o e @szddlZddlmZdejdejdejfddZdd ejd edejfd d Zd ejdejdededejdej f ddZ dS)N) functionalpts1pts2returncCsHtd||}|||jddd||jddd7}|S)a Get squared Euclidean Distance Matrix Computes pairwise squared Euclidean distances between points Args: pts1: Tensor [M x D], M is the number of points, D is feature dimensionality pts2: Tensor [N x D], N is the number of points, D is feature dimensionality Return: Tensor [M, N]: matrix of squared Euclidean distances; at index (m, n) it contains || pts1[m] - pts2[n] ||^2 T)keepdimN)torchmmtsum contiguous)rredmrP/home/jovyan/fileviewer/workspace/yisol/IDM-VTON/densepose/modeling/cse/utils.py!squared_euclidean_distance_matrixs ,rư> embeddingsepsiloncCs|tj|jdddd|dS)aD Normalize N D-dimensional embedding vectors arranged in a tensor [N, D] Args: embeddings (tensor [N, D]): N D-dimensional embedding vectors epsilon (float): minimum value for a vector norm Return: Normalized embeddings (tensor [N, D]), such that L2 vector norms are all equal to 1. NrT)pdimr)min)r clampnorm)rrrrrnormalize_embeddingss rEShwmesh_vertex_embeddingsdevicecCstj|||fddd|}tj|||fddd|}|ddk}tj|jtj|d} |dd|f} d} g} t | dkrG| |fSt t | d| dD]} | | | | | d}| tj t ||ddqSt| | |<| |fS) a Interpolate Embeddings and Segmentations to the size of a given bounding box, and compute closest vertices and the segmentation mask Args: E (tensor [1, D, H, W]): D-dimensional embedding vectors for every point of the default-sized box S (tensor [1, 2, H, W]): 2-dimensional segmentation mask for every point of the default-sized box h (int): height of the target bounding box w (int): width of the target bounding box mesh_vertex_embeddings (tensor [N, D]): vertex embeddings for a chosen mesh N is the number of vertices in the mesh, D is feature dimensionality device (torch.device): device to move the tensors to Return: Closest Vertices (tensor [h, w]), int, for every point of the resulting box Segmentation mask (tensor [h, w]), boolean, for every point of the resulting box bilinear)sizemoder)dtyper Ni'r)r)F interpolatetoargmaxr zerosshapelongr lenrangeappendargminrcat)rrrrrr Zembedding_resizedZcoarse_segm_resizedmaskZclosest_verticesall_embeddingsZ size_chunkrchunkZchunk_embeddingsrrr!get_closest_vertices_mask_from_ES&s$  r4)r) r torch.nnrr%Tensorrfloatrintr r4rrrrs"