def create_sintel_submission(model, iters=32, warm_start=False, output_path='sintel_submission'):
""" Create submission for the Sintel leaderboard """
model.eval()
for dstype in ['clean', 'final']:
test_dataset = datasets.MpiSintel(split='test', aug_params=None, dstype=dstype)
flow_prev, sequence_prev = None, None
for test_id in range(len(test_dataset)):
image1, image2, (sequence, frame) = test_dataset[test_id]
if sequence != sequence_prev:
flow_prev = None
padder = InputPadder(image1.shape)
image1, image2 = padder.pad(image1[None].cuda(), image2[None].cuda())
flow_low, flow_pr = model(image1, image2, iters=iters, flow_init=flow_prev, test_mode=True)
flow = padder.unpad(flow_pr[0]).permute(1, 2, 0).cpu().numpy()
if warm_start:
flow_prev = forward_interpolate(flow_low[0])[None].cuda()
output_dir = os.path.join(output_path, dstype, sequence)
output_file = os.path.join(output_dir, 'frame%04d.flo' % (frame+1))
if not os.path.exists(output_dir):
os.makedirs(output_dir)
frame_utils.writeFlow(output_file, flow)
sequence_prev = sequence
def demo(args):
model = torch.nn.DataParallel(RAFT(args))
model.load_state_dict(torch.load(args.model))
model = model.module
model.to(DEVICE)
model.eval()
with torch.no_grad():
images = glob.glob(os.path.join(args.path, '*.png')) + \
glob.glob(os.path.join(args.path, '*.jpg'))
images = natsorted(images)
for imfile1, imfile2 in tqdm(zip(images[:-1], images[1:]), total=len(images)):
try :
image1 = load_image(imfile1)
image2 = load_image(imfile2)
padder = InputPadder(image1.shape)
image1, image2 = padder.pad(image1, image2)
flow_low, flow_up = model(image1, image2, iters=20, test_mode=True) # Flow Up is the upsampled version
if args.save :
path = Path(args.path_save)
path.mkdir(parents=True, exist_ok=True)
flow = padder.unpad(flow_up[0]).permute(1, 2, 0).cpu().numpy()
frame_utils.writeFlow(imfile1.replace(args.path,args.path_save).replace('.png','.flo'), flow)
else :
viz(image1, flow_up)
except Exception as e :
print(f'Error with {imfile1} : {e}')
def evaluate_davis(model, iters=32):
""" Peform validation using the Sintel (train) split """
model.eval()
val_dataset = datasets.DAVISDataset(split='train')
for val_id in tqdm(range(len(val_dataset))):
image1, image2, image_paths = val_dataset[val_id]
image1 = image1[None].cuda()
image2 = image2[None].cuda()
padder = InputPadder(image1.shape)
image1, image2 = padder.pad(image1, image2)
_, flow_pr = model(image1, image2,
iters=iters, test_mode=True)
forward_flow = padder.unpad(flow_pr[0]).permute(1, 2, 0).cpu().numpy()
_, flow_pr = model(image2, image1,
iters=iters, test_mode=True)
backward_flow = padder.unpad(flow_pr[0]).permute(1, 2, 0).cpu().numpy()
# find out result storing paths
fpath = image_paths[0]
ind = fpath.rfind("/")
name = fpath[ind + 1:fpath.rfind(".")]
