Abstract: A collaborative transmission method and a transmission device based on UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) connections are provided. The collaborative transmission method comprises: calculating a first rate and obtaining a first parameter, wherein the first rate is a rate using TCP to transmit packets and the first parameter is associated with the variation degree of the first rate; after obtaining the first rate, calculating a number of packets to be sent according to a target bit rate, the first parameter, the first rate, and a packet size, wherein the number of packets to be sent is the number of packets expected to be transmitted via UDP; and determining to use either UDP or TCP to send the packet according to a transmission flag and updating the number of packets to be sent when the packet number is not zero.

Abstract: A UAV (Unmanned Aerial Vehicle) control method comprises: obtaining a first image; obtaining a second image after obtaining the first image; calculating a plurality of feature points respectively according to the first image and the second image by a computing device, extracting a first feature point set and a second feature point set by the computing device; calculating a first-axial displacement and a second-axial displacement according to the first feature point set and the second feature point set by the computing device; calculating a first ROI (Region Of Interest) area, a second ROI and a third-axial displacement according to the first feature point set and the second feature point set by the computing device; adjusting a camera pose or a flight path of the UAV according to the first-axial displacement, the second-axial displacement and the third-axial displacement.

Abstract: A collaborative transmission method and a transmission device based on UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) connections are provided. The collaborative transmission method comprises: calculating a first rate and obtaining a first parameter, wherein the first rate is a rate using TCP to transmit packets and the first parameter is associated with the variation degree of the first rate; after obtaining the first rate, calculating a number of packets to be sent according to a target bit rate, the first parameter, the first rate, and a packet size, wherein the number of packets to be sent is the number of packets expected to be transmitted via UDP; and determining to use either UDP or TCP to send the packet according to a transmission flag and updating the number of packets to be sent when the packet number is not zero.

Abstract: A UAV (Unmanned Aerial Vehicle) control method comprises: obtaining a first image; obtaining a second image after obtaining the first image; calculating a plurality of feature points respectively according to the first image and the second image by a computing device, extracting a first feature point set and a second feature point set by the computing device; calculating a first-axial displacement and a second-axial displacement according to the first feature point set and the second feature point set by the computing device; calculating a first ROI (Region Of Interest) area, a second ROI and a third-axial displacement according to the first feature point set and the second feature point set by the computing device; adjusting a camera pose or a flight path of the UAV according to the first-axial displacement, the second-axial displacement and the third-axial displacement.

Abstract: The present disclosure provides a method for generating a video frame and a system thereof, including: receiving at least two frames of a video captured by an image capture unit through a network; calculating a first set of optical flow vectors of the at least two frames by a first algorithm; generating a set of modified vectors according to at least one parameter; combining the set of modified vectors and the first set of optical flow vectors to obtain a second set of optical flow vectors; and shifting one of the at least two frames according to the second set of optical flow vectors to generate a virtual image. Therefore, the present disclosure can reduce deviation caused by the latency of the network and improve user experience.

Abstract: The present disclosure provides a method for generating a video frame and a system thereof, including: receiving at least two frames of a video captured by an image capture unit through a network; calculating a first set of optical flow vectors of the at least two frames by a first algorithm; generating a set of modified vectors according to at least one parameter; combining the set of modified vectors and the first set of optical flow vectors to obtain a second set of optical flow vectors; and shifting one of the at least two frames according to the second set of optical flow vectors to generate a virtual image. Therefore, the present disclosure can reduce deviation caused by the latency of the network and improve user experience.

Abstract: An apparatus for providing a mobile streaming adaptor includes a processor configured to receive media content from a remote camera, process the received media content by capturing, encoding and encapsulating the media content at a mobile electronic device, connect to a remote streaming server through function of a mobile networked device; and stream the encapsulated media content to the mobile networked device for communication of the encapsulated content to the remote streaming server through an Internet Protocol (IP) network for real-time distribution to a communication device. A corresponding computer program product and method are also provided.

Abstract: An apparatus for providing a mobile streaming adaptor includes a processor configured to receive media content from a remote camera, process the received media content by capturing, encoding and encapsulating the media content at a mobile electronic device, connect to a remote streaming server through function of a mobile networked device; and stream the encapsulated media content to the mobile networked device for communication of the encapsulated content to the remote streaming server through an Internet Protocol (IP) network for real-time distribution to a communication device. A corresponding computer program product and method are also provided.

Abstract: A system for real-time media communication comprises a first server unit configured to interface between at least one user and a blog and a second server unit configured to process the real-time media content in a streaming mode. The first server unit comprises a publishing control module configured to identify an identity of a publisher of the at least one user, allow the publisher to transmit real-time media content if the identity of the publisher is authentic and receive a description of the real-time media content from the publisher, and a link module configured to obtain a location of the real-time media content so that the location of the real-time media content is accessible to the at least one user. The second server unit comprises a receiving module configured to receive the real-time media content, a recording module configured to record the real-time media content, and a dispatching module configured to provide the location of the real-time media content to the publishing module.

Abstract: A low-complexity spatial downscaling video transcoder and method thereof are disclosed. The transcoder comprises a decoder having a reduced DCT-MC unit, a DCT-domain downscaling unit, and an encoder. The decoder performs the DCT-MC operation at a reduced-resolution for P-/B-frames in an MPEG coded bit-stream. The DCT-domain downscaling unit is used for spatial downscaling in the DCT-domain. After the downscaling and the motion vectors re-sampling, the encoder determines the encoding modes and outputs the encoded bit-stream. Compared with the original CDDT, this invention can achieve significant computation reduction and speeds up the transcoder without any quality degradation.

Abstract: A low-complexity spatial downscaling video transcoder and method thereof are disclosed. The transcoder comprises a decoder having a reduced DCT-MC unit, a DCT-domain downscaling unit, and an encoder. The decoder performs the DCT-MC operation at a reduced-resolution for P-/B-frames in an MPEG coded bit-stream. The DCT-domain downscaling unit is used for spatial downscaling in the DCT-domain. After the downscaling and the motion vectors re-sampling, the encoder determines the encoding modes and outputs the encoded bit-stream. Compared with the original CDDT, this invention can achieve significant computation reduction and speeds up the transcoder without any quality degradation.