A pulse can be stably estimated based on an image data suitable for extracting a pulse signal. A pulse estimation device includes image input portion (21) to which time-sequential captured images including at least a portion of subject H as an object are input from camera (2)； region extractor (22) that extracts a skin-color region from each of the captured images； zoom commander (28) that transmits a zoom command to camera (2) that has imaged the captured images or a user of camera (2) in order to adjust a size of the skin-color region； and pulse estimator (23) that estimates a pulse of subject H based on the skin-color region of the captured images obtained by imaging with camera (2), after the zoom command is transmitted.
