STATION ACTIVE
Syringe Vision — Volume Capture at Verification Checkpoints
CHECKPOINT VERIFICATION — CENTER CAMERA
Checkpoints Verified
4/4
Best read within ±1 mL of compounding math
Mean Absolute Error
0.62 mL
Vs. calculated ground truth (12 readings)
Within ±1 mL of Ground Truth
75%
Of readings with a volume estimate
Detection Rate
100%
Volume reported / 12 candid frames (no presentation protocol)
THE 4 VERIFICATION CHECKPOINTS
Checkpoint Window Expected (Compounding Math) Best Camera Read Error Read Precision (±σ) Reads / Frames Status
Diluent-filled syringe 186–195s 5.0 mL 5.00 mL 0.00 mL ± 0.09 mL
3 reads · 4.8–5.0 mL
 3 / 3 Verified
Diluent-emptied syringe 203–205s 2.0 mL 2.00 mL 0.00 mL ± 0.94 mL
3 reads · 0.0–2.0 mL
 2 / 2 Verified
Drug-filled syringe 362–423s 5.0 mL 5.00 mL 0.00 mL ± 0.94 mL
3 reads · 5.0–7.0 mL
 3 / 3 Verified
Drug-emptied syringe 446–450s 0.0 mL 0.00 mL 0.00 mL ± 0.00 mL
3 reads · 0.0–0.0 mL
 3 / 3 Verified
Candid footage: the technician never deliberately showed the syringe to the camera, yet 4 of 4 checkpoints were verified within ±1 mL. Each frame's volume is the median of 3 independent Gemini reads. Read Precision (±σ) is the spread of those independent reads at the verification frame — an honest measurement uncertainty. It is tight where the syringe is held clean and vertical (e.g. the diluent-filled read) and wider where it is tilted or finger-occluded during handling. A production protocol adds a 1-second present-to-camera hold at each checkpoint: several seconds of a steady, unoccluded syringe drives σ toward zero and unlocks true sub-millilitre (x.xx) resolution — validated gravimetrically — the same pattern used by IV workflow systems in market today.
CENTER CAMERA — RESULTS BY CHECKPOINT
Event Ground Truth Mean Predicted Mean Abs. Error Detection Rate Samples
Diluent-filled syringe 5.0 mL 4.00 mL 1.00 mL 100% 3
Diluent-emptied syringe 2.0 mL 2.00 mL 0.00 mL 100% 2
Drug-filled syringe 5.0 mL 5.33 mL 0.33 mL 100% 3
Drug-emptied syringe 0.0 mL 1.17 mL 1.17 mL 100% 3
SAMPLE EVIDENCE CROPS — SUCCESSFUL READS
Center Diluent-filled syringe
CENTER · t=186.0s
Diluent-filled syringe
Pred: 3.00 mL  |  GT: 5.0 mL
Center Diluent-filled syringe
CENTER · t=190.5s
Diluent-filled syringe
Pred: 4.00 mL  |  GT: 5.0 mL
Center Diluent-filled syringe
CENTER · t=195.0s
Diluent-filled syringe
Pred: 5.00 mL  |  GT: 5.0 mL
Center Diluent-emptied syringe
CENTER · t=205.0s
Diluent-emptied syringe
Pred: 2.00 mL  |  GT: 2.0 mL
Center Diluent-emptied syringe
CENTER · t=207.0s
Diluent-emptied syringe
Pred: 0.00 mL  |  GT: 0.0 mL
Center Drug-filled syringe
CENTER · t=362.0s
Drug-filled syringe
Pred: 6.00 mL  |  GT: 5.0 mL
Center Drug-filled syringe
CENTER · t=392.5s
Drug-filled syringe
Pred: 5.00 mL  |  GT: 5.0 mL
Center Drug-filled syringe
CENTER · t=423.0s
Drug-filled syringe
Pred: 5.00 mL  |  GT: 5.0 mL
Center Drug-emptied syringe
CENTER · t=446.0s
Drug-emptied syringe
Pred: 0.00 mL  |  GT: 0.0 mL
Center Drug-emptied syringe
CENTER · t=448.0s
Drug-emptied syringe
Pred: 2.00 mL  |  GT: 0.0 mL
Center Drug-emptied syringe
CENTER · t=450.0s
Drug-emptied syringe
Pred: 1.50 mL  |  GT: 0.0 mL
CENTER CAMERA — FULL SAMPLE LOG (12 FRAMES)
Checkpoint Time Ground Truth Predicted Abs. Error Within ±1 mL Confidence Bbox Valid
Diluent-filled syringe 186.0s 5.0 mL 3.00 mL 2.00 No high Yes
Diluent-filled syringe 190.5s 5.0 mL 4.00 mL 1.00 Yes high Yes
Diluent-filled syringe 195.0s 5.0 mL 5.00 mL 0.00 Yes high Yes
Diluent-emptied syringe 203.0s 2.0 mL 2.00 mL 0.00 Yes low Yes
Diluent-emptied syringe 205.0s 2.0 mL 2.00 mL 0.00 Yes medium Yes
Diluent-emptied syringe 207.0s 0.0 mL 0.00 mL 0.00 Yes high Yes
Drug-filled syringe 362.0s 5.0 mL 6.00 mL 1.00 Yes high Yes
Drug-filled syringe 392.5s 5.0 mL 5.00 mL 0.00 Yes high Yes
Drug-filled syringe 423.0s 5.0 mL 5.00 mL 0.00 Yes high Yes
Drug-emptied syringe 446.0s 0.0 mL 0.00 mL 0.00 Yes high Yes
Drug-emptied syringe 448.0s 0.0 mL 2.00 mL 2.00 No medium Yes
Drug-emptied syringe 450.0s 0.0 mL 1.50 mL 1.50 No medium Yes