Abstract: The present invention provides scanning mechanisms for imaging probes using for imaging mammalian tissues and structures using high resolution imaging, including high frequency ultrasound and/or optical coherence tomography. The imaging probes include adjustable rotational drive mechanism for imparting rotational motion to an imaging assembly containing either optical or ultrasound transducers which emit energy into the surrounding area. The imaging assembly includes a scanning mechanism having including a movable member configured to deliver the energy beam along a path out of said elongate hollow shaft at a variable angle with respect to said longitudinal axis to give forward and side viewing capability of the imaging assembly. The movable member is mounted in such a way that the variable angle is a function of the angular velocity of the imaging assembly.

Abstract: In a system for 360 degree video capture and playback, 360 degree video may be captured, stitched, encoded, decoded, rendered, and played-back. In one or more implementations, a stitching device may be configured to stitch the 360 degree video using an intermediate coordinate system between an input picture coordinate system and a capture coordinate system. In one or more implementations, the stitching device may be configured to stitch the 360 degree video into at least two different projection formats using a projection format decision, and an encoding device may be configured to encode the stitched 360 degree video with signaling that indicates the at least two different projection formats. In one or more implementations, the stitching device may be configured to stitch the 360 degree video with multiple viewing angles, and a rendering device may be configured to render the decoded bitstream using one or more suggested viewing angles.

Abstract: In a system for 360 degree video capture and playback, 360 degree video may be captured, stitched, encoded, decoded, rendered, and played-back. In one or more implementations, a decoding device receives a 360 degree video stream as input and decodes the 360 degree video stream, and a memory device stores the 360 degree video stream and viewing history data associated with the 360 degree video stream. A rendering device may render the decoded stream using view angles from the viewing history data. In one or more implementations, an object tracking device tracks one or more objects in the decoded 360 degree video stream and provides one or more tracking angles associated with the objects. The rendering device may render the decoded 360 degree video stream using the one or more tracking angles to keep at least one object in the 360 degree video stream for one or more rendered frames.

Abstract: The present invention provides scanning mechanisms for imaging probes using for imaging mammalian tissues and structures using high resolution imaging, including high frequency ultrasound and/or optical coherence tomography. The imaging probes include adjustable rotational drive mechanism for imparting rotational motion to an imaging assembly containing either optical or ultrasound transducers which emit energy into the surrounding area. The imaging assembly includes a scanning mechanism having including a movable member configured to deliver the energy beam along a path out of said elongate hollow shaft at a variable angle with respect to said longitudinal axis to give forward and side viewing capability of the imaging assembly. The movable member is mounted in such a way that the variable angle is a function of the angular velocity of the imaging assembly.

Abstract: The present invention provides scanning mechanisms for imaging probes using for imaging mammalian tissues and structures using high resolution imaging, including high frequency ultrasound and/or optical coherence tomography. The imaging probes include adjustable rotational drive mechanism for imparting rotational motion to an imaging assembly containing either optical or ultrasound transducers which emit energy into the surrounding area. The imaging assembly includes a scanning mechanism having including a movable member configured to deliver the energy beam along a path out of said elongate hollow shaft at a variable angle with respect to said longitudinal axis to give forward and side viewing capability of the imaging assembly. The movable member is mounted in such a way that the variable angle is a function of the angular velocity of the imaging assembly.

Abstract: Multi-mode error concealment, recovery and resilience coding. Adaptation of a number of coding units (CUs) employed in accordance with video coding may be made as a function of error. As a number of errors increases, the respective number of CUs may correspondingly increase (e.g., which may be made in accompaniment with a reduction of CU size). As a number of errors decreases, the respective number of CUs may correspondingly decrease (e.g., which may be made in accompaniment with an increase of CU size). Such errors may be associated with a type of source providing a video signal, a type of error resilience coding employed, communication link and/or channel conditions, a remote error characteristic (e.g., such as associated with a source device and/or destination device), a local error characteristic (e.g., such as associated with operations and/or processing within a given device), and/or any other type of consideration.

