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import os
# Use a non-interactive backend
import matplotlib
import numpy as np
import torch
import torch.nn.functional as F
from skimage.transform import resize
matplotlib.use('Agg')
from .renderer import OpenDRenderer, PyRenderer
def iuv_map2img(U_uv, V_uv, Index_UV, AnnIndex=None, uv_rois=None, ind_mapping=None):
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. / 24.)
for part_id in range(1, 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:]
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 vis_smpl_iuv(
image,
cam_pred,
vert_pred,
face,
pred_uv,
vert_errors_batch,
image_name,
save_path,
opt,
ratio=1
):
# save_path = os.path.join('./notebooks/output/demo_results-wild', ids[f_id][0])
if not os.path.exists(save_path):
os.makedirs(save_path)
# dr_render = OpenDRenderer(ratio=ratio)
dr_render = PyRenderer()
focal_length = 5000.
orig_size = 224.
if pred_uv is not None:
iuv_img = iuv_map2img(*pred_uv)
for draw_i in range(len(cam_pred)):
err_val = '{:06d}_'.format(int(10 * vert_errors_batch[draw_i]))
draw_name = err_val + image_name[draw_i]
K = np.array([[focal_length, 0., orig_size / 2.], [0., focal_length, orig_size / 2.],
[0., 0., 1.]])
# img_orig, img_resized, img_smpl, render_smpl_rgba = dr_render(
# image[draw_i],
# cam_pred[draw_i],
# vert_pred[draw_i],
# face,
# draw_name[:-4]
# )
if opt.save_obj:
os.makedirs(os.path.join(save_path, 'mesh'), exist_ok=True)
mesh_filename = os.path.join(save_path, 'mesh', draw_name[:-4] + '.obj')
else:
mesh_filename = None
img_orig = np.moveaxis(image[draw_i], 0, -1)
img_smpl, img_resized = dr_render(
vert_pred[draw_i],
img=img_orig,
cam=cam_pred[draw_i],
iwp_mode=True,
scale_ratio=4.,
mesh_filename=mesh_filename,
)
ones_img = np.ones(img_smpl.shape[:2]) * 255
ones_img = ones_img[:, :, None]
img_smpl_rgba = np.concatenate((img_smpl, ones_img), axis=2)
img_resized_rgba = np.concatenate((img_resized, ones_img), axis=2)
# render_img = np.concatenate((img_resized_rgba, img_smpl_rgba, render_smpl_rgba * 255), axis=1)
render_img = np.concatenate((img_resized_rgba, img_smpl_rgba), axis=1)
render_img[render_img < 0] = 0
render_img[render_img > 255] = 255
matplotlib.image.imsave(
os.path.join(save_path, draw_name[:-4] + '.png'), render_img.astype(np.uint8)
)
if pred_uv is not None:
# estimated global IUV
global_iuv = iuv_img[draw_i].cpu().numpy()
global_iuv = np.transpose(global_iuv, (1, 2, 0))
global_iuv = resize(global_iuv, img_resized.shape[:2])
global_iuv[global_iuv > 1] = 1
global_iuv[global_iuv < 0] = 0
matplotlib.image.imsave(
os.path.join(save_path, 'pred_uv_' + draw_name[:-4] + '.png'), global_iuv
)
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