readme.md

August 31, 2026 · View on GitHub

The scene requires undistortion using the provided camera parameters, undistortion scripts, and frame-0 calibration. Use the scripts below to copy parameters to other frames and run COLMAP undistortion.

Run all commands from this directory:

cd utils/multiview_data_process

Steps

Convert multi-view videos (.mp4) into per-frame images (.png). Edit the number of viewpoints (line 32) and video path (line 34) in video2stream.py:
```
python video2stream.py
```
Undistort and calibrate frame 0. If you use our provided cameras, skip this step after placing the camera files and distorted images in images/ under /path/dataset/VRU_long/frame000000:
```
python convert.py -s /path/dataset/VRU_long/frame000000
```
Copy camera parameters from frame000000 to all other frames, and copy undistortion parameters to the parent scene directory:
```
python copy_cams.py --source /path/dataset/VRU_long/frame000000 --scene /path/dataset/VRU_long
```
Undistort the remaining frames and write results to each frame's images/ folder. For sequences longer than 250 frames, also set --last_frame_id in convert_frames.py:
```
python convert_frames.py -s /path/dataset/VRU_long
```