Motion Detection Device and Motion Detection Method Having Rotation Calibration Function

摘要

The present invention provides a motion detection device and a motion detection method having a rotation calibrating function. The motion detection device detects a relative motion of a DUD (device under detection) with respect to a reference light source. The motion detection device includes a rotation sensor, an image sensor, and a coordinate transfer unit. The rotation sensor is disposed on the DUD for detecting rotation of the DUD to generate rotation information. The image sensor captures an image generated by the reference light source, to obtain an absolute coordinate according to a coordinate system related to the image sensor. The coordinate transfer unit calibrates the absolute coordinate according to the rotation information to generate a calibrated coordinate.