Abstract: Methods for determining positions of objects for use in an optical touch system are provided. The optical touch system at least includes a depth image sensor and a touch plane, the depth image sensor having a sensing area covering the touch plane. First, when an object is detected by the depth image sensor, image information is obtained by using the depth image sensor, wherein the image information includes angle information and depth information related to the depth image sensor for the object. Thereafter, it is determined whether a position of the object is located at the inside or the outside of the touch plane according to the angle information and the depth information.

Abstract: A dual-mode remote control method, adapted to an electronic apparatus having an image sensor, is provided. In the method, the image sensor is used to successively capture a plurality of images. Then, infrared ray (IR) detection and/or gesture detection is determined according to at least one characteristic of the images and performed on the images, so as to obtain an action of at least one target in the images. Finally, a control command corresponding to the action is executed.

Abstract: A dual-mode input apparatus is disclosed and includes a panel, a processing module, and an image-capturing system capable of capturing images in front of the panel. The image-capturing system can capture a touch input image and a gesture input device by an image-sensing component and a light-modulating component. The processing module processes the sensed images to determine input information. Alternatively, the image-capturing system can include an image-capturing device capable of rotating relative to the panel. The processing module is therefore capable of controlling rotating of the image-capturing device so as to capture a touch input image and a gesture input image selectively for the processing module to determine input information. Therefore, the dual-mode input apparatus of the invention can provide two input modes by use of the same image device, which overcomes the limitation of a conventional single image-capturing system being applied only to a single input architecture.

Abstract: An optical touch module, a method for determining gestures thereof and a computer-readable medium are provided. The method includes the following steps. A plurality of first sensing results outputted by a first optical sensor which continuously senses a touch area from a first corner of the touch area are obtained. A plurality of second sensing results outputted by a second optical sensor which continuously senses the touch area from a second corner of the touch area are obtained. A gesture is determined according a first center of a plurality of first touch reference points of each of the first sensing results and a second center of a plurality of second touch reference points of each of the second sensing results.

Abstract: An optical touch device includes an indication plane, two image sensing units and a processing unit. The two image sensing units are disposed at two corners of the indication plane diagonal to each other, respectively, and the two corners define a diagonal line connected therebetween. The processing unit is electrically connected to the two image sensing units. When two touch points are performed on the indication plane, the processing unit determines whether the two touch points are located at opposite sides of the diagonal line, respectively, according to images sensed by the two image sensing units. Once the two touch points are located at opposite sides of the diagonal line, respectively, the processing unit calculates and outputs coordinates of the two touch points immediately according to the images sensed by the two image sensing units.