Pixart Imaging Incorporated

Yu Chia Lin

Chih Hsin Lin

Tzung Min Su

Cheng Nan Tsai

Teng Wei Hsu

Yi Hsien Ko

Yuan Yu Peng

The present invention provides an optical touch system configured to determine an object region according to a brightness information acquired by a brightness sensing unit and to identify a block information of objects within the object region according to an image information acquired by an image sensing unit. The present invention further provides an objection detection method for an optical touch system.

Optical touch system and object detection method therefor

An optical touch system includes an image sensor for detecting at least one object and a processor coupled to the image sensor. The processor is configured to determine the number of pixel clusters created by the at least one object on an image generated from the image sensor and to generate gesture information when the number of pixel clusters is greater than a predetermined pixel cluster number.

Optical touch system

An image processing method for an optical touch system includes the steps of obtaining an image and generating a light distribution curve pattern from the image, selecting a target signal of the light distribution curve pattern in accordance with light intensity information of the light distribution curve pattern, determining at least one rising slope and at least one falling slope of the target signal, and selecting the target signal as an object signal when the absolute values of the at least one rising slope and at least one falling slope are greater than a threshold.

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Hsinchu, Taiwan

Yu Chia Lin