In the present invention, a dynamic image in which a crowd being stimulated by a subject is imaged is input (S1). The presence of each person constituting the crowd is recognized on the basis of the dynamic image (S2). The heart rate of each person in the dynamic image is determined on the basis of changes in brightness of the person's skin (S3). Attributes of each person in the dynamic image arerecognized (S4, S5). The heart rates of the respective persons are corrected so as to eliminate attribute-dependent differences in heart rate (S6). The corrected heart rates of the persons are statistically processed to determine a statistically processed value of the heart rate of the crowd (S7). A value index according to the statistically processed value of the heart rate of the crowd is outputas a degree of interest (S9, S10).
Degree-of-interest estimation device, degree-of-interest estimation method, program, and storage medium