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| import torch | |
| import torch.nn as nn | |
| import torch.nn.functional as F | |
| def iuvmap_clean(U_uv, V_uv, Index_UV, AnnIndex=None): | |
| Index_UV_max = torch.argmax(Index_UV, dim=1).float() | |
| recon_Index_UV = [] | |
| for i in range(Index_UV.size(1)): | |
| if i == 0: | |
| recon_Index_UV_i = torch.min( | |
| F.threshold(Index_UV_max + 1, 0.5, 0), -F.threshold(-Index_UV_max - 1, -1.5, 0) | |
| ) | |
| else: | |
| recon_Index_UV_i = torch.min( | |
| F.threshold(Index_UV_max, i - 0.5, 0), -F.threshold(-Index_UV_max, -i - 0.5, 0) | |
| ) / float(i) | |
| recon_Index_UV.append(recon_Index_UV_i) | |
| recon_Index_UV = torch.stack(recon_Index_UV, dim=1) | |
| if AnnIndex is None: | |
| recon_Ann_Index = None | |
| else: | |
| AnnIndex_max = torch.argmax(AnnIndex, dim=1).float() | |
| recon_Ann_Index = [] | |
| for i in range(AnnIndex.size(1)): | |
| if i == 0: | |
| recon_Ann_Index_i = torch.min( | |
| F.threshold(AnnIndex_max + 1, 0.5, 0), -F.threshold(-AnnIndex_max - 1, -1.5, 0) | |
| ) | |
| else: | |
| recon_Ann_Index_i = torch.min( | |
| F.threshold(AnnIndex_max, i - 0.5, 0), -F.threshold(-AnnIndex_max, -i - 0.5, 0) | |
| ) / float(i) | |
| recon_Ann_Index.append(recon_Ann_Index_i) | |
| recon_Ann_Index = torch.stack(recon_Ann_Index, dim=1) | |
| recon_U = recon_Index_UV * U_uv | |
| recon_V = recon_Index_UV * V_uv | |
| return recon_U, recon_V, recon_Index_UV, recon_Ann_Index | |
| def iuv_map2img(U_uv, V_uv, Index_UV, AnnIndex=None, uv_rois=None, ind_mapping=None, n_part=24): | |
| device_id = U_uv.get_device() | |
| batch_size = U_uv.size(0) | |
| K = U_uv.size(1) | |
| heatmap_size = U_uv.size(2) | |
| Index_UV_max = torch.argmax(Index_UV, dim=1) | |
| if AnnIndex is None: | |
| Index_UV_max = Index_UV_max.to(torch.int64) | |
| else: | |
| AnnIndex_max = torch.argmax(AnnIndex, dim=1) | |
| Index_UV_max = Index_UV_max * (AnnIndex_max > 0).to(torch.int64) | |
| outputs = [] | |
| for batch_id in range(batch_size): | |
| output = torch.zeros([3, U_uv.size(2), U_uv.size(3)], dtype=torch.float32).cuda(device_id) | |
| output[0] = Index_UV_max[batch_id].to(torch.float32) | |
| if ind_mapping is None: | |
| output[0] /= float(K - 1) | |
| else: | |
| for ind in range(len(ind_mapping)): | |
| output[0][output[0] == ind] = ind_mapping[ind] * (1. / n_part) | |
| for part_id in range(0, K): | |
| CurrentU = U_uv[batch_id, part_id] | |
| CurrentV = V_uv[batch_id, part_id] | |
| output[1, | |
| Index_UV_max[batch_id] == part_id] = CurrentU[Index_UV_max[batch_id] == part_id] | |
| output[2, | |
| Index_UV_max[batch_id] == part_id] = CurrentV[Index_UV_max[batch_id] == part_id] | |
| if uv_rois is None: | |
| outputs.append(output.unsqueeze(0)) | |
| else: | |
| roi_fg = uv_rois[batch_id][1:] | |
| # x1 = roi_fg[0] | |
| # x2 = roi_fg[2] | |
| # y1 = roi_fg[1] | |
| # y2 = roi_fg[3] | |
| w = roi_fg[2] - roi_fg[0] | |
| h = roi_fg[3] - roi_fg[1] | |
| aspect_ratio = float(w) / h | |
| if aspect_ratio < 1: | |
| new_size = [heatmap_size, max(int(heatmap_size * aspect_ratio), 1)] | |
| output = F.interpolate(output.unsqueeze(0), size=new_size, mode='nearest') | |
| paddingleft = int(0.5 * (heatmap_size - new_size[1])) | |
| output = F.pad( | |
