colmap sfm scale

[LevinJ]

Hi, I am trying colmap sfm point cloud to initialize Rome road surface mesh. As we know, colmap sfm reconstruction is scaleless, how do you usually determine the scale so that it can be used in Rome? Thanks.

[DRosemei]

@LevinJ You can use other sensors like imu, gps to get a real scale and align colmap poses to it

[LevinJ]

Got it, colmap Geo-registration is surely a good way to achieve this, Thanks @DRosemei.

[yuancaimaiyi]

@LevinJ You can use the code in my repository to restore scale and large scene construction https://github.com/yuancaimaiyi/colmap-fusion-gps