- Use sqrt to find the distance in pixels it traveled from one frame to the next.
- Multiply by your spatial calibration factor to convert from pixels to centimeters.
- Divide the distance in cm by the frame time.
Speed calculation of a gesture
1 view (last 30 days)
Image Analyst on 1 Jan 2021
distanceInPixels = sqrt(x1 - x2) ^ 2 + (y1 - y2) ^ 2);
distanceInCm = distanceInPixels * cmPerPixel;
speed = distanceInCm / frameTimeInSeconds;
To get the spatial calibration factor, see attached demo.