New calibration

Freeze a frame, mark the area, line, direction, and end color.

Calibration name

Upload video

Freeze a frame to calibrate.

Drag anywhere on the frame to slide the counting line left ↔ right. The arrows show the counting direction (left → right).

No frozen frame yet — click “Freeze for calibration” above to enable the detection preview.

Model

Counting mode

Counts throughput = local density × belt speed, integrated. Best for a dense conveyor (incl. stop/start). Position the line where the belt crosses and set the direction to match its flow.

Counting direction

Density band — ±90px around the line

Local density is measured inside the grey band at the line. Keep it a few rows wide; set to full width to use whole-frame density.

Confidence threshold (0.25)

Higher drops false ends on machine parts; lower recovers misses in dense piles.