We use two webcams to implement stereo vision by OpenCV modules and EV3 as a moving platform. A mission of aiming and pushing a target block was completed.

The whole procedure:
1. Camera Calibration
2. Pose Estimation
3. Calculate Hwc(camera coordinate transformation matrix) after moving
4. Find and match the target rectangle in two frames
5. triangulatePoints (Stereo Vision)
6. Calculate the target position