Observing posture of playing children

Recently, children are exercising less and less. Decreasing of children\´s physical strength is becoming a problem. There are many data about physical strength, but there are few numerical and statistical data about exercise ability. Therefore, the no-contact sensing system which can measure children\´s exercise ability numerically should be developed. This research is measures children\´s posture by using "relative stereo 3D measurement method" as a first step to analyze the exercise ability.