Cannot process transforms file!

[jiangyijin]

The transforms file
contains the following:
{
"camera_angle_x": 0.6911112070083618,
"frames": [
{
"file_path": "train\1",
"transform_matrix": [
[
-0.6737591624259949,
-0.06633138656616211,
-0.7359680533409119,
-3.2077853679656982
],
[
-1.689766193635478e-08,
0.9959630370140076,
-0.08976423740386963,
-0.39124584197998047
],
[
0.7389511466026306,
-0.060479454696178436,
-0.6710392236709595,
-2.9247865676879883
],
[
0.0,
0.0,
0.0,
1.0
]
]
},
I looked at your code and it doesn't have functionality to handle this.

[jiangyijin]

def load_transform_json_data(input_path, skip_rate=0):
"""
Load in poses and camera intrinsics from a transforms JSON file
"""

with open(input_path, "r") as transform_file:
    transforms = json.load(transform_file)

json_transforms = {}
intrinsics = {}

all_intrinsics = None 
if "fl_x" in transforms.keys():
    all_intrinsics = get_transform_intrinsics(transforms, transforms["frames"][0]["file_path"])

for i, frame in enumerate(transforms["frames"]):
    fname = os.path.basename(frame["file_path"])
    transform = frame["transform_matrix"]

    if all_intrinsics is None:
        intrinsics[fname] = get_transform_intrinsics(frame, frame["file_path"])
    else:
        intrinsics[fname] = all_intrinsics

    if i % (skip_rate + 1) == 0:
        json_transforms[fname] = transform 

return json_transforms, intrinsics

def get_transform_intrinsics(transforms, fname):
"""
Reads in camera intrinsics from a transforms dictionary
"""

intrinsics = [0, 0, 0, 0]

intrinsics[2] = transforms["fl_x"]

if "fl_y" in transforms.keys():
    intrinsics[3] = transforms["fl_y"] 
else:
    # Assuming that focal lengths are same in both dimensions
    intrinsics[3] = intrinsics[2]

if "w" in transforms and "h" in transforms:
    intrinsics[0] = transforms["w"] 
    intrinsics[1] = transforms["h"] 
else:
    img_pixels = cv2.imread(fname)

    intrinsics[0] = img_pixels.shape[1]
    intrinsics[1] = img_pixels.shape[0]

return intrinsics