Setup and Calibration Questions
Posted: Thu Jan 11, 2024 1:05 pm
Hello,
I have a few questions regarding camera setup and calibration.
1. On the website, it states that the optimal camera placement for a two-camera setup is 30-45 degrees. What would be the optimal setup for 3 cameras?
2. For the checkerboard placement during calibration, does the checkerboard need to be on the floor? We had the checkerboard on the floor and tried calibrating it several times but it said the board was not seen by one of three cameras. When the checkerboard was elevated by a step stool it was able to be seen by all three cameras. Also, in the picture for calibration (see attachment), the checkerboard is elevated too so I just wanted to know the explanation of where the checkerboard should be placed.
3. Where does the participant need to stand for calibration? Close to the camera? We are using OpenCap to study gait patterns so we have the participant start 10m away from the camera and walk towards them. Can calibration happen from that distance?
I have a few questions regarding camera setup and calibration.
1. On the website, it states that the optimal camera placement for a two-camera setup is 30-45 degrees. What would be the optimal setup for 3 cameras?
2. For the checkerboard placement during calibration, does the checkerboard need to be on the floor? We had the checkerboard on the floor and tried calibrating it several times but it said the board was not seen by one of three cameras. When the checkerboard was elevated by a step stool it was able to be seen by all three cameras. Also, in the picture for calibration (see attachment), the checkerboard is elevated too so I just wanted to know the explanation of where the checkerboard should be placed.
3. Where does the participant need to stand for calibration? Close to the camera? We are using OpenCap to study gait patterns so we have the participant start 10m away from the camera and walk towards them. Can calibration happen from that distance?