Asia Optical Co., Ltd.

Chih-Hung Yang

Wen-Hung Hsieh

Ching-Jung Tsai

Yu-Ting Lee

An image contrast evaluation method is disclosed. First, focusing is performed based on the contrast value of an image rendered by a lens on optical sensors, wherein the calculation of the contrast value comprises: selecting an area of the image, calculating the absolute value of brightness difference between each neighboring pixel, and selecting a specific value there from as the contrast value of the image based on a distribution of the calculated absolute values of the brightness differences.

Method to evaluate contrast value for an image and applications thereof

Signal compensation systems and methods. The system comprises a sensor and a processing module. The sensor detects movements of a camera device to generate sensed signals. The processing module acquires a relative maximum value and a relative minimum value of the sensed signals, and calculates an absolute difference accordingly. The absolute difference is the absolute value of the relative maximum value added the relative minimum value. The processing module determines whether the absolute difference exceeds a predetermined value. If so, the sensed signals are identified with a drift, and compensated according to the absolute difference.

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Taichung, Taiwan

Chih-Hung Yang