Sample project
One set of labels, four formats, validated: 2,710 boxes checked
Data processingTracking
- Data
- Labels · COCO, YOLO, CVAT video XML, WebVTT
- Volume
- 2,710 boxes · 19 classes · 125/25 train/val frames
- Status
- Sample project
The problem
Teams train in YOLO, review in CVAT and publish in COCO, and every conversion is a chance to shift a box, lose a class or leak near-identical frames between train and validation.
What we did
- Exported one source of truth to COCO (with outlines), YOLO, CVAT video XML and WebVTT captions
- Validated every box: 2,710 kept, 1 dropped (duplicate of another box on the same frame)
- Split train/validation by contiguous block, so near-duplicate neighbouring frames never land on both sides
- Checked that the same object has the same box in every format (see the excerpt)
Result
A drop-in dataset in four formats: 19 classes, 125 train and 25 validation frames, ready for `yolo detect train data=dataset.yaml`.
Labeled video · 30 seconds
- Caption track
- 00:00Yellow watermelon wedges are cut into cubes on the cutting board.
- 00:04A glass mixing bowl is set on the board and the watermelon cubes are moved into it.
- 00:08The knife is set down and the cucumber is brought to the board.
- 00:09The cucumber is peeled with the red peeler.
- 00:11The peeled cucumber is halved lengthwise and diced with the knife.
- 00:15The diced cucumber is added to the mixing bowl and the last pieces are cleared from the board.
- 00:16The board is wiped with a paper towel.
- 00:17The red onion is picked up, peeled and cut in half.
- 00:20The onion half is sliced and finely chopped with the knife.
- 00:29Chopped onion is scraped off the board into the mixing bowl with the knife.
Frames, depth and review sheet
Sample output
An excerpt from the delivered files.
same object, frame 54, three formatsexcerpt
# COCO (pixels: x, y, w, h)
"category": "olive oil bottle", "bbox": [63, 10, 273, 209]
# YOLO (class cx cy w h, normalised)
7 0.103907 0.106019 0.142187 0.193519
# CVAT video 1.1
<box frame="54" keyframe="1" xtl="63.00" ytl="10.00" xbr="336.00" ybr="219.00" />Source footage: “Farmers Market Food Demo - Watermelon Salad”, US Department of Agriculture (Agricultural Marketing Service), via Wikimedia Commons (Public domain). Labels, captions, tracks and depth by Annoroid.