please Please inquire about the meaning of some parameters in dataset "fox"

[lishuwei0424]

please Please inquire about the meaning of some parameters in dataset "fox",
such as
"camera_angle_x": 0.7481849417937728,
"camera_angle_y": 1.2193576119562444,
"aabb_scale": 4,
"sharpness": 31.752987436300323
Understand these parameters and make my datasets,thanks you very much!

[slash-under]

I'd recommend looking here to train new NeRF datasets: https://github.com/NVlabs/instant-ngp/blob/master/docs/nerf_dataset_tips.md

[lishuwei0424]

I'd recommend looking here to train new NeRF datasets: https://github.com/NVlabs/instant-ngp/blob/master/docs/nerf_dataset_tips.md

thanks you, according to your tips,I solve the problem，but I want to Understand these parameters ,such as "camera_angle_x": 0.7481849417937728,
"camera_angle_y": 1.2193576119562444
,so that better to use

[neilgogogo]

"camera_angle_x":
"camera_angle_y":
is camera intrinsic parameters, by which you could calculate the focal length of x and y using the angle.

fl = 0.5 * w / tan(0.5 * angle_x);
angle_x = math.atan(w/(fl_x*2))*2

[neilgogogo]

sharpness seems to be used to filter out some blurry pictures, coz there might be some burry images in a long sequence captured by a phone or camera.

[lishuwei0424]

sharpness seems to be used to filter out some blurry pictures, coz there might be some burry images in a long sequence captured by a phone or camera.

thanks you,I get it

[lishuwei0424]

"camera_angle_x": "camera_angle_y": is camera intrinsic parameters, by which you could calculate the focal length of x and y using the angle.

fl = 0.5 * w / tan(0.5 * angle_x);
angle_x = math.atan(w/(fl_x*2))*2

"camera_angle_x": and "camera_angle_y" are FOV?
I find that:
FOV_x = 2 atan(0.5 width(sensor width) / focal(mm))
FOV_y = 2 atan(0.5 height(sensor heght) / focal(mm))

[InfiniteExpression]

"camera_angle_x": and "camera_angle_y" are FOV? I find that: FOV_x = 2 atan(0.5 width(sensor width) / focal(mm)) FOV_y = 2 atan(0.5 height(sensor heght) / focal(mm))

Is that supposed to be "2*atan" or "atan2"?