777 results about "Expert group" patented technology

A surgical training system includes a tracking system for tracking the position of one or more instruments during a training procedure and objectively evaluating trainee performance based upon one or more metrics using the instrument position information. Instrument position information for the training procedure can be compared against instrument position information for an expert group to generate standardized scores. Various training object can provide realistic haptic feedback during the training procedures.

FIG. 1 is a diagram of an unmanned, fully automatic, security installation with electronic pan and tilt functions, the focal plane array based motion sensor (120) of the hybrid simultaneous-mode MPEG X / JPEG X security video camera (100) is positioned to capture moving suspects, the moving suspect (800) is shown, the local area network (LAN) cable (804) is shown leading away from the hybrid MPEG X / JPEG X security video camera (100), a security room personal computer viewing station (808) is shown, lastly a digital computer tape video logging station (816) is shown.

A method and apparatus to is provided to respond to a customer query received at a customer interaction system. The method includes communicating at least one expert group to an agent; receiving a selection from the agent that identifies an expert group from the at least one expert group, the selection triggering a first immediate message that includes a request for assistance from the expert group; identifying at least one expert that is associated with the expert group; and establishing an immediate message connection between the at least one expert and the agent, wherein the immediate message connection enables the exchange of immediate messages between the at least one expert and the agent so the agent may respond to the customer query.

A digital Vestigial Sideband (VSB) transmission system and enhanced data multiplexing method are disclosed. When 1 / 2 enhanced data coded at a rate of 1 / 2 and 1 / 4 enhanced data at a rate of 1 / 4 are transmitted, timing jitter in Moving Picture Experts Group (MPEG) of Vestigial Sideband (VSB) receiver can be reduced and the size of input buffer in Moving Picture Experts Group (MPEG) decoder of the Vestigial Sideband (VSB) receiver can be reduced by multiplexing the 1 / 2 enhanced data packet and the 1 / 4 data packet at predetermined intervals. Multiplexing the 1 / 2 enhanced data packet and the 1 / 4 data packet by grouping increases the reception performance of the 1 / 4 enhanced data. Multiplexing the 1 / 2 enhanced data packet and the 1 / 4 data packet alternatively reduces the Moving Picture Experts Group (MPEG) timing jitter in the Vestigial Sideband (VSB) receiver and increases the reception performance of the 1 / 4 enhanced data.

A video compression system which is based on the image data compression system developed by the Motion Picture Experts Group (MPEG) uses various group-of-fields configurations to reduce the number of binary bits used to represent an image composed of odd and even fields of video information, where each pair of odd and even fields defines a frame. [According to a first method, each field in the group of fields is predicted using the closest field which has previously been predicted as an anchor field. According to a second method, intra fields (I-fields) and predictive fields (P-fields) are distributed in the sequence so that no two I-fields and / or no two P-fields are at adjacent locations in the sequence. According to a third method, t] The number of I-fields and P-fields in the encoded sequence is reduced by encoding one field in a given frame as a P-field or a B-field where the other field is encoded as an I-field and encoding one field in a further frame as a B-field where the other field is encoded as a P-field.

An apparatus and method for receiving a multimedia broadcasting service in a mobile communication system including a satellite digital multimedia broadcasting (DMB) reception system and a terrestrial DMB reception system. In the apparatus, a satellite DMB modem block demodulates a satellite broadcast signal received from the satellite DMB system. A terrestrial DMB modem block, sharing at least one function block with the satellite DMB modem block, demodulates a terrestrial broadcast signal received from the terrestrial DMB system. A Motion Picture Experts Group (MPEG) decoder separately decodes MPEG transport streams (TSs) for the satellite broadcast signal and the terrestrial broadcast signal.

A system providing methods for improved compression of images that have been compressed using Discrete Cosine Transform (DCT) based compression is described. A digital image that has been compressed using DCT based compression, such as an image compressed using the Joint Photographic Experts Group (JPEG) compression scheme, is received and partially decompressed to generate DCT coefficients of the image. The decoded coefficients of the image are then rearranged to aggregate like frequencies together. After rearrangement, the image is recompressed using a wavelet-based compression scheme.

A method and an apparatus for easily updating map data in real time, using a device employing map data or a navigation system, through a transport protocol expert group (TPEG) service, and a computer-readable medium storing a computer program for executing the method, as provided. The method includes determining if the map data has changed using location information received from at least one of a broadcasting network, the Internet, and a transmission medium; and updating the map data based on the location information if the map data has changed.

