摘要:
A video decoder receives compressed video and processes the video to generate decompressed video comprising a plurality of pixels in a sequence of frames. For at least some of the pixels, the video decoder further determines, on a pixel by pixel basis, motion vector and quantizer values used to perform compression of the pixels and determines a quality value for each corresponding pixel using the motion vector and quantizer values, wherein the quality value provide a measure of reproduction accuracy of the decompressed video with respect to corresponding uncompressed video.
摘要:
Pixels in a provided image for which the content has been provided in error are identified. This image content is processed to provide a version of the image wherein the error is at least partially concealed while also creating ancillary information regarding the errored pixel(s) and the spatial location to which such pixel(s) corresponds to thereby provide a record that describes which pixels in the image content were provided in error. An optional user-selectable option can permit displaying either of the aforementioned corrected version of the image wherein the error is at least partially concealed and a version of the image wherein the ancillary information is used to depict the errored pixel(s) such that provided-in-error pixels are readily distinguished from correctly-provided pixels.
摘要:
Embodiments include apparatus and methods to compensate for overshoot of a desired field of vision (FOV) by a remotely-controlled image capture device. The image capture device produces images associated with a plurality of FOVs, and transmits the images to a remote viewer terminal along with image identifiers (or FOV definitions for the images). The terminal receives and displays the images to a viewer. In response to viewer indications to pan or stop panning, the terminal sends pan and regress commands, respectively, to the image capture device. A regress command includes a reference to a selected FOV (e.g., an image identifier or an FOV definition). In response to receiving a regress command, the image capture device regresses to the selected FOV, and transmits additional images associated with the selected FOV to the terminal. The system also may include an intermediary device, which performs some of the functions associated with overshoot compensation.
摘要:
A video decoder system receives a user request for non-linear decoding of at least one video frame from a video stream encoded using an Intra macroblock refresh process. The request includes a first frame offset corresponding to a user requested first decoding frame within the video stream for commencing the non-linear decoding. The decoder system: determines an Intra-refresh period corresponding to at least one encoded Predictive frame in the video stream during which all macroblocks in the user requested first decoding frame are Intra encoded at least once; determines a second frame offset as a function of the Intra-refresh period and the user requested first frame offset, the second frame offset corresponding to a second decoding frame within the video stream. Finally, the decoder system decodes the video stream starting at the second decoding frame and suppresses the display of the video stream until the first decoding frame.
摘要:
A method and apparatus distributes video packets over multiple bearers for providing unequal packet loss protection. The method includes a packet processing function receiving a plurality of packets collectively comprising a flow of sequential data included in a sequence of media frames. For each packet, the packet processing function: applies a bearer selection process to select one of a plurality of bearers for transporting the packet over an access network, wherein each bearer has a different quality of service level which influences the probability of the transported packets being intentionally discarded by the access network, wherein the bearer selection process causes distribution of the plurality of packets across the plurality of bearers such that each bearer carries non-consecutive packets both within any given media frame and across sequential media frames and provides unequal packet loss protection for the packets in the plurality; and provides an indication of the selected bearer.
摘要:
A method and apparatus to provide a PTZ tour to a camera is provided herein. During operation, a processor extracts historical incident data and generates an incident heat map of an area based on the historical incident data. A camera viewshed is determined and utilized along with the incident heat map to generate a PTZ tour for a camera.
摘要:
Some embodiments are directed to methods and apparatuses for enabling voice discussions about a same data content being independently and simultaneously accessed on at least two devices. A server detects when a first device of the at least two devices accesses the data content. The server identifies and reserves an available voice communication group resource. Responsive to detecting that the at least two devices are independently and simultaneously accessing the data content, the server identifies and reserves an available voice communication group resource, and sends a voice group identifier for a reserved voice communication group resource to the at least two devices to allow access to the reserved voice communication group resource.
摘要:
A method and apparatus for granting wireless connection resources for a UE within a communication system is provided herein. During operation, an application requests allocation of wireless communication resources (a bearer reservation) to sustain transmission at a specified bit rate across the communication system via an admission control function. In response to the bearer reservation request, an admission control function calculates a wireless connection efficiency as a function of the requested bit rate and an amount of shared wireless connection resources required to sustain the requested bit rate given the current wireless connection quality associated with the UE. The wireless connection efficiency is then utilized to determine whether or not to admit the bearer reservation request.
摘要:
A digital image capture device streams captured images (e.g. low-resolution images) to a remote viewer terminal, along with image identifiers and/or device position information. The remote viewer terminal displays the images for viewing by a remote viewer. The remote viewer provides inputs to a user interface, which indicate a direction of desired movement of the image capture device, and/or that the remote viewer wants new images (e.g. high-resolution images) to be captured at a desired position. The user interface inputs are translated into requests, which are transmitted to the image capture device. The image capture device provides movement prompts that direct a device operator to move the device in a requested direction or toward a requested position. When a position of the device corresponds to a requested image capture position, the image capture device captures one or more new images, and transmits the new images to the remote viewer terminal.
摘要:
A policy enforcement device performs a method for adjusting video compression parameters for encoding source video based on a viewer's environment. The method includes: receiving, from a video receiving device, a video stream identifier indicating a video stream and a source of the video stream, wherein the video receiving device is remote from the source of the video stream; receiving an indication of environmental conditions of a viewer of the video stream using the video receiving device; determining a set of video compression parameters based on the indication of environmental conditions of the viewer; sending the set of video compression parameters to the identified source of the video stream to enable encoding of the video stream to a different compression level.