Abstract: A pointing device is disclosed in the present invention, which comprises a planar sensing unit, an inertial sensing unit and a controller unit. The planar sensing unit is capable of detecting a movement of the point device moving on a planar surface and generating a planar sensing signal accordingly. The inertial sensing unit is capable of detecting a movement of the point device while it is moving in a free space and thus generating an inertial sensing signal accordingly. The controller unit is coupled to the planar sensing unit and the inertial sensing unit for enabling the same to receive and process the planar sensing signal and the inertial sensing signal.

Abstract: A multi-trail spot click-event detection method is disclosed, which uses a camera to capture a plurality of consecutive images from a display screen. The camera is connected to a host and sends the consecutive images to the host for determining if a click-event occurs. Firstly, pixels of each difference image with the brightness difference in a pre-determined range are selected to form blobs. Next, possible spots of the blobs in each difference image are found. Then, the possible spots found are assigned to a specific trail. Finally, when a spot of the specific trail is absent at a next time point immediately after the spot is presented, occurrence of a click-event is detected.

Abstract: The present invention relates to an online interactive multimedia system and the transmission method, that the interactive system is adapted to be applied by users of a plurality of remote ends for enabling users at his/her remote end to interact with each other in an online fashion, and each remote end comprises: a at least a micro inertial sensing module, a micro processing device, an audio/video device, a network device, and a displaying device; wherein each micro inertial sensing module is capable of detecting and measuring motions of a user operating the remote end so as to generate gesture signals accordingly; the micro processing device is used for receiving/transmitting and processing audio/video as well as the gesture signals from/to other remote ends in an online fashion, while using the processed signals to control a software arranged in the online interactive multimedia system for enabling the displaying device to display images accordingly; the audio/video device is used for providing real-time a

Abstract: The present invention relates to an iris extraction method. In the method, two searching regions are defined in a face image. A deformable template match algorithm and an energy function are used to measure the energy of each pixel with different hypothetical circular templates within the searching region. Pixels with the same hypothetical radius having energies greater than a predetermined threshold are recorded as iris candidates, wherein the pixel having the maximal energy is recorded as first iris candidate. Further, it detects associated iris pairs from iris candidates in each searching region, records the lower iris candidate having the maximal energy of iris pairs as second iris candidate, and selects the best iris candidate from first iris candidate and second iris candidate. Finally, it designates the best iris candidate having the maximal energy of all best iris candidates with different hypothetical radius as the iris in the face image.

Abstract: A multi-trail spot click-event detection method is disclosed, which uses a camera to capture a plurality of consecutive images from a display screen. The camera is connected to a host and sends the consecutive images to the host for determining if a click-event occurs. Firstly, pixels of each difference image with the brightness difference in a pre-determined range are selected to form blobs. Next, possible spots of the blobs in each difference image are found. Then, the possible spots found are assigned to a specific trail. Finally, when a spot of the specific trail is absent at a next time point immediately after the spot is presented, occurrence of a click-event is detected.

Abstract: The present invention relates to an iris extraction method. In the method, two searching regions are defined in a face image. A deformable template match algorithm and an energy function are used to measure the energy of each pixel with different hypothetical circular templates within the searching region. Pixels with the same hypothetical radius having energies greater than a predetermined threshold are recorded as iris candidates, wherein the pixel having the maximal energy is recorded as first iris candidate. Further, it detects associated iris pairs from iris candidates in each searching region, records the lower iris candidate having the maximal energy of iris pairs as second iris candidate, and selects the best iris candidate from first iris candidate and second iris candidate. Finally, it designates the best iris candidate having the maximal energy of all best iris candidates with different hypothetical radius as the iris in the face image.