Lifelogging keyframe selection using image quality measurements and physiological excitement features
Photchara Ratsamee, Yasushi Mae, Amornched Jinda-apiraksa, Jana Machajdik, Kenichi Ohara, Masaru Kojima, Robert Sablatnig, Tatsuo Arai · 2013
Keyframe selection is the process of finding a representative frame in an image sequence. Although mostly known from video processing, keyframe selection faces new challenges in the lifelog domain. To obtain a keyframe that is close to a user-selected frame, we propose a keyframe selection method based on image quality measurements and excitement features. Image quality measurements such as contrast, color variance, sharpness, noise and saliency are used to filter high quality images. However, high quality images are not necessarily keyframes because humans also use emotions in the selection process. In this study, we employ a biosensor to measure the excitement of humans. In previous investigation, keyframe selection using only image quality measurements yielded an acceptance rate of 79.70%. Our proposed method achieves an acceptance rate of 84.45%.