Supporting system for self training of bed-making using image processing with color and distance information

The purpose of this paper was to develop a support system to help nursing trainees learn the skill of bed-making. The system consisted of three steps: measurement, evaluation, and feedback. This paper focused on the first two issues. First, the evaluation points of bed-making were determined. Next, a measurement system was constructed using color and distance information provided by Kinects and image processing. The system extracted specific segments of whole images depicting trainees, a bed, and necessary equipment. Finally, the procedure used by trainees in making beds was quantitatively evaluated using thresholds that were determined in advance by observing teachers and students involved in bed-making. Compared to the evaluation of nursing teachers, the accuracy of the evaluation system was as much as 70%.