Patent ID: 8525897

Claim:
A method for predicting photographing timing of a photographing device, the method comprising steps of: performing a detection step to detect a plurality of images; performing a face determination step to determine whether or not a face is shown on the detected images; classifying the shown face into a front face or a non-front face based on a face angle of the shown face and a training database; executing a notification step to notify a shutter to perform a picture taking step if the shown face is the front face; executing a difference generation step to calculate a difference between the face angle of the shown face and a face angle of the front face if the shown face is the non-front face; executing a difference determination step when a plurality of angle differences are obtained from the detected images so as to determine whether or not neighboring angle differences arranged in sequence are unchanged, increased or reduced, then the detection step, the face determination step and the face classifying step are repeated while a photographing timing is predicted according to a reduction degree of the angle differences if the neighboring angle differences arranged in sequence are reduced; performing a waiting step to wait for the photographing timing; and performing the notification step to notify the shutter to perform the picture taking step.