The invention discloses a MPEG (moving picture experts group)-DASH protocol based online video playing control system with a code rate switch control and static abstract technology. A client side requests a streaming media server to send a target video, the streaming media server sends abstracted MPD (media presentation description) files of the target video and video clip MPD files of the target video to the client side after receiving a request of the client side, the client side downloads and analyzes the abstracted MPD files from the streaming media server to acquire abstracted images of the target video and positions of the abstracted images in the target video, the abstracted images are displayed in the client side, a user is allowed to select one of the abstracted images, a selection result is recorded in the client side, the client side downloads and analyzes the video clip MPD files from the streaming media server to acquire playing information of the video clips of the target video, and the client side determines the video clip corresponding to the selected abstracted images according to the playing information and the selection result and requests to the streaming media server to send and play the target video starting from the video clip.

A method and an apparatus for easily updating map data in real time, using a device employing map data or a navigation system, through a transport protocol expert group (TPEG) service, and a computer-readable medium storing a computer program for executing the method, as provided. The method includes determining if the map data has changed using location information received from at least one of a broadcasting network, the Internet, and a transmission medium; and updating the map data based on the location information if the map data has changed.

An IP data transport method and system that makes efficient use of the subscriber television system bandwidth and uses the existing structure and equipment of the subscriber television system. The method allows several levels of IP data service within a subscriber television system. A subnet connection is established between an IP server in a headend and an external network. The existing communications paths within a subscriber television system are used to establish an IP communications route between the headend and a Home Communications Terminal (HCT). The data is communicated in an Motion Picture Experts Group (MPEG) format. Encapsulating the IP data into an MPEG format allows the existing systems to transport the IP data in the same packet streams it uses for video, audio, and control data.

Provided is a system and method for broadcasting stereoscopic video data to users on the Internet based on Moving Picture Experts Group (MPEG)-4. The system includes: an encoding server for receiving stereoscopic video data, audio data, and Object Descriptor / Binary Format for Scene (OD / BIFS), which is information for controlling a content, and encoding the data into elementary stream (ES) having an MPEG-4 structure; a web server for receiving from the client any one among two-dimensional video display mode, field-shuttering video display mode and frame-shuttering video display mode; and a streaming server for generating a RTP (RTP) packet for real-time data transmission on the Internet by multiplexing the ES based on the display mode inputted into the web server, and transmitting the RTP packet to the client.

A method, system and computer program product for creating dynamic custom headers and for controlling flow rate of Downstream External Physical layer Interface (DEPI) packets are described herein. The method comprises concatenating or fragmenting a packet descriptor of a DEPU packet based on one or more of associated packet size, maximum transmission unit, packet type, channel configuration information and flow control mode. The method further comprises creating a header for the packet based on data in a programmable header template and storing the header in a header buffer, determining whether to transmit the packet based on one of a flow meter or a maximum transmission unit size and transmitting the packet by sending the packet descriptor to an output direct memory access (DMA) controller. A flow meter flow control mode determines if a packet is to be transmitted based on packet size, bucket size, a low threshold and a high threshold. A maximum transmission unit flow control mode determines if a packet is to transmitted based on packet size and a maximum transmission unit size. The header can be customized for Packet Streaming Protocol (PSP) mode or Moving Picture Experts Group Transport Stream (MPT) mode and includes dynamic customizable fields such as User Datagram Protocol (UDP) port identification, flow identification and session identification.

The embodiment of the invention discloses a method and system for configuring a buffer area at a streaming media server side based on an MPEG (Moving Picture Experts Group)-4. The method comprises the following steps of: calculating the cache occupancy rate of cached video streaming in the current buffer area; judging whether the cache occupancy rate is greater than a preset first occupancy rate threshold and is smaller than a second occupancy rate threshold, wherein, the second occupancy rate threshold is greater than the first occupancy rate threshold; if the cache occupancy rate is smaller than the first threshold, adjusting the size of the current buffer area; if the cache occupancy rate exceeds the first threshold and is less than the second occupancy rate threshold, adjusting the video coding rate of the MPEG-4 by controlling the frame rate; and if the cache occupancy rate exceeds the second occupancy rate threshold, releasing frames according to a dynamic frame dropping algorithm. The method and the system have the beneficial effects that on the premise of ensuring no drop frame as far as possible, buffer overflow can be well prevented and effective decoding rate can be improved by dynamically configuring the capacity of the buffer area and adjusting the decoding rate of the frames, thus further improving the video quality.

Embodiments of the invention are directed toward reversible / invertible and lossless, image data hiding that can imperceptibly hide data into digital images and can reconstruct the original image without any distortion after the hidden data have been extracted in various digital image formats including, but not limited to Joint Photographic Experts Group (JPEG). In particular, embodiments of the invention provide a lossless data hiding technique for JPEG images based on histogram pairs. that embeds data into the JPEG quantized 8×8 block DCT coefficients and achieves good performance in terms of peak signal-to-noise ratio (PSNR) versus payload through manipulating histogram pairs with optimum threshold and optimum region of the JPEG DCT coefficients. Furthermore, the invented technology is expected to be able to apply to the I-frame of Motion Picture Experts Group (MPEG) video for various applications including annotation, authentication, and forensics.

