An information processing apparatus includes: an imaging unit having an image sensor to detect a plurality of pieces of pixel information, the imaging unit being configured to generate an image made up of the plurality of pieces of pixel information detected by the image sensor; an image processor to detect whether a user is present or not in a predetermined detection range, based on an image made up of a plurality of pieces of pixel information detected by the image sensor; and an operation control unit to, when the image processor detects the user in the predetermined range, cancel a standby state where a part of the system functions stops. In the standby state, the imaging unit increases at least one of resolution and a frame rate in a stepwise manner to detect the plurality of pieces of pixel information.