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Motion detection is the process of detecting a change in the position of an object relative to its surroundings or a change in the surroundings relative to an object. Motion detection can be achieved by either mechanical or electronic methods.〔(【引用サイトリンク】 title=motion detection )〕 When motion detection is accomplished by natural organisms, it is called motion perception. == Methods == Motion can be detected by: *Infrared (passive and active sensors) *Optics (video and camera systems) *Radio Frequency Energy (radar, microwave and tomographic motion detection) *Sound (microphones and acoustic sensors) *Vibration (triboelectric, seismic, and inertia-switch sensors) *Magnetism (magnetic sensors and magnetometers) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「motion detection」の詳細全文を読む スポンサード リンク
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