Abstract: A method for luma-based chroma intra-prediction in a video encoder or a video decoder is provided that includes down sampling a first reconstructed luma block of a largest coding unit (LCU), computing parameters ? and ? of a linear model using immediate top neighboring reconstructed luma samples and left neighboring reconstructed luma samples of the first reconstructed luma block and reconstructed neighboring chroma samples of a chroma block corresponding to the first reconstructed luma block, wherein the linear model is PredC[x,y]=?·RecL?[x,y]+?, wherein x and y are sample coordinates, PredC is predicted chroma samples, and RecL? is samples of the down sampled first reconstructed luma block, and wherein the immediate top neighboring reconstructed luma samples are the only top neighboring reconstructed luma samples used, and computing samples of a first predicted chroma block from corresponding samples of the down sampled first reconstructed luma block using the linear model and the parameters.

Abstract: One example method of video processing includes implementing, by a processor, a decoder-side motion vector derivation (DMVD) scheme for motion vector refinement during a conversion between a current video block and a bitstream representation of the current video block by deriving parameters based on a deriving rule. The conversion may include compressing the current video block into the bitstream representation or uncompressing the bitstream representation into pixel values of the current video block.

Abstract: The present disclosure provides method and apparatus for motion field storage in video coding. An exemplary method includes: determining whether a first uni-prediction motion vector for a first partition of a block and a second uni-prediction motion vector for a second partition of the block are from a same reference picture list; and in response to the first uni-prediction motion vector and the second uni-prediction motion vector being determined to be from the same reference picture list, storing, in a motion field of the block, one of the first uni-prediction motion vector and the second uni-prediction motion vector for a subblock located in a bi-predicted area of the block.

Abstract: The present invention is a computer implemented method for projecting an image, comprising: providing an electronic device, wherein the electronic device has an image sensing component, a processing component, and a projecting component; capturing, by one or more processors, at least one image of an environment within the visible space of the projecting component of the electronic device; generating, by one or more processors, a depth map of the visible space of the environment; selecting, by one or more processors, an image to be projected on a portion of the visible space; altering, by one or more processors, the image based on the generated depth map of the visible space relative to the selected portion of the visible space; and projecting, by one or more processors, the image on the portion of the visible space.

Abstract: The present invention relates to an intra prediction mode mapping method and a device using the method. The intra prediction mode includes: decoding flag information providing information regarding whether an intra prediction mode of a plurality of candidate intra prediction modes for the current block is the same as the intra prediction mode for the current block, and decoding a syntax component including information regarding the intra prediction mode for the current block in order to induce the intra prediction mode for the current block if the intra prediction mode from among the plurality of candidate intra prediction modes for the current block is not the same as the intra prediction mode for the current block. Thus, it is possible to increase the efficiency with which are images are decoded.

Abstract: There are provided mechanisms of guided transcoding. The methods are performed by a decoder, for producing original transform coefficients, and by an encoder, for producing coded delta transform coefficients. A decoding method comprises deriving a predicted residual block. The decoding method comprises transforming the predicted residual block using a forward transform, thereby producing a plurality of original estimated coefficients, the plurality of OECs comprising a first OEC. The decoding method comprises quantizing the plurality of OECs, thereby producing a plurality of quantized estimated transform coefficients comprising a first ETC corresponding to the first OEC. The decoding method comprises selecting a category based on the first OEC. The decoding method comprises decoding a first coded delta transform coefficient (DTC) corresponding to the first OEC, thereby producing a first decoded DTC, wherein the decoding comprises using the selected category to decode the first coded DTC.

Abstract: The present technique relates to an image processing device and method capable of suppressing a decrease in encoding efficiency. The image processing device includes: a predictive vector generating unit that generates a predictive vector of a current parallax vector of a current block used in prediction using correlation in a parallax direction using a reference parallax vector referred when generating a predictive motion vector, when encoding the current parallax vector; and a difference vector generating unit that generates a difference vector between the current parallax vector and the predictive vector generated by the predictive vector generating unit. The present disclosure can be applied to an image processing device.

Abstract: Techniques are disclosed relating to data compression. In some embodiments, compression circuitry determines, at least partially in parallel for multiple different lossless compression techniques, a number of bits needed to represent a least compressible pixel, using that technique, in a set of pixels being compressed. The compression techniques may include neighbor, origin, and gradient techniques, for example. The compression circuitry may select one of the compression techniques based on the determined numbers of bits for the multiple compression techniques and corresponding header sizes. In some embodiments, the compression circuitry determines, for multiple regions of pixels in the set of pixels, for ones of the compression techniques, a region number of bits needed to represent a least compressible pixel, using that technique. The selection of a compression technique may be further based on region numbers of bits.

Abstract: A process for determining the selection of filters and input samples is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to improve quality in Scalable High Efficiency Video Coding (SHVC). In order to accommodate other applications such as interlace/progressive scalability and to increase the resolution of the alignment between layers, it is proposed that the phase offset adjustment parameters be signaled.

Abstract: A method and apparatus for generating a merge candidate list for encoding or decoding of a video sequence includes determining a first candidate block that includes a vertical position above a top edge of a current block, and that includes a horizontal position adjacent to a horizontal center of the current block. A second candidate block is determined that includes a horizontal position that is located to a left side of a left edge of the current block and a vertical position adjacent to a vertical center of the current block. The merge candidate list is generated using the first candidate block and the second candidate block to permit the encoding or the decoding of the video sequence.

