Request for test-pair metadata for the Object changes breakdown in Table 3

[RuijieSpace]

Hi, thank you for releasing the VSCD benchmark and code!

I am evaluating a scene change detection method on the released synthetic
test set and would like to reproduce the “Object changes” breakdown in
Table 3 using exactly the same grouping as the paper.

Using the default directed pairs (0→1, 1→2, 2→3, 3→4, 4→0), the downloaded
test set contains 44 layouts and 220 video pairs.

I found object-presence/deletion text files for only these four layouts:

• Modern Hotel Room
• Neoclassical Living 01
• Vintage Room
• Wabi Sabi Living 03

These files allow us to derive appearance/disappearance counts for 20
default video pairs, but I could not find equivalent metadata for the
remaining layouts.

Could you please clarify:

1. Does the “Object changes” breakdown in Table 3 cover all 220 synthetic
   test pairs, or only a subset? If a subset was used, could you share its
   pair list and the number of pairs in each group?

2. Could you share the per-pair changed-instance counts, or simply the
   official Low/Mid/High group assignments used for Table 3?

   A CSV with the following fields would be sufficient:
   layout, reference_scene, query_scene, changed_instance_count, object_change_bin

3. Can the O/X presence tables in the released text files be used directly
   to reproduce these counts? In particular, how are relocated objects and
   objects consisting of multiple mesh components counted?

I understand the thresholds in Table 5 are:
Low: <5, Mid: 5–15, High: >15 changed instances.

If this metadata or a grouping script is already available, a pointer to
its location would be greatly appreciated.

Thank you for your help!