| output, pad=(paddingleft, heatmap_size - new_size[1] - paddingleft, 0, 0) | |
| ) | |
| else: | |
| new_size = [max(int(heatmap_size / aspect_ratio), 1), heatmap_size] | |
| output = F.interpolate(output.unsqueeze(0), size=new_size, mode='nearest') | |
| paddingtop = int(0.5 * (heatmap_size - new_size[0])) | |
| output = F.pad( | |
| output, pad=(0, 0, paddingtop, heatmap_size - new_size[0] - paddingtop) | |
| ) | |
| outputs.append(output) | |
| return torch.cat(outputs, dim=0) | |
| def iuv_img2map(uvimages, uv_rois=None, new_size=None, n_part=24): | |
| device_id = uvimages.get_device() | |
| batch_size = uvimages.size(0) | |
| uvimg_size = uvimages.size(-1) | |
| Index2mask = [ | |
| [0], [1, 2], [3], [4], [5], [6], [7, 9], [8, 10], [11, 13], [12, 14], [15, 17], [16, 18], | |
| [19, 21], [20, 22], [23, 24] | |
| ] | |
| part_ind = torch.round(uvimages[:, 0, :, :] * n_part) | |
| part_u = uvimages[:, 1, :, :] | |
| part_v = uvimages[:, 2, :, :] | |
| recon_U = [] | |
| recon_V = [] | |
| recon_Index_UV = [] | |
| recon_Ann_Index = [] | |
| for i in range(n_part + 1): | |
| if i == 0: | |
| recon_Index_UV_i = torch.min( | |
| F.threshold(part_ind + 1, 0.5, 0), -F.threshold(-part_ind - 1, -1.5, 0) | |
| ) | |
| else: | |
| recon_Index_UV_i = torch.min( | |
| F.threshold(part_ind, i - 0.5, 0), -F.threshold(-part_ind, -i - 0.5, 0) | |
| ) / float(i) | |
| recon_U_i = recon_Index_UV_i * part_u | |
| recon_V_i = recon_Index_UV_i * part_v | |
| recon_Index_UV.append(recon_Index_UV_i) | |
| recon_U.append(recon_U_i) | |
| recon_V.append(recon_V_i) | |
| for i in range(len(Index2mask)): | |
| if len(Index2mask[i]) == 1: | |
| recon_Ann_Index_i = recon_Index_UV[Index2mask[i][0]] | |
| elif len(Index2mask[i]) == 2: | |
| p_ind0 = Index2mask[i][0] | |
| p_ind1 = Index2mask[i][1] | |
| # recon_Ann_Index[:, i, :, :] = torch.where(recon_Index_UV[:, p_ind0, :, :] > 0.5, recon_Index_UV[:, p_ind0, :, :], recon_Index_UV[:, p_ind1, :, :]) | |
| # recon_Ann_Index[:, i, :, :] = torch.eq(part_ind, p_ind0) | torch.eq(part_ind, p_ind1) | |
| recon_Ann_Index_i = recon_Index_UV[p_ind0] + recon_Index_UV[p_ind1] | |
| recon_Ann_Index.append(recon_Ann_Index_i) | |
| recon_U = torch.stack(recon_U, dim=1) | |
| recon_V = torch.stack(recon_V, dim=1) | |
| recon_Index_UV = torch.stack(recon_Index_UV, dim=1) | |
| recon_Ann_Index = torch.stack(recon_Ann_Index, dim=1) | |
| if uv_rois is None: | |
| return recon_U, recon_V, recon_Index_UV, recon_Ann_Index | |
| recon_U_roi = [] | |
| recon_V_roi = [] | |
| recon_Index_UV_roi = [] | |
| recon_Ann_Index_roi = [] | |
| if new_size is None: | |
| M = uvimg_size | |
| else: | |
| M = new_size | |
| for i in range(batch_size): | |
| roi_fg = uv_rois[i][1:] | |
| # x1 = roi_fg[0] | |
| # x2 = roi_fg[2] | |
| # y1 = roi_fg[1] | |
| # y2 = roi_fg[3] | |
| w = roi_fg[2] - roi_fg[0] | |
| h = roi_fg[3] - roi_fg[1] | |
| aspect_ratio = float(w) / h | |
| if aspect_ratio < 1: | |
| w_size = max(int(uvimg_size * aspect_ratio), 1) | |
| w_margin = int((uvimg_size - w_size) / 2) | |
| recon_U_roi_i = recon_U[i, :, :, w_margin:w_margin + w_size] | |
| recon_V_roi_i = recon_V[i, :, :, w_margin:w_margin + w_size] | |
| recon_Index_UV_roi_i = recon_Index_UV[i, :, :, w_margin:w_margin + w_size] | |