Abstract: In a system for 360 degree video capture and playback, 360 degree video may be captured, stitched, encoded, decoded, rendered, and played-back. In one or more implementations, a stitching device may be configured to stitch the 360 degree video using an intermediate coordinate system between an input picture coordinate system and a capture coordinate system. In one or more implementations, the stitching device may be configured to stitch the 360 degree video into at least two different projection formats using a projection format decision, and an encoding device may be configured to encode the stitched 360 degree video with signaling that indicates the at least two different projection formats. In one or more implementations, the stitching device may be configured to stitch the 360 degree video with multiple viewing angles, and a rendering device may be configured to render the decoded bitstream using one or more suggested viewing angles.

Abstract: In a system for 360 degree video capture and playback, 360 degree video may be captured, stitched, encoded, decoded, rendered, and played-back. In one or more implementations, a decoding device receives a 360 degree video stream as input and decodes the 360 degree video stream, and a memory device stores the 360 degree video stream and viewing history data associated with the 360 degree video stream. A rendering device may render the decoded stream using view angles from the viewing history data. In one or more implementations, an object tracking device tracks one or more objects in the decoded 360 degree video stream and provides one or more tracking angles associated with the objects. The rendering device may render the decoded 360 degree video stream using the one or more tracking angles to keep at least one object in the 360 degree video stream for one or more rendered frames.

Abstract: Within a device, one or more subsets associated with one or more frames or pictures of the video signal may be adaptively selected and used for motion vector calculation (e.g., such as in accordance with inter-prediction). For example, a picture or frame of the video signal may be partitioned into a number of respective regions. Any one or more, but typically fewer than all, of the respective regions of that picture or frame may be appropriately selected, and stored, based on any one or more considerations for use in motion vector calculation (e.g., inter-prediction). A sub-sampled or down-sampled picture or frame [or alternatively, a sub-sampled or down-sampled version of one or more respective regions of a picture or frame] (e.g., the sub-sampling or down-sampling ratio which may be adaptively determined based on any one or more considerations) may be stored for use in motion vector calculation (e.g., inter-prediction).

Abstract: In conventional packet communications systems, such as MPEG-2, the data stream includes a program clock reference (PCR) so that the receiver decoder can lock on to the data stream. The invention eliminates the need to send the PCR by transferring a data transport rate explicitly in the header of the data packets so that the decoder can use the transport rate as a locking reference and adjust its phase lock loop. The transport rate is carried in the adaptation field as user private data.

Abstract: The present invention provides scanning mechanisms for imaging probes using for imaging mammalian tissues and structures using high resolution imaging, including high frequency ultrasound and/or optical coherence tomography. The imaging probes include adjustable rotational drive mechanism for imparting rotational motion to an imaging assembly containing either optical or ultrasound transducers which emit energy into the surrounding area. The imaging assembly includes a scanning mechanism having including a movable member configured to deliver the energy beam along a path out of said elongate hollow shaft at a variable angle with respect to said longitudinal axis to give forward and side viewing capability of the imaging assembly. The movable member is mounted in such a way that the variable angle is a function of the angular velocity of the imaging assembly.

Abstract: Video coding sub-block sizing based on infrastructure capabilities and current conditions. Sub-block size, such as employed in accordance with the video processing, maybe adaptively modified based on any of a number of considerations. For example, such adaptation of sub-block size may be made with respect to one or more characteristics associated with streaming media source flow(s) and/or streaming media delivery flow(s) being received by and/or output from a given device including a video processor. For example, such a video processor may be a video decoder implemented within a middling or destination device. Such a video processor may be a video encoder implemented within the middling or source device. Adaptation of sub-block size employed in accordance with video coding may also be effectuated in accordance with feedback or control signaling provided between respective devices. (e.g., from destination or source device to middling device, or from destination device to source device, etc.).

Abstract: Aspects of a method and system for hierarchical motion estimation with multi-layer sub-pixel accuracy and motion vector smoothing are presented. Aspects of the system may include hierarchical motion vector computation that enables motion vectors to be computed at each level in the hierarchy based on a distinct pixel resolution level. A smoothing algorithm may be utilized to suppress spurious motion vector generation. The motion vectors computed at one level in the hierarchy may be utilized when computing motion vectors in a subsequent level. A bias value may be computed for each motion vector that provides an evaluation metric that may enable determination of whether the computed motion vector is to be utilized to enable generation of the interpolated image frame.

