| 摘要 |
An image sensor, an optical pointing device and a motion calculating method of the optical pointing device are disclosed. The optical pointing device includes an image sensor for obtaining and providing a surface image corresponding to a motion searching range; and an image processor for determining a direction and a length of an X axis and a Y axis of the motion searching range and a reference area to continuously obtain the surface image corresponding to the direction and length of the X axis and Y axis, obtaining a reference frame and a current frame using the continuously obtained surface image, setting a certain area of the reference frame corresponding to the direction and length of the X axis and Y axis of the reference area as the reference area, and calculating a correlation between the reference area and the sample frame, to thereby calculate motion. The image sensor can obtain the larger surface image in the X axis direction. Thus, even though the optical pointing device collects the image at a low sampling rate, there is an effect in that larger motion of the optical pointing device for the X axis direction can be calculated. This helps reduce the operating speed of the semiconductor to thereby reduce power consumption. |
