Chocolate-dip chromis · w02_fish7

Chromis dimidiata · Pomacentridae · 97% · high reconstructed model: good

Reviewer: two-tone body

Where it comes from

Original video (longest visit, 03:24-03:32), the selected fish boxed

Tracking: real frame + crop + 3D render at the estimated pose, species overlay

3D and 4D model

loading 3D gaussians…

Interactive canonical 3D gaussians (drag to orbit, scroll to zoom). This is the rest pose shared by every frame; the 4D part is the per-frame bending / tail motion shown on the right.

4D: canonical model replaying the learned body bending and tail beat

3D turntable of the canonical model

Poster

Species

Chocolate-dip chromis Chromis dimidiata Pomacentridae

96.9%

Axilspot hogfish Bodianus axillaris Labridae

2.4%

Whitefin damsel Pomacentrus albicaudatus Pomacentridae

0.3%

Lyretail hogfish Bodianus anthioides Labridae

0.2%

Clown coris Coris aygula Labridae

0.1%

Family: Pomacentridae 97%, Labridae 3%, Scaridae 0% · agreement across crops 97% · 64 crops · bioclip-2.5 (hf-hub:imageomics/bioclip-2.5-vith14, open_clip, zero-shot)

Data and reconstruction

window	02:00 – 12:00
visits	12: 03:22-03:24, 03:28-03:31, 07:37-07:40, 08:20-08:23, 08:26-08:29, 08:54-08:58, 09:09-09:20, 09:36-09:39, 10:16-10:20, 10:36-10:37, 10:58-11:00, 11:54-11:59
frames (10 fps) detected / kept	408 / 355
valid poses (10 fps)	273
frames with background plate	345
median size	111.0 px
30 fps frames / valid poses	720 / 426
method	4D GS, fins + bending + tail (30 fps)
model shown	v1 (gs_final)
iterations	4000
gaussians	16124
training time	18 min
trainer validation PSNR full / masked	25.8 / 20.4 dB
trainer validation IoU vs SAM mask	0.895
near-fish band PSNR (fins)	26.1 dB
production status	done
visual note (curation)	Chromis dimidiata likely

Diagnostics

Held-out frames: real crop vs 4D render (composited over the plate)

Estimated pose: fitted ellipsoid + axes on crops

Frame cleaning: identity / occlusion over time

Frames down-weighted / dropped by the robust trainer

Downloads

point_cloud.ply (canonical 3D gaussians) · poses_refined.json · model.pt (incl. per-frame 4D params) · species.json

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