Patent ID: 8083604

Claim:
An information processing apparatus comprising: a stroboscope including a light source outputting a light of a specific wavelength range; a unit base which includes a supporting cylinder having an opening and a lens provided below the opening in the supporting cylinder; a filter provided so as to cover the opening of the supporting cylinder and passing only the light of the specific wavelength range; an imager, which is provided within the unit base and below the lens, imaging a first subject at a light-emission and at a non-light-emission of the stroboscope to produce a plurality of image signals at light-emission and a plurality of image signals at non-light emission; a calculator calculating information of a position or a size of the first subject by detecting a first notable portion in correspondence to the first subject from a difference between a first image signal of the plurality of image signals at light-emission and a corresponding first image signal of the plurality of image signals at non-light emission; and a performer performing information processing according to an application on the basis of the information calculated based on the difference by the calculator to provide an output according to the application, wherein the light source is provided in vicinity of the filter so as to light up the first subject.