§ aÏ6d ãób—ddlZddlmZddlmZejd¬¦«d d d œd „¦«ZdS)éNé)Ú_felzenszwalb_cythoné)ÚutilsF)Úmultichannel_outputçš™™™™™é?ééÿÿÿÿ)Ú channel_axiscóˆ—|€|jdkrtd¦«‚tj|¦«}t ||||¬¦«S)aÈComputes Felsenszwalb's efficient graph based image segmentation. Produces an oversegmentation of a multichannel (i.e. RGB) image using a fast, minimum spanning tree based clustering on the image grid. The parameter ``scale`` sets an observation level. Higher scale means less and larger segments. ``sigma`` is the diameter of a Gaussian kernel, used for smoothing the image prior to segmentation. The number of produced segments as well as their size can only be controlled indirectly through ``scale``. Segment size within an image can vary greatly depending on local contrast. For RGB images, the algorithm uses the euclidean distance between pixels in color space. Parameters ---------- image : (width, height, 3) or (width, height) ndarray Input image. scale : float Free parameter. Higher means larger clusters. sigma : float Width (standard deviation) of Gaussian kernel used in preprocessing. min_size : int Minimum component size. Enforced using postprocessing. channel_axis : int or None, optional If None, the image is assumed to be a grayscale (single channel) image. Otherwise, this parameter indicates which axis of the array corresponds to channels. .. versionadded:: 0.19 ``channel_axis`` was added in 0.19. Returns ------- segment_mask : (width, height) ndarray Integer mask indicating segment labels. References ---------- .. [1] Efficient graph-based image segmentation, Felzenszwalb, P.F. and Huttenlocher, D.P. International Journal of Computer Vision, 2004 Notes ----- The `k` parameter used in the original paper renamed to `scale` here. Examples -------- >>> from skimage.segmentation import felzenszwalb >>> from skimage.data import coffee >>> img = coffee() >>> segments = felzenszwalb(img, scale=3.0, sigma=0.95, min_size=5) Nrz@This algorithm works only on single or multi-channel 2d images. )ÚscaleÚsigmaÚmin_size)ÚndimÚ ValueErrorÚnpÚ atleast_3dr)Úimager rrr s úBlib/python3.11/site-packages/skimage/segmentation/_felzenszwalb.pyÚ felzenszwalbrs]€ðrР¤ ¨Q¢ Ýð5ñ6ô6ð 6õ ŒM˜%Ñ Ô €EÝ  ¨U¸%Ø)1ð 3ñ 3ô 3ð3ó)rrr )ÚnumpyrÚ_felzenszwalb_cyrÚ_sharedrÚchannel_as_last_axisr©rrúrs}ðØÐÐÐà2Ð2Ð2Ð2Ð2Ð2ØÐÐÐÐÐð€Ô°Ð6Ñ6Ô6ð>3Ø ð>3ð>3ð>3ð>3ñ7Ô6ð>3ð>3ð>3r