def render_model_exemplars(pbar,
pair: ExemplarShapePair,
render_shape=config.SHAPE_REND_SHAPE):
warnings.simplefilter('ignore')
camera = cameras.spherical_coord_to_cam(pair.fov, pair.azimuth,
pair.elevation)
pbar.set_description(f'[{pair.id}] Loading shape')
mesh, materials = pair.shape.load()
camera.near, camera.far = compute_tight_clipping_planes(
mesh, camera.view_mat())
pbar.set_description(f'[{pair.id}] Rendering segments')
if not pair.data_exists(config.PAIR_FG_BBOX_NAME):
segment_im = render_segments(mesh, camera)
fg_mask = segment_im > -1
fg_bbox = mask_bbox(fg_mask)
segment_im = crop_tight_fg(segment_im,
render_shape,
bbox=fg_bbox,
fill=-1,
order=0)
pair.save_data(config.SHAPE_REND_SEGMENT_VIS_NAME,
skimage.img_as_uint(visualize_map(segment_im)))
pair.save_data(config.SHAPE_REND_SEGMENT_MAP_NAME,
(segment_im + 1).astype(np.uint8))
tqdm.write(f" * Saving {pair.get_data_path(config.PAIR_FG_BBOX_NAME)}")
pair.save_data(config.PAIR_RAW_SEGMENT_MAP_NAME,
(segment_im + 1).astype(np.uint8))
pair.save_data(config.PAIR_FG_BBOX_NAME,
fg_mask.astype(np.uint8) * 255)
else:
fg_mask = pair.load_data(config.PAIR_FG_BBOX_NAME)
fg_bbox = mask_bbox(fg_mask)
if not pair.data_exists(config.SHAPE_REND_PHONG_NAME):
pbar.set_description('Rendering phong')
phong_im = np.clip(
render_wavefront_mtl(mesh,
camera,
materials,
config.SHAPE_REND_RADMAP_PATH,
gamma=2.2,
ssaa=3,
tonemap='reinhard'), 0, 1)
phong_im = crop_tight_fg(phong_im, render_shape, bbox=fg_bbox)
pbar.set_description(f'[{pair.id}] Saving data')
pair.save_data(config.SHAPE_REND_PHONG_NAME,
skimage.img_as_uint(phong_im))
def render_model_exemplars(pbar,
pair: ExemplarShapePair,
render_shape=config.SHAPE_REND_SHAPE):
camera = cameras.spherical_coord_to_cam(pair.fov, pair.azimuth,
pair.elevation)
pbar.set_description(f'[{pair.id}] Loading shape')
mesh, materials = pair.shape.load()
camera.near, camera.far = compute_tight_clipping_planes(
mesh, camera.view_mat())
segment_im = render_segments(mesh, camera)
fg_bbox = mask_bbox(segment_im > -1)
pbar.set_description('Rendering preview')
phong_im = np.clip(
render_preview(mesh,
camera,
config.SHAPE_REND_RADMAP_PATH,
gamma=2.2,
ssaa=2), 0, 1)
phong_im = crop_tight_fg(phong_im, render_shape, bbox=fg_bbox)
vis.image(phong_im.transpose((2, 0, 1)), win='shape-preview')
pbar.set_description(f'[{pair.id}] Saving data')
with warnings.catch_warnings():
warnings.simplefilter('ignore')
pair.save_data(config.SHAPE_REND_PREVIEW_NAME,
skimage.img_as_uint(phong_im))
def crop_largest_component(image, mask, shape):
image = image.copy()[:, :, :3]
image[~mask] = 1.0
labels = morphology.label(mask)
mask = labels == np.argmax(np.bincount(labels[labels > 0].flat))
bbox = mask_bbox(mask)
if MAT_CAND_NAME == config.MATERIAL_CAND_VGG16_WHOLE_NAME:
image = crop_tight_fg(image,
shape=shape,
bbox=bbox,
fill=1.0,
use_pil=True)
else:
image = crop_tight_fg(image,
shape=shape,
bbox=bbox,
fill=1.0,
use_pil=True)
return image[:, :, :3]
def main():
logger.info("Loading models.")
