Lecture video analyzer, lecture video analysis system, method and program

摘要

PROBLEM TO BE SOLVED: To provide a technology for evaluating a degree of comprehension of a participant regarding a content of any temporal range in a lecture video.SOLUTION: A lecture video analysis device comprises: a participant reaction recognition part 11 for recognizing a reaction of a participant with respect to a lecture, which is captured in any temporal range, regarding a participant video in which the participant viewing a lecture video is imaged; a comprehension degree estimation part 12 for estimating a degree of comprehension of the participant about the lecture based on a degree of the recognized positive or negative reaction of the participant; a reproduction control information acquisition part 13 for acquiring reproduction control information representing a content in which reproduction is controlled when presenting the lecture video to the participant; and a lecture video analysis part 14 for calculating information about a temporal range of the lecture video in which the comprehension of the participant is the estimated comprehension degree, based on the estimated comprehension degree, the temporal range of the participant video in which the comprehension degree is estimated, and the reproduction control information.SELECTED DRAWING: Figure 1