概要

This paper presents a method for reducing diagnostic time by controlling frame rate adaptively in a capsule endoscopic image sequence captured during 8 hours. Depending on the skill, it requires from 45 minutes to two hours to evaluate the video sequence under extreme concentration of medical doctors. The video sequence would be played at high speed at stable regions to save time and the speed would be decreased at rough changing that can help suspicious findings more conveniently. The capturing conditions are classified into groups corresponding to changing levels between two frames. The delay time of these frames was calculated by the parametric function. The optimal parameter set is determined from evaluations by medical doctors. In conclusion, the average diagnostic time can be reduced from 8 hours down to around 30 minutes.