Orange-lined triggerfish · w22_fish2

Balistapus undulatus · Balistidae · 98% · high reconstructed model: good
Reviewer: triggerfish outline with yellow caudal

Where it comes from

Original video (longest visit, 28:15-28:26), 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

poster

Species

Orange-lined triggerfish Balistapus undulatus Balistidae
98.3%
Honeycomb filefish Cantherhines pardalis Monacanthidae
0.8%
Dusky wrasse Halichoeres marginatus Labridae
0.4%
Bluethroat triggerfish Sufflamen albicaudatum Balistidae
0.3%
Yellowtail tang Zebrasoma xanthurum Acanthuridae
0.2%

Family: Balistidae 99%, Monacanthidae 1%, Labridae 0% · agreement across crops 100% · 64 crops · bioclip-2.5 (hf-hub:imageomics/bioclip-2.5-vith14, open_clip, zero-shot)

Crops used for the species vote

Data and reconstruction

window22:00 – 32:00
visits6: 25:02-25:03, 28:13-28:25, 29:28-29:31, 29:46-29:52, 30:11-30:15, 31:05-31:07
frames (10 fps) detected / kept284 / 265
valid poses (10 fps)278
frames with background plate279
median size94.0 px
30 fps frames / valid poses704 / 659
method4D GS, fins + bending + tail (30 fps)
model shownv1 (gs_final)
iterations4000
gaussians19793
training time22 min
trainer validation PSNR full / masked26.7 / 21.4 dB
trainer validation IoU vs SAM mask0.881
near-fish band PSNR (fins)27.3 dB
production statusdone
visual note (curation)dark triggerfish with orange tail: orange-lined triggerfish, Balistapus undulatus (first guessed Zebrasoma xanthurum; a few triggerfish/parrotfish frames)

Diagnostics

Tracklet contact sheet (selection)
Held-out frames: real crop vs 4D render (composited over the plate)
Held-out frames: render on black
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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