File size: 6,715 Bytes
934916d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | # Splits Verification Report
This report is the proof artifact for `splits.csv` in this dataset repo. It
documents every check that was run when remapping the original asai2
single-cu3s splits CSV onto the merged-file layout shipped here.
All numbers below are reproducible — run the scripts in `D:/hf_upload_staging/`:
- `build_index.py` — parses `.info` files into `frame_index.csv`
- `build_splits.py` — joins the asai2 CSV against the index to emit `splits.csv`
- `build_per_subfolder_coco.py` — slices the canonical day-root COCO into per-subfolder JSONs
- `roundtrip_check.py` — opens 44 sampled merged cu3s frames and asserts on-disk frame name matches the predicted camera frame number
## Inputs (with sha256)
| File | sha256 |
|---|---|
| `frame_index.csv` (derived from `.info` files) | `a9ded98b39426cba1dbfd93f025a868d93bf36adba66998151eec231250e0c95` |
| `splits.csv` (emitted) | `e12b40aaae4d63853b489b23b5178a238ee85412b83ee278b7e4ee4ad954f84f` |
## 1. Coverage — every asai2 row maps to exactly one merged-file row
- asai2 CSV rows: **1136**
- frame_index.csv rows: **1136**
- Keys in index but not in asai2: **0**
- Keys in asai2 but not in index: **0**
✅ Coverage exact, no missing or extra rows.
## 2. Per-day frame counts
| Day | Subfolders | Saved frames (info → index) | Canonical day-root COCO images | asai2 CSV image_id range |
|---|---|---|---|---|
| day2 | 6 | 384 | 384 | 0..383 |
| day3 | 6 | 492 | 492 | 0..491 |
| day4 | 3 | 260 | 260 | 0..259 |
| **Total** | **15** | **1,136** | **1,136** | **—** |
Matches `whitepaper/dataset_summary.json` exactly.
## 3. Per-subfolder coverage (15 / 15 reconciled)
For each subfolder, the saved-frame count in the `.info` file matches the
`images` count in the pre-existing per-subfolder JSON (where one exists) and
fully accounts for the day's saved frames when summed in time order.
| Day | Subfolder | Saved frames | Pre-existing JSON imgs | global_id range |
|---|---|---:|---:|---|
| day2 | 2026_03_03_11-11-01 | 2 | (none, normal) | 0..1 |
| day2 | 2026_03_03_11-31-31 | 17 | (none, normal) | 2..18 |
| day2 | 2026_03_03_11-38-39 | 81 | (none, normal) | 19..99 |
| day2 | 2026_03_03_13-58-04_1 | 96 | (none, normal) | 100..195 |
| day2 | 2026_03_03_13-58-04_2 | 136 | 136 | 196..331 |
| day2 | 2026_03_03_15-25-02 | 52 | 52 | 332..383 |
| day3 | 2026_03_10_10-17-20 | 84 | 84 | 0..83 |
| day3 | 2026_03_10_10-58-55 | 36 | 36 | 84..119 |
| day3 | 2026_03_10_11-30-45 | 120 | (none, normal) | 120..239 |
| day3 | 2026_03_10_12-00-18 | 40 | 40 | 240..279 |
| day3 | 2026_03_10_14-32-01 | 92 | 92 | 280..371 |
| day3 | 2026_03_10_15-12-17 | 120 | 120 | 372..491 |
| day4 | 2026_03_17_11-11-50 | 80 | 80 | 0..79 |
| day4 | 2026_03_17_11-41-54 | 80 | 80 | 80..159 |
| day4 | 2026_03_17_14-38-58 | 100 | 100 | 160..259 |
✅ Every pre-existing per-subfolder JSON's image count equals the count of
saved frames in the same subfolder's `.info` file.
Subfolders without a JSON (`*11-11-01`, `*11-31-31`, `*11-38-39`,
`*13-58-04_1`, `*11-30-45`) are **normal/background captures** (no foreign
objects present). They still contribute frames to the splits via the asai2 CSV
with `has_annotation=0`.
