Fig. 1. Solution of transformation matrix between two small targets. (a) Position 1; (b) position 2

Fig. 2. Diagram of global calibration for non-overlapping FOV cameras

Fig. 3. Flowchart of proposed algorithm

Fig. 4. Experimental setup. (a) Measure system; (b) images captured by camera 1; (c) images captured by camera 2

Fig. 5. Measurement errors of different positions between two targets. (a) X axis; (b) Y axis

Fig. 6. Measurement error under different Gauss white noise. (a) X axis; (b) Y axis

Fig. 7. Global calibration for non-overlapping FOV cameras by using mobile robot platform. (a) TurtleBot mobile robot; (b) global calibration platform

Fig. 8. Measurement error of relative distance of markers