| recon_Ann_Index_roi_i = recon_Ann_Index[i, :, :, w_margin:w_margin + w_size] | |
| else: | |
| h_size = max(int(uvimg_size / aspect_ratio), 1) | |
| h_margin = int((uvimg_size - h_size) / 2) | |
| recon_U_roi_i = recon_U[i, :, h_margin:h_margin + h_size, :] | |
| recon_V_roi_i = recon_V[i, :, h_margin:h_margin + h_size, :] | |
| recon_Index_UV_roi_i = recon_Index_UV[i, :, h_margin:h_margin + h_size, :] | |
| recon_Ann_Index_roi_i = recon_Ann_Index[i, :, h_margin:h_margin + h_size, :] | |
| recon_U_roi_i = F.interpolate(recon_U_roi_i.unsqueeze(0), size=(M, M), mode='nearest') | |
| recon_V_roi_i = F.interpolate(recon_V_roi_i.unsqueeze(0), size=(M, M), mode='nearest') | |
| recon_Index_UV_roi_i = F.interpolate( | |
| recon_Index_UV_roi_i.unsqueeze(0), size=(M, M), mode='nearest' | |
| ) | |
| recon_Ann_Index_roi_i = F.interpolate( | |
| recon_Ann_Index_roi_i.unsqueeze(0), size=(M, M), mode='nearest' | |
| ) | |
| recon_U_roi.append(recon_U_roi_i) | |
| recon_V_roi.append(recon_V_roi_i) | |
| recon_Index_UV_roi.append(recon_Index_UV_roi_i) | |
| recon_Ann_Index_roi.append(recon_Ann_Index_roi_i) | |
| recon_U_roi = torch.cat(recon_U_roi, dim=0) | |
| recon_V_roi = torch.cat(recon_V_roi, dim=0) | |
| recon_Index_UV_roi = torch.cat(recon_Index_UV_roi, dim=0) | |
| recon_Ann_Index_roi = torch.cat(recon_Ann_Index_roi, dim=0) | |
| return recon_U_roi, recon_V_roi, recon_Index_UV_roi, recon_Ann_Index_roi | |
| def seg_img2map(segimages, uv_rois=None, new_size=None, n_part=24): | |
| device_id = segimages.get_device() | |
| batch_size = segimages.size(0) | |
| uvimg_size = segimages.size(-1) | |
| part_ind = torch.round(segimages[:, 0, :, :] * n_part) | |
| recon_Index_UV = [] | |
| for i in range(n_part + 1): | |
| if i == 0: | |
| recon_Index_UV_i = torch.min( | |
| F.threshold(part_ind + 1, 0.5, 0), -F.threshold(-part_ind - 1, -1.5, 0) | |
| ) | |
| else: | |
| recon_Index_UV_i = torch.min( | |
| F.threshold(part_ind, i - 0.5, 0), -F.threshold(-part_ind, -i - 0.5, 0) | |
| ) / float(i) | |
| recon_Index_UV.append(recon_Index_UV_i) | |
| recon_Index_UV = torch.stack(recon_Index_UV, dim=1) | |
| if uv_rois is None: | |
| return None, None, recon_Index_UV, None | |
| recon_Index_UV_roi = [] | |
| if new_size is None: | |
| M = uvimg_size | |
| else: | |
| M = new_size | |
| for i in range(batch_size): | |
| roi_fg = uv_rois[i][1:] | |
| # x1 = roi_fg[0] | |
| # x2 = roi_fg[2] | |
| # y1 = roi_fg[1] | |
| # y2 = roi_fg[3] | |
| w = roi_fg[2] - roi_fg[0] | |
| h = roi_fg[3] - roi_fg[1] | |
| aspect_ratio = float(w) / h | |
| if aspect_ratio < 1: | |
| w_size = max(int(uvimg_size * aspect_ratio), 1) | |
| w_margin = int((uvimg_size - w_size) / 2) | |
| recon_Index_UV_roi_i = recon_Index_UV[i, :, :, w_margin:w_margin + w_size] | |
| else: | |
| h_size = max(int(uvimg_size / aspect_ratio), 1) | |
| h_margin = int((uvimg_size - h_size) / 2) | |
| recon_Index_UV_roi_i = recon_Index_UV[i, :, h_margin:h_margin + h_size, :] | |
| recon_Index_UV_roi_i = F.interpolate( | |
| recon_Index_UV_roi_i.unsqueeze(0), size=(M, M), mode='nearest' | |
| ) | |
| recon_Index_UV_roi.append(recon_Index_UV_roi_i) | |
| recon_Index_UV_roi = torch.cat(recon_Index_UV_roi, dim=0) | |
| return None, None, recon_Index_UV_roi, None | |