with session_scope() as sess:
shapes = (
sess.query(models.Shape).order_by(models.Shape.id.asc())
# .filter_by(source='hermanmiller')
.all())
radmap_path = '/projects/grail/kpar/data/envmaps/rnl_cross.pfm'
radmap = jsd.import_radiance_map(dict(path=radmap_path))
scene = Scene()
scene.set_radiance_map(radmap)
dist = 200
camera = PerspectiveCamera(size=(1000, 1000),
fov=0,
near=0.1,
far=5000.0,
position=(0, 0, -dist),
clear_color=(1, 1, 1, 0),
lookat=(0, 0, 0),
up=(0, 1, 0))
renderer = SceneRenderer(scene,
camera=camera,
gamma=2.2,
ssaa=3,
tonemap='reinhard',
reinhard_thres=3.0,
show=args.preview)
renderer.__enter__()
for i, shape in enumerate(shapes):
if shape.data_exists(config.SHAPE_REND_PHONG_NAME):
continue
if i < args.start:
continue
if args.end != -1 and i >= args.end:
logger.info("Hit end {}={}.".format(i, args.end))
return
logger.info("[%d/%d] Processing %d", i + 1, len(shapes), shape.id)
print(shape.obj_path)
if not shape.obj_path.exists():
logger.error('Shape %d does not have a UV mapped model.', shape.id)
continue
mesh = wavefront.read_obj_file(shape.obj_path)
mesh.resize(100)
materials = wavefront.read_mtl_file(shape.mtl_path, mesh)
scene.add_mesh(mesh)
for mat_name, mat in materials.items():
roughness = math.sqrt(2 / (mat.specular_exponent + 2))
# material = BlinnPhongMaterial(mat.diffuse_color,
# mat.specular_color,
# roughness)
material = BlinnPhongMaterial(diff_color=(0.1, 0.28, 0.8),
spec_color=(0.04, 0.04, 0.04),
roughness=0.1)
scene.put_material(mat_name, material)
data_name = f'preview/phong.500x500.png'
# if shape.data_exists(data_name):
# continue
camera.position = spherical_to_cartesian(dist,
*shape.get_demo_angles())
camera.fov = 50
if args.preview:
renderer.draw()
renderer.swap_buffers()
# Set format to RGBA so we can crop foreground using alpha.
image = renderer.render_to_image(format='rgba')
image = np.clip(image, 0, 1)
fg_bbox = mask_bbox(image[:, :, 3] > 0)
image = crop_tight_fg(image[:, :, :3], (500, 500),
bbox=fg_bbox,
use_pil=True)
vis.image(image.transpose((2, 0, 1)), win='rend-preview')
shape.save_data(config.SHAPE_REND_PHONG_NAME, image)
scene.clear()
def main():
logger.info("Loading models.")
with session_scope() as sess:
shapes = sess.query(models.Shape).order_by(models.Shape.id.desc()).all()
radmap_path = '/projects/grail/kpar/data/envmaps2/rnl.cross.exr'
radmap = jsd.import_radiance_map(dict(path=radmap_path))
scene = Scene()
scene.set_radiance_map(radmap)
dist = 200
camera = PerspectiveCamera(
size=(200, 200), fov=0, near=0.1, far=5000.0,
position=(0, 0, -dist), clear_color=(1, 1, 1, 0),
lookat=(0, 0, 0), up=(0, 1, 0))
renderer = SceneRenderer(scene, camera=camera,
gamma=2.2, ssaa=3,
tonemap='reinhard',
reinhard_thres=3.0,
show=args.preview)
renderer.__enter__()
fovs = [50]
elevations = np.linspace(math.pi/4, math.pi/2 + math.pi/16, 10)
max_azimuth_samps = 36
azimuth_by_elev = {}
n_viewpoints = 0
for phi in elevations:
n_azimuths = int(round(max_azimuth_samps * math.sin(phi)))
azimuth_by_elev[phi] = np.linspace(0, 2*math.pi, n_azimuths)
n_viewpoints += n_azimuths
for i, shape in enumerate(shapes):
last_name = "alignment/renderings/fov=50,theta=6.28318531,phi=1.76714587.png"
if shape.data_exists(last_name):
tqdm.write(f'Skipping {shape.id}')
continue
if i < args.start:
continue
if args.end != -1 and i >= args.end:
logger.info("Hit end {}={}.".format(i, args.end))
return
logger.info("[%d/%d] Processing %d", i + 1, len(shapes), shape.id)
if not shape.obj_path.exists():
logger.error('Shape %d does not have a UV mapped model.', shape.id)
mesh = wavefront.read_obj_file(shape.obj_path)
mesh.resize(100)
materials = wavefront.read_mtl_file(shape.mtl_path, mesh)
scene.add_mesh(mesh)
for mat_name, mat in materials.items():
roughness = math.sqrt(2/(mat.specular_exponent + 2))
scene.put_material(mat_name,
BlinnPhongMaterial(mat.diffuse_color,
mat.specular_color,
roughness))
iterables = []
for fov, phi in itertools.product(fovs, elevations):
for theta in azimuth_by_elev[phi]:
iterables.append((fov, theta, phi))
pbar = tqdm(iterables)
for fov, theta, phi in pbar:
rend_fname = f"fov={fov},theta={theta:.08f},phi={phi:.08f}.png"
data_name = f'alignment/renderings/{rend_fname}'
if shape.data_exists(data_name):
continue
pbar.set_description(rend_fname)
camera.position = spherical_to_cartesian(dist, theta, phi)
camera.fov = fov
if args.preview:
renderer.draw()
renderer.swap_buffers()
