i J ",i J G 88WQZ]'')GAJqM,?,??u MD '!*Q-A 5D!"+bl4:; Kr)g@r(r))__doc__numpyrscipyrr transformr util.dtyperrr'r7float32rDrrrLs9. &!.BF Rrzz2r