Abstract: The present invention provides scanning mechanisms for imaging probes using for imaging mammalian tissues and structures using high resolution imaging, including high frequency ultrasound and/or optical coherence tomography. The imaging probes include adjustable rotational drive mechanism for imparting rotational motion to an imaging assembly containing either optical or ultrasound transducers which emit energy into the surrounding area. The imaging assembly includes a scanning mechanism having including a movable member configured to deliver the energy beam along a path out of an elongate hollow shaft at a variable angle with respect to the longitudinal axis to give forward and side viewing capability of the imaging assembly. The movable member is mounted in such a way that the variable angle is a function of the angular velocity of the imaging assembly.

Abstract: Various methods and systems are provided for latency aware priority based decoding. In one embodiment, among others, a method includes providing coded frames of a first input stream to a multiple channel (multi-channel) decoder for decoding. A second input stream is obtained and a latency priority associated with the second input stream is determined. Coded frames from the first and second input streams are provided to the multi-channel decoder for decoding in an order based upon the latency priorities associated with the first and second input streams. In another embodiment, a multi-channel decoding system includes a multi-channel decoder configured to decode coded frames and a decoder input scheduler configured to provide coded frames from a plurality of input streams to the multi-channel decoder for decoding. The coded frames are provided to the multi-channel decoder in an order based at least in part upon latency priorities associated with the input streams.

Abstract: Signaling of prediction size unit in accordance with video coding. In accordance with video coding, various binarization may be performed. In accordance with coding related to different types of slices (e.g., I, P, B slices), one or more binary trees may be employed for performing various respective operations (e.g., coding unit (CU) prediction and prediction unit (PU) partition mode operations). In one implementation, a common or singular binary tree is employed to encode jointly CU prediction and PU partition mode in a single syntax element for both P slices and B slices. That is to say, in such an implementation, instead of employing different respective binary trees for at least these different respective processes/operations, a common or single binary tree may be employed for them both. Appropriate coordination between and encoder/transmitter device and a decoder/receiver device may be performed to ensure appropriate handling of different respective phases of video coding.

Abstract: Multi-mode error concealment, recovery and resilience coding. Adaptation of a number of coding units (CUs) employed in accordance with video coding may be made as a function of error. As a number of errors increases, the respective number of CUs may correspondingly increase (e.g., which may be made in accompaniment with a reduction of CU size). As a number of errors decreases, the respective number of CUs may correspondingly decrease (e.g., which may be made in accompaniment with an increase of CU size). Such errors may be associated with a type of source providing a video signal, a type of error resilience coding employed, communication link and/or channel conditions, a remote error characteristic (e.g., such as associated with a source device and/or destination device), a local error characteristic (e.g., such as associated with operations and/or processing within a given device), and/or any other type of consideration.

Abstract: Certain aspects of a method and system for motion-compensated picture rate up-conversion (PRUC) of digital video using picture boundary processing may include generating one or more forward motion vectors and one or more backward motion vectors based on extracted picture rate up-conversion (PRUC) data. A cost of performing motion estimation of a particular block along the generated forward motion vectors and the generated backward motion vectors corresponding to the particular block may be calculated. The particular block may be a boundary block. A motion vector with the least cost may be selected and motion compensated to generate a plurality of interpolated pictures.

Abstract: Unified binarization for CABAC/CAVLC entropy coding. Scalable entropy coding is implemented in accordance with any desired degree of complexity (e.g., entropy encoding and/or decoding). For example, appropriately implemented context-adaptive variable-length coding (CAVLC) and context-adaptive binary arithmetic coding (CABAC) allow for selective entropy coding in accordance with a number of different degrees of complexity. A given device may operate in accordance with a first level complexity a first time, a second level complexity of the second time, and so on. Appropriate coordination and signaling between an encoder/transmitter device and a decoder/receiver device allows for appropriate coordination along a desired degree of complexity.

Abstract: Multi-mode error concealment, recovery and resilience coding. Adaptation of a number of coding units (CUs) employed in accordance with video coding may be made as a function of error. As a number of errors increases, the respective number of CUs may correspondingly increase (e.g., which may be made in accompaniment with a reduction of CU size). As a number of errors decreases, the respective number of CUs may correspondingly decrease (e.g., which may be made in accompaniment with an increase of CU size). Such errors may be associated with a type of source providing a video signal, a type of error resilience coding employed, communication link and/or channel conditions, a remote error characteristic (e.g., such as associated with a source device and/or destination device), a local error characteristic (e.g., such as associated with operations and/or processing within a given device), and/or any other type of consideration.