# Set format to RGBA so we can crop foreground using alpha.
image = renderer.render_to_image(format='rgba')
image = np.clip(image, 0, 1)
fg_bbox = mask_bbox(image[:, :, 3] > 0)
image = crop_tight_fg(
image[:, :, :3], (100, 100), bbox=fg_bbox, use_pil=True)
vis.image(image.transpose((2, 0, 1)), win='rend-preview')
shape.save_data(data_name, image)
scene.clear()
def render_pair(app: brender.Brender, pair: ExemplarShapePair,
materials_by_substance, base_out_dir):
# Load shapenet mesh and resize to 1.0 to match Blender size.
rk_mesh, _ = pair.shape.load()
rk_mesh.resize(1)
with open(_TMP_MESH_PATH, 'w') as f:
wavefront.save_obj_file(f, rk_mesh)
scene = brender.Scene(app, shape=_REND_SHAPE, aa_samples=32)
envmap_rotation = (0, 0, (math.pi + math.pi/2 + pair.azimuth))
scene.set_envmap(_ENVMAP_PATH, scale=5, rotation=envmap_rotation)
with suppress_stdout():
mesh = Mesh.from_obj(scene, _TMP_MESH_PATH)
mat_substances = utils.compute_segment_substances(pair)
# Get exemplar camera parameters.
rk_camera = cameras.spherical_coord_to_cam(
pair.fov, pair.azimuth, pair.elevation, cam_dist=2.0,
max_len=_REND_SHAPE[0]/2)
segment_im = render_segments(rk_mesh, rk_camera)
camera = brender.CalibratedCamera(
scene, rk_camera.cam_to_world(), pair.fov)
scene.set_active_camera(camera)
bmats = []
segment_pbar = tqdm(rk_mesh.materials)
for segment_name in segment_pbar:
segment_pbar.set_description(f'Segment {segment_name}')
try:
mat_subst = mat_substances[segment_name]
materials = materials_by_substance[mat_subst]
except KeyError:
continue
out_dir = Path(base_out_dir, str(pair.id), str(segment_name))
out_dir.mkdir(parents=True, exist_ok=True)
material_pbar = tqdm(materials)
for material in material_pbar:
material_pbar.set_description(f'Material {material.id}')
out_path = Path(out_dir, f'{material.id}.png')
if out_path.exists():
material_pbar.set_description(
f'Material {material.id} already rendered')
continue
# Activate only current material.
bobj = None
for bobj in bpy.data.materials:
if bobj.name == segment_name:
break
bobj_matches = [o for o in bpy.data.materials
if o.name == segment_name]
if len(bobj_matches) == 0:
bmat = InvisibleMaterial(bobj=bobj)
else:
bmat = loader.material_to_brender(material, bobj=bobj)
bmats.append(bmat)
with suppress_stdout():
rend_im = scene.render_to_array()
vis.image(rend_im.transpose((2, 0, 1)), win='rend-im')
rend_im[segment_im != rk_mesh.materials.index(segment_name)] = 0
fg_bbox = mask_bbox(segment_im > -1)
rend_im = crop_tight_fg(rend_im, _FINAL_SHAPE, bbox=fg_bbox,
fill=0, use_pil=True)
with warnings.catch_warnings():
warnings.simplefilter('ignore', UserWarning)
skio.imsave(str(out_path), rend_im)
while len(bmats) > 0:
bmat = bmats.pop()
bmat.bobj.name = bmat.bobj.name
del bmat