Fig. 1. System diagram of virtual-real fusion system

Fig. 2. Two-dimensional image of arm

Fig. 3. Optimized two-dimensional image of arm

Fig. 4. Two dimensional image of arm not facing camera

Fig. 5. Two dimensional image of arm after rotating

Fig. 6. Experiment result for determining wrist position and width

Fig. 7. Wrist position marked by white line

Fig. 8. Fusion image of virtual watch model on arm

Fig. 9. Result of virtual-real fusion

Fig. 10. Error analysis of wrist width calculation

Fig. 11. Result of virtual real fusion in reference［7］