def init_model(transform):
parser = argparse.ArgumentParser()
parser.add_argument('-mw', '--model_weights',
default='model-f6b98070.pt',
help='path to the trained weights of model'
)
parser.add_argument('-mt', '--model_type',
default='large',
help='model type: large or small'
)
parser.add_argument('--optimize', dest='optimize', action='store_true')
parser.add_argument('--no-optimize', dest='optimize', action='store_false')
parser.set_defaults(optimize=True)
args, unknown = parser.parse_known_args()
# set torch options
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = True
print("initialize")
# select device
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
print("device: %s" % device)
# load network
if args.model_type == "large":
model_path = "../MiDaS/"+args.model_weights
model = MidasNet(model_path, non_negative=True)
net_w, net_h = 384, 384
elif args.model_type == "small":
if "small" not in args.model_weights:
args.model_weights = "model-small-70d6b9c8.pt"
model_path = "../MiDaS/"+args.model_weights
model = MidasNet_small(model_path, features=64, backbone="efficientnet_lite3", exportable=True, non_negative=True, blocks={'expand': True})
net_w, net_h = 256, 256
else:
print(f"model_type '{model_type}' not implemented, use: --model_type large")
assert False
transform = Compose(
[
Resize(
net_w,
net_h,
resize_target=None,
keep_aspect_ratio=True,
ensure_multiple_of=32,
resize_method="upper_bound",
image_interpolation_method=cv2.INTER_CUBIC,
),
NormalizeImage(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]),
PrepareForNet(),
]
)
model.eval()
if args.optimize==True:
rand_example = torch.rand(1, 3, net_h, net_w)
model(rand_example)
traced_script_module = torch.jit.trace(model, rand_example)
model = traced_script_module
if device == torch.device("cuda"):
model = model.to(memory_format=torch.channels_last)
model = model.half()
model.to(device)
return (model, transform, device, args.optimize), args
def run(input_path,
output_path,
model_path,
model_type="large",
optimize=True):
"""Run MonoDepthNN to compute depth maps.
Args:
input_path (str): path to input folder
output_path (str): path to output folder
model_path (str): path to saved model
"""
print("initialize")
# select device
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
print("device: %s" % device)
# load network
if model_type == "large":
model = MidasNet(model_path, non_negative=True)
net_w, net_h = 384, 384
elif model_type == "small":
model = MidasNet_small(model_path,
features=64,
backbone="efficientnet_lite3",
exportable=True,
non_negative=True,
blocks={'expand': True})
net_w, net_h = 256, 256
else:
print(
f"model_type '{model_type}' not implemented, use: --model_type large"
)
assert False
transform = Compose([
Resize(
net_w,
net_h,
resize_target=None,
keep_aspect_ratio=True,
ensure_multiple_of=32,
resize_method="upper_bound",
image_interpolation_method=cv2.INTER_CUBIC,
),
NormalizeImage(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]),
PrepareForNet(),
])
model.eval()
if optimize == True:
rand_example = torch.rand(1, 3, net_h, net_w)
model(rand_example)
traced_script_module = torch.jit.trace(model, rand_example)
model = traced_script_module
if device == torch.device("cuda"):
model = model.to(memory_format=torch.channels_last)
model = model.half()
model.to(device)
# get input
img_names = glob.glob(os.path.join(input_path, "*"))
num_images = len(img_names)
# create output folder
os.makedirs(output_path, exist_ok=True)
print("start processing")
for ind, img_name in enumerate(img_names):
print(" processing {} ({}/{})".format(img_name, ind + 1, num_images))
# input
img = utils.read_image(img_name)
img_input = transform({"image": img})["image"]
# compute
with torch.no_grad():
sample = torch.from_numpy(img_input).to(device).unsqueeze(0)
if optimize == True and device == torch.device("cuda"):
sample = sample.to(memory_format=torch.channels_last)
sample = sample.half()
prediction = model.forward(sample)
prediction = (torch.nn.functional.interpolate(
prediction.unsqueeze(1),
size=img.shape[:2],
mode="bicubic",
align_corners=False,
).squeeze().cpu().numpy())
prediction /= 1000
# output
filename = os.path.join(
output_path,
os.path.splitext(os.path.basename(img_name))[0])
utils.write_depth(filename, prediction, bits=2)
print(prediction)
print(prediction.shape)
print("finished")