A very flexible and easy-to-use scheme which possesses unique advantages over existing systems is presented in this article. The scheme is based on the partitioning of a character into parts, A character is inputted by specifying the sequence of character parts descriptions, which is then matched against the standard sequences of the characters in the character set. A character part is either described with a unique key or its stroke count. The matching algorithm allows the characters to be partitioned flexibly and inputted in many different ways. An automatic binding mechanism offers very high adaptability to the input style of the user. The user need not remember all the key bindings before he can input Chinese and the scheme is also capable of tolerating many variations in character style and/or errors.

Indoor localization has been receiving great interest and 2D localization system based on infrared LED-based wiimote camera is also well-developed. Although 3D positioning techniques based on infrared LED detection have been proposed and validated, it is not yet matured for general indoor localization due to its insufficient sensing zone and specific layout attitude, which may not always have been satisfied. In this work, based on previous research, a layout is proposed to extend the sensing region to cover the entire indoor space by deploying many wiimote 3D pairs and make sure the object can be detected by at least two wiimote pairs during motion. However, this also implies that the original optimal deployed attitude cannot be maintained. As a result, to deal with this problem, a variable-angle dual wiimote 3D system is developed and corresponding localization performance and sensitivity analysis is carried out for clarifying the above concern. From sensitivity analysis result, better performance in X displacement detection is achieved with the orientation setting in 90 • , and the results also shows the system to be more sensitive to the error in orientation. Furthermore, the scheme is also applied to robot arm attitude determination, and shows the high possibility for this system developing into an effective external sensor for robot arm controlling. It is expected that this wiimote 3D localization system to have a great potential on inexpensive and precise general indoor localization system.

Indoor localization has been receiving great interest and 2D localization system based on infrared LED-based wiimote camera is also well-developed. Although 3D positioning techniques based on infrared LED detection have been proposed and validated, it is not yet matured for general indoor localization due to its insufficient sensing zone and specific layout attitude, which may not always been satisfied. In this work, based on our previous research, we propose a layout to extend the sensing region to cover the entire indoor space by deploying many wiimote 3D pairs and make sure at least the object can be detected by at least two wiimote pairs during motion. However, this also implies that the original optimal deployed attitude cannot be maintained. As a result, to deal with this problem, a variable-angle dual wiimote 3D system is developed and corresponding localization performance and sensitivity analysis is carried out for clarifying the above concern. From sensitivity analysis result, deployment of wiimote cameras requires higher accuracy in orientation when angles between coordinates of both cameras are 90° , and tolerance in position error decreases when angles between both cameras is further from 90°. Furthermore, the scheme is also applied to robot arm attitude determination, and shows the high possibility for this system developing into an effective external sensor for robot arm controlling. It is expected that this wiimote 3D localization system to have a great potential on inexpensive and precise general indoor localization system.