Information processing apparatus, information processing method, program, and information processing system

An information processing method, comprising:

• inputting a plurality of temporally continuous images taken by an image pickup apparatus;
• detecting an attention object as an attention target from a first image which is an image taken at a first time point out of the plurality of images input;
• and
• comparing the first image with one or more second images which are one or more images taken at a time point previous to the first time point, to calculate, as a second time point, a time point when the attention object appears in the continuous plurality of images.

An information processing system, comprising:

• one or more image pickup apparatuses capable of taking a plurality of temporally continuous images;
• and
• an information processing apparatus including
• an input unit configured to input a plurality of temporally continuous images taken by an image pickup apparatus,
• an attention object detection unit configured to detect an attention object as an attention target from a first image which is an image taken at a first time point out of the plurality of images input, and
• a calculation unit configured to compare the first image with one or more second images which are one or more images taken at a time point previous to the first time point, to calculate, as a second time point, a time point when the attention object appears in the continuous plurality of images.