The invention provides an international technology transfer public service system. The international technology transfer public service system comprises an international technology transfer and entrepreneurship incubation service subsystem and an international technical skill / service digit trading port subsystem; the international technology transfer and entrepreneurship incubation service subsystem comprises an innovation e station, an innovation demand library, a technology retrieval, a service hotline and an expert group; the international technical skill / service digit trading port subsystem comprises a high and new technology interactive exhibition system, a technical digital content manufacturing system, an industry technology mobile portal management system, an enterprise technology demand monitoring and intelligent docking system, a scientific technological incubation service purchasing system and a technology appraisement and technology appraiser training system. A digital exhibition room with multiple interactive modes on the basis of electronic data interchange (EDI) exchange terminals and the like can be established through an operating mode of combining a mobile internet and an offline innovation service platform, online offline combined technical skill (service) interactive exhibition, vertical searching, accurate pushing, expert cooperative consulting, scientific assessment and the like can be achieved, and difficulties and bottleneck problems such as difficult obtainment of technology supply-demand information, difficult value quantization and difficult transfer can be solved.

Disclosed is a broadcast splitter enabling a selective transmission in real time. The broadcast splitter divides one multi-program transport stream (MPTS), which is obtained by multiplexing motion picture expert group-2 transport streams (MPEG-2TSs), into several single program transport streams (SPTSs). In particular, the broadcast splitter for MPEG-2TSs has a function of selecting a desired SPTS by performing a switching operation with respect to an MPTS in real-time without storing the MPTS when the MPTS is split into several SPTSs. Accordingly, it is possible to transmit MPTS signals in real time because desired TSs are extracted and delivered to output ports in real time by using a broadcast switch without storing the MPTS signals in a storage unit such as a RAM.

The invention provides a hadoop-platform-based method for improving video transcoding efficiency and relates to hadoop-platform-based technologies for improving video adaptive technology efficiency. The hadoop-platform-based method for improving the video transcoding efficiency comprises subjecting a video file to storage segmentation processing through a hadoop platform; subjecting video clips generated by segmentation to FFmpeg (Fast forward moving pictures experts group) transcoding; and consigning transcoding results to an HDFS (Hadoop Distributed File System) for video clip combination, and accordingly transcoding tasks of a large amount of video data can be completed efficiently. According to the efficient video transcoding of the hadoop-platform-based video adaptive technology, the video transcoding speed is fast, the network bandwidth traffic consumption is low, the load balancing processing is appropriate and the transcoding time consumption is reduced significantly.

A processor changes frames of a videostream according to how an MPEG (Motion Picture Expert Group) encoder will encode them so that the output of the MPEG encoder has a minimal number of bits but a human eye generally does not detect distortion of the image in the frame.

An optimal site selection device for a distributed wind power plant based on a fuzzy analytic hierarchy process comprises a DSP (Digital Signal Processor) module, a keyboard input module, a liquid crystal display module, a communication module and a host computer. An optimal site selection method for the distributed wind power plant based on the fuzzy analytic hierarchy process comprises the following steps: dividing candidate wind energy resource zones in a region rich in wind energy resources, determining an evaluation index system for the site selection of the wind power plant, determining the hierarchical structure of a scheme for the site selection of the wind power plant, judging the cognition degrees of experts on selected sites for the wind power plant by an expert group judgment and group decision method to obtain the cognition degree parameters of all the experts, and constituting a criterion layer judgment matrix and an index layer judgment matrix for the site selection of the wind power plant; and finally ranking the candidate wind energy resource zones by advantages and disadvantages and determining one site for the wind power plant. Compared with the traditional analytic hierarchy process for site selection, the method has the advantages that factors are fully considered, the examination and the regulation of the consistency of the judgment matrixes are simple, easy, scientific and reasonable, and results are scientifically analyzed. The device has the advantages that through the operation processing process of the DSP, the site selection period can be shortened, and the site selection efficiency can be increased.

Transcoding between content data and description data. The transcoding may include transcoding content data to corresponding description data. Additional description information to complete the description data may be requested. The transcoding may include transcoding description data to content data, including seeking content data items that match the description data. Content data items that best match the description data may be selected and included in the content data. A user may be requested to select items from a group of matching content data items. The content data may be stored according to the Moving Pictures Expert Group-4 (MPEG-4) standard, and the description data may be stored according to the MPEG-7 standard. The transcoding may be achieved via rules stored in the Extensible Stylesheet Transformation (XSLT) format. The transcoding may be implemented on a computing device, such as a personal computer.

