INSTRUCT.md

INSTRUCTION

Here, we provide an explanation of some key parameters in pipe/cfgs/basic.yaml to facilitate parameter adjustments. For more details, please refer to our paper.

• scene.outpaint.outpaint_extend_times

  • This parameter controls the outpaint ratio of the image when constructing the global scaffold. A larger value will result in smoother scene boundaries, but it may also introduce distortion. A recommended range is between 0.3 and 0.6.

• scene.traj

  • .n_sample: This parameter controls the number of warp-and-inpaint iterations for A. The more iterations, the higher the scene integrity (fewer holes). In most cases, a value of 10 is sufficient.
  • .far_percentage / .traj_forward_ratio / .traj_backward_ratio
    • These parameters control the range of the camera's spiral trajectory (also the final scene) in ops/trajs. Directly reconstruct a quite large scene might cause distortions.
    • far_percentage controls the scale of the trajectory range. For large-scale scenes (especially those involving the sky or large windows), we recommend reducing this value. An example is in this issue.
    • traj_forward_ratio and traj_backward_ratio control the forward and backward range of the camera, respectively.

• scene.mcs

  • .steps means the MCS refine steps. We suggest a value between 8 and 15.
  • .n_view means the number of viewpoints optimized simultaneously in MCS. On a RTX4090 (24GB), 8 is feasible.
  • .rect_w determines the MCS control strength. We suggest 0.3-0.8.