folder_path = fpath[:ind]
flow_folder = folder_path.replace("JPEGImages", "Flows")
flowviz_folder = folder_path.replace("JPEGImages", "FlowVizs")
flow_path = os.path.join(flow_folder, f"forward_{name}.flo")
flowviz_path = os.path.join(flowviz_folder, f"forward_{name}.png")
if not os.path.exists(flow_folder):
os.makedirs(flow_folder)
if not os.path.exists(flowviz_folder):
os.makedirs(flowviz_folder)
frame_utils.writeFlow(flow_path, forward_flow)
Image.fromarray(flow_viz.flow_to_image(forward_flow)).save(
open(flowviz_path, "wb"), format="PNG")
flow_path = os.path.join(flow_folder, f"backward_{name}.flo")
flowviz_path = os.path.join(flowviz_folder, f"backward_{name}.png")
frame_utils.writeFlow(flow_path, backward_flow)
Image.fromarray(flow_viz.flow_to_image(backward_flow)).save(
open(flowviz_path, "wb"), format="PNG")
def compute_flow_dir(model, dirpath, dirpathsave, resize=None) :
images = glob.glob(os.path.join(dirpath, '*.png')) + \
glob.glob(os.path.join(dirpath, '*.jpg'))
images = natsorted(images)
for imfile1, imfile2 in tqdm(zip(images[:-1], images[1:]), total=len(images)):
image1 = load_image(imfile1)
image2 = load_image(imfile2)
extension=imfile1.split('.')[-1]
padder = InputPadder(image1.shape)
image1, image2 = padder.pad(image1, image2)
flow_low, flow_up = model(image1, image2, iters=20, test_mode=True) # Flow Up is the upsampled version
if resize is not None :
flow_up = nn.functional.interpolate(flow_up, size=resize, mode='bilinear', align_corners=False)
path = Path(dirpathsave)
path.mkdir(parents=True, exist_ok=True)
flow = padder.unpad(flow_up[0]).permute(1, 2, 0).cpu().numpy()
frame_utils.writeFlow(imfile1.replace(dirpath, dirpathsave).replace(extension,'flo'), flow)
def opt_flow_estimation(args):
"""
args.path: path to the directory of the dataset that contains the images.
- base_dir/
- ArgoVerse/
- video1/
- frame1.jpg
- frame2.jpg
- video2/
- BDD/
- Charades/
- LaSOT/
- YFCC100M/
"""
model = torch.nn.DataParallel(RAFT(args))
model.load_state_dict(torch.load(args.model))
model = model.module
model.to(DEVICE)
model.eval()
with torch.no_grad():
base_dir = args.path
data_srcs = [
fn.split('/')[-1]
for fn in sorted(glob.glob(os.path.join(base_dir, '*')))
]
if args.datasrc:
data_srcs = [args.datasrc]
for data_src in data_srcs:
print("Processing", data_src)
videos = [
fn.split('/')[-1] for fn in sorted(
glob.glob(os.path.join(base_dir, data_src, '*')))
]
for idx, video in enumerate(tqdm.tqdm(videos)):
fpath = os.path.join(base_dir, data_src, video)
images = glob.glob(os.path.join(fpath, '*.png')) + \
glob.glob(os.path.join(fpath, '*.jpg'))
images = sorted(images)
for imfile1, imfile2 in zip(images[:-1], images[1:]):
image1 = load_image(imfile1)
image2 = load_image(imfile2)
padder = InputPadder(image1.shape)
image1, image2 = padder.pad(image1, image2)
flow_low, flow_up = model(image1,
image2,
iters=20,
test_mode=True)
# Store the flow vector
flow_fname = imfile1.split("/")[-1].replace(".jpg", ".flo")
flow_up_fname = flow_fname.split(".")
flow_up_fname[0] = flow_up_fname[0] + "_up"
flow_up_fname = ".".join(flow_up_fname)
flow_low_fname = flow_fname.split(".")
flow_low_fname[0] = flow_low_fname[0] + "_low"
flow_low_fname = ".".join(flow_low_fname)
up_fname = os.path.join(args.outdir, data_src, video,
flow_up_fname)
# low_fname = os.path.join(args.outdir, data_src, video, flow_low_fname)
if not os.path.exists(
os.path.join(args.outdir, data_src, video)):
os.makedirs(os.path.join(args.outdir, data_src, video))
flow_up = flow_up[0].permute(1, 2, 0).cpu().numpy()
# flow_low = flow_low[0].permute(1, 2, 0).cpu().numpy()
writeFlow(up_fname, flow_up)