A system and method are provided for robust Motion Picture Experts Group (MPEG-2) multiplexing information using an adjustable time stamp. The method comprises: accepting a plurality of digital programs; encoding each program into frames; generating a decoding time stamp (DTS) and a corresponding presentation time stamp (PTS), measured with respect to a program clock reference (PCR) for each frame; generating a packetized elementary stream (PES) packet, with a PES header including the PCR, DTS, and PTS, for each frame; time division multiplexing (TDM) the PES packets into a MPEG-2 transport stream; at the time of insertion into the MPEG-2 transport stream, comparing the DTS and PTS values to the PCR value in each header; modifying the DTS value in the PES header in response to the comparison; and, transmitting the MPEG-2 transport stream.

The invention discloses a double compression detection method of a joint photographic experts group (JPEG) image. The method comprises the following steps of: correcting a JPEG image to be detected to obtain a reference image; extracting histograms of quantization discrete cosine transform (DCT) parameters of the JPEG image to be detected and the reference image, and calculating a characteristic value of each frequency according to the histograms; and performing pattern recognition on the characteristic values by using a trained classifier, and judging whether the JPEG image to be detected is subjected to double compression. In the double compression detection method of the JPEG image, because only one characteristic value of each frequency of the JPEG image to be detected and the reference image is extracted, the number of the characteristic values is small, and the training time of the classifier is short; and the characteristic values are effectively extracted, so that judgment accuracy rate is high, and performance is stable. Moreover, the invention also provides a double compression detection system of the JPEG image.

The invention discloses a method for generating a remote sensing image quick view under Linux environment and belongs to the technical field of remote sensing image processing. The method comprises that (1) an image of a band sequence (BSQ) format is generated to an image of a tagged image file (TIF) format and (2) a quick view file of a joint photographic experts group (JPEG) format is generated, wherein the step (1) comprises of a, linear mapping, b, pretreatment of decimal part of image data, c, cutting of image data in accordance with a threshold, d, histogram equalization and e, generation of an image file of the TIF format. The method has the advantages of being simple and easy to operate. The generated quick view can describe data information of a current wave band of a hyperspectral image accurately, the method is used for processing 8-position unsigned char type data converted from 32-position single precision floating point type data, and the quantification method has low noise.

The invention discloses a method for hiding the information of a JPEG (Joint Photographic Experts Group) digital image based on a modified quantization table, in particular to an improved quantization table 16*16 by changing the method of a traditional quantization table 8*8 in the JPEG standard and embedding 2 bits of information at the 2-LSBs (Least Significant Bit) of each low and medium frequency coefficients in the DCT domain after carrying out DCT (Discrete Cosine Transform) and quantization to the carrier image. On the basis of favorable robustness and invisibility, the method modifies the quantization table so as to fully extract secrete information to be hidden, greatly improve the capacity of the steganographic method in comparison with a traditional Jsteg method and obatin higher hidden image quality.

Provided is an apparatus and method for providing an adaptive streaming service based on a Moving Picture Experts Group (MPEG) file in a data communication network. An MPEG file format defined to support an adaptive streaming service between a server and a client is processed to support an adaptive streaming service between a client and a client. An MPEG file format for a particular message used in a procedure for the adaptive streaming service between the server and the client and a procedure for the adaptive streaming service between the clients is newly defined. In particular, as to the newly defined MPEG file format, necessary information for supporting the adaptive streaming service between clients is defined. As the MPEG file format, both a Transport Stream file format defined in MPEG-2 and MPEG-4 transport standards are considered.

A system, apparatus and method is provided for detecting a music list stored in a playback device, such as a Moving Picture Experts Group-1 Audio Layer-3 (MP3) player, and selectively downloading from a server to the playback device only updated current music files via the Internet such that the playback device is capable of being automatically updated by the system and method. The playback device may facilitate automatic authentication and transfer of files from the server.

An apparatus and a method for transmitting and receiving moving picture data, which can stream the moving picture through the near narrowband communication network in real time by using a portable terminal having a near field communication module like a Bluetooth module. The apparatus transmits some of audio visual data stored in the form of a file which is prescribed by Moving Picture Experts Group to the portable terminal connected to the near field communication network to allow the portable terminal to replay the audio visual data. Then, the apparatus divides the residual data into files with a desired size and transmits the files to the portable terminal, so the portable terminal can simultaneously receive and replay the moving picture.

A method (300) of converting interlaced Moving Picture Experts Group (MPEG) video signals to progressive video signals can include receiving an interlaced video signal representing a luma component specifying luma lines and a chroma component specifying chroma lines (310) wherein the chroma component can specify approximately one-half the number of lines of the luma component. The interlaced video signal can be decoded and the number of the chroma lines can be increased to approximately the same as the number of the luma lines (320). The number of chroma lines of the interlaced video signal then can be decreased (340), to substantially reverse the previous increase. The interlaced video signal then can be deinterlaced to produce a progressive video signal (350), which can be processed further (360) as needed.