lcmrl
commented
6 months ago Hi, I am working to add this option directly in cameras.yaml, for now you can open database.db with COLMAP GUI and modify there the camera params or, not elegant but simple, silmply go to the function create_camera() in src/deep_image_matching/io/h5_to_db.py:
def create_camera(db: Path, image_path: Path, camera_model: str):
image = Image.open(image_path)
width, height = image.size
focal = get_focal(image_path)
if camera_model == "simple-pinhole":
model = 0 # simple pinhole
param_arr = np.array([focal, width / 2, height / 2])
elif camera_model == "pinhole":
model = 1 # pinhole
param_arr = np.array([focal, focal, width / 2, height / 2])
elif camera_model == "simple-radial":
model = 2 # simple radial
param_arr = np.array([focal, width / 2, height / 2, 0.1])
elif camera_model == "opencv":
model = 4 # opencv
param_arr = np.array([focal, focal, width / 2, height / 2, 0.0, 0.0, 0.0, 0.0])
else:
raise RuntimeError(f"Invalid camera model {camera_model}")
return db.add_camera(model, width, height, param_arr)The 4 last params in OPENCV camera model are k1, k2, p1 and p2. You can substitute zeros with your values. Thanks for the feedback, I will let you know when the new features will be added. Feel free to open an issue if you find any problem or to collaborate!
rlamarche
oUp2Uo
Hi,
First thank you for this awesome project !
I wonder if it is possible to set initial camera params in the cameras.yaml file ? For example, if I define an OPENCV camera model, can I set initial fx, fy, cx,cy, k1, k2, p1 and p2 params ?
If they are guessed, how are they guessed ?
Do I need to manually update them in the database.db colmap file ? Because the column type is a blob and it might not be easy to do it on command line.
Thank you.