Optical navigation method for dynamically adjusting size of image sensing region and related apparatus thereof

摘要

An optical navigation method includes: detecting inertia of an image of a feature point; and determining an effective sensing region of an image sensing array according to the detected inertia for reducing power consumption. Besides, an optical navigation apparatus includes a detecting circuit and a determining unit. The detecting circuit is arranged for detecting a moving inertia of a feature point. The determining circuit is coupled to the detecting circuit, and arranged for determining an effective sensing region of an image sensing array according to the detected moving inertia for reducing power consumption.

主权项

1. An optical navigation method, comprising:
optically detecting a moving inertia of a feature point using a plurality of images captured with an image sensing array; and determining an effective sensing region of the image sensing array according to the detected moving inertia for reducing power consumption, comprising:
estimating a next location of the feature point at next timing according to the moving inertia; anddetermining the effective sensing region which is turned on in the image sensing array according to the next location of the feature point at the next timing; wherein a plurality of sensing units included within the effective sensing area is at least composed by multiple sensing units that are not closely adjacent to each other, the effective sensing area comprising sensing units of the image sensing array; and, the multiple sensing units, not closely adjacent to each other, are formed by alternatively spacing turned-on sensing units and not-turned-on sensing units.