Abstract: An encoder (100) that encodes an image on a per block basis includes circuitry and memory. Using the memory, the circuitry: performs first partitioning of dividing the image using a square block having a fixed block size, to generate the image into a plurality of blocks including the square block which has the fixed block size and a first non-square block which has a size smaller than the fixed block size; performs second partitioning on the plurality of blocks; adds information on the second partitioning into a bitstream; and prohibits a quad tree splitting of the first non-square block in the second partitioning.

Abstract: The invention proposes a method and a device for arithmetic encoding of a current spectral coefficient using preceding spectral coefficients. The preceding spectral coefficients are already encoded, and both the preceding and current spectral coefficients are comprised in one or more quantized spectra resulting from quantizing a time-frequency-transform of video, audio or speech signal sample values.

Abstract: A private video surveillance service shares an image stream through an asset lock with government agencies in the event of emergency. Nominated agencies establish access credentials at the surveillance service data center. A camera is shared by a facility administrator's selection of permissions on each camera via privileged web-browser or mobile device. Permissions enable selection by static meta data such as type, audio, location, motion, recognition, PTZR, spectrum, and epoch. Video streams of present and past epochs are controlled by ranges of time. A government agency receives an electronic notification from the administrator to operate an agency dedicated application programming interface. A notification may be customized for each responding agency and each event by dynamically generating a link to a secure webserver which records geo-location or network identifiers for validation. Video servers remain controlled by the facility administrator.

Abstract: Aspects of the disclosure provide an apparatus that includes processing circuitry and a method for video decoding. The processing circuitry decodes coding information of a block to be reconstructed from a coded video bitstream. The coding information indicates intra prediction information for the block. For the block coded with a directional mode, the processing circuitry determines the directional mode based on a nominal mode and an angular offset. The coding information indicates the nominal mode and the angular offset. The processing circuitry determines a non-separable transform for the block based on the nominal mode, and reconstructs the block based on the directional mode and the non-separable transform. In an example, the processing circuitry determines a transform set mode that is associated with the nominal mode, and the transform set mode indicates a set of one or more non-separable transforms that includes the non-separable transform.

Abstract: A method of coding implemented by a decoding device or encoding device, the method comprising obtaining a bitstream, the bitstream comprises a transform unit syntax; the syntax comprises at least two cbf flags for chroma blocks (in an example, transform unit syntax correspond to either transform unit or sub-transform units which include two chroma cbf flags: tu_cbf_cb and tu_cbf_cb—one flag for each chroma plane), a chroma cbf flag specifies whether certain block has residue in correspondent color plane; deriving a value of a luma cbf flag tu_cbf_luma based on one or any combination of a value of a cu_cbf flag, values of two chroma cbf flags corresponding to a current transform unit or sub-transform unit, location of the sub-transform unit within transform unit, values of luma and chroma cbf flags correspondent to previous sub-transform units in the current transform unit.

Abstract: Methods and systems for operating a moving platform to determine an identity of an unidentified target are disclosed. In an example method to determine the identity of the unidentified target, a first moving platform, configured with a first type of sensor, is caused to move to an area associated with the target. An attempt is made to determine, via the first moving platform and the first type of sensor, the identity of the target. Based on the attempt, a second moving platform, configured with a second type of sensor, is caused to move to the area. The identity of the target is determined via the second moving platform and the second type of sensor.

Abstract: There is provided an information processing apparatus to realize communication between users via a network in a more favorable manner, the information processing apparatus including: a communication unit configured to perform communication with an external device via a predetermined network and a control unit configured to perform control regarding presentation of a second image to a second user, the second image being generated by applying image processing based on first setting associated with a first user and second setting associated with the second user to a first image associated with the first user.

Abstract: Method, systems, and apparatuses are described that transmit and/or receive video content. A request associated with an output device may be received. Based on the request and a mode of operation of the output device, a first data stream of a plurality of data streams is determined. Each of the plurality of data streams may be associated with a different adjusted version of video content that may be multidimensional and/or multi-perspective video content. Based on the first data stream, a first adjusted version of the video content may be determined. The output device may output the first adjusted version.

Abstract: The present disclosure relates to motion vector determination using template or bilateral matching and predictor generation based on the motion vector. The template or bilateral matching and/or the predictor generation use interpolation filtering. The interpolation filtering operation accesses integer sample positions within a window, and further uses padded sample values for integer sample positions outside the window, which are based on at least one sample within said window, and uses the accessed integer sample position values as well as the padded sample values to perform the template or bilateral matching and/or predictor generation.

Abstract: An image decoding method performed by a decoding device according to the present invention comprises the steps of: acquiring information on inter prediction of a target block through a bit stream; deriving motion information of the target block on the basis of the information on inter prediction; deriving a prediction sample by performing inter prediction for the target block on the basis of the motion information; generating a reconstruction block on the basis of the prediction sample; deriving modified motion information of the target block on the basis of the reconstruction block; and updating the motion information of the target block on the basis of the modified motion information. According to the present invention, modified motion information of the target block can be calculated, and the motion information of the target block can be updated on the basis of the modified motion information, so that the overall coding efficiency can be improved.