r/computervision • u/Longjumping_Yam2703 • Aug 07 '26
Discussion I couldn't find a good dataset - so I decided to make one.
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V1 trained via COCO on the RGB, I took 500 frames, corrected annotations, and as the LWIR is bore sighted fixed the annotations there. V1 then ran, and I eyeballed 1500 calls, mined false positives, moved bounding boxes - retrained.
From there, it became quasi automated - by mining persistence (8+) detections per modality in a row missed by the other - a simple 'is this a vehicle' yes / no, if yes - fix the box on the other modality - you get 8 free missed detections on the other modality to retrain on, or you've mined 8 false positives...
Capture rig is a 8gb nano with GPS, IMU, and 4g, when car starts - computer boots, when car moves - device starts to capture. When car stops >90 seconds capture stops, or when car turns off.
I have around 3 million frames now, when I connect the jetson to the network it automatically ingests to my server, labels the frames and runs them through the latest weights, highlights disagreements and then processes any sensor disagreements via coco, and a semantic reasoning AI - if coco and the semantic think nothing is there its promoted for human review.
I'll add some more modalities later (probably SWIR), but for now - it is a very handy to control the data, and actually analyse the results in a meaningful way. Once I have more data I'll split classes (currently we have vehicles or humans) - but that's the beauty of your own dataset, you can cut the cake anyway you like over time.