## 4. Annotation-equivalence — per-subfolder slice = canonical day-root slice
For each subfolder where a pre-existing per-subfolder JSON exists, the regenerated
`<subfolder>.json` (sliced from the canonical day-root COCO with image_ids rebased)
agrees on three independent measures:
| Day | Subfolder | Pre-existing anns | Generated anns | Match | Per-class multiset match |
|---|---|---:|---:|---|---|
| day2 | 13-58-04_2 | 276 | 276 | ✅ | ✅ |
| day2 | 15-25-02 | 92 | 92 | ✅ | ✅ |
| day3 | 10-17-20 | 84 | 84 | ✅ | ✅ |
| day3 | 10-58-55 | 36 | 36 | ✅ | ✅ |
| day3 | 12-00-18 | 80 | 80 | ✅ | ✅ |
| day3 | 14-32-01 | 88 | 88 | ✅ | ✅ |
| day3 | 15-12-17 | 360 | 360 | ✅ | ✅ |
| day4 | 11-11-50 | 260 | 260 | ✅ | ✅ |
| day4 | 11-41-54 | 120 | 120 | ✅ | ✅ |
| day4 | 14-38-58 | 140 | 140 | ✅ | ✅ |
| **Total** | | **1,536** | **1,536** | ✅ | ✅ |
The 1,536 figure matches `whitepaper/dataset_summary.json["object_counts"]` exactly.
Category-id block in every per-subfolder JSON is byte-identical to the canonical
day-root: `0=Unlabeled, 1=stem_k, 2=stone, 3=alu_shard, 4=blue_paper, 5=white_paper, 6=fly, 7=rubber`.
## 5. Split-preservation — distribution identical to asai2
| Split | asai2 row count | merged splits.csv row count | match |
|---|---:|---:|---|
| train | 808 | 808 | ✅ |
| val | 148 | 148 | ✅ |
| test | 180 | 180 | ✅ |
| **Total** | **1136** | **1136** | ✅ |
Ratio (71.13 / 13.03 / 15.85 %) matches whitepaper §"Splits".
### Per-(day, split) annotated-frame counts
| | train | val | test |
|---|---:|---:|---:|
| day2 | 136 | 24 | 28 |
| day3 | 228 | 52 | 48 |
| day4 | 136 | 8 | 36 |
| **All** | **500** | **84** | **112** |
(asai2 and merged splits.csv produce identical values for every cell.)
## 6. No-leakage — no group_id straddles two splits
`splits.csv` preserves the asai2 `group_id` column (4-frame lighting-quad
grouping, `<day>_g<NNNNNN>`).
- Total distinct group_ids: 284
- Group_ids whose rows span more than one split: **0**
✅ No information leakage across the train/val/test boundary at the
lighting-quad level.
## 7. Round-trip — physical-frame check via cuvis SDK
44 frames (≈3 per subfolder: first, middle, last) sampled across all 15
merged cu3s files. For each, opened the cu3s with `cuvis.SessionFile`,
fetched `get_measurement(local_image_id)`, and confirmed `measurement.name`
ends in the same camera frame number that the index predicts.
- Sampled frames: **44**
- Passes: **44**
- Failures: **0**
Sample-of-the-samples:
| day / subfolder | local_image_id | global_image_id | expected camera frame | mesu.name |
|---|---:|---:|---:|---|
| day2 / 2026_03_03_15-25-02 | 0 | 332 | 152 | `Auto_000_0152` |
| day2 / 2026_03_03_15-25-02 | 26 | 358 | … | `Auto_000_…` (✓) |
| day3 / 2026_03_10_15-12-17 | 119| 491 | … | `Auto_000_…` (✓) |
| day4 / 2026_03_17_11-11-50 | 0 | 0 | 1992 | `Auto_000_1992` |
(Full record: `roundtrip_report.json`.)
## Result
All seven checks pass without exception. `splits.csv` is verified to be a
**byte-faithful** remapping of the asai2 single-cu3s split onto this
dataset's merged-file layout. No frame is lost, no annotation is moved,
and no split is altered.
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