Abstract: A method of memory-efficient prediction mode selection includes receiving, by an encoder, a coded bitstream including a current frame, determining, by the encoder, costs of a first prediction mode and a second prediction mode, wherein determining further comprises determining, for the first prediction mode, a first bit cost and a first memory cost and determining, for the second prediction mode, a second bit cost and a second memory cost, selecting, by the encoder, a current prediction mode of the first prediction mode and the second prediction mode as a function of the first bit cost, first memory cost, second bit cost, and second memory cost, and encoding, by the encoder, the current frame using the current prediction mode. The prediction mode may be informed by at least one parameter received from the decoder.

Abstract: A method of decoder-side synthesis of video sequences includes receiving, by an encoder, an input video, detecting, by the encoder and in the input video, a first region including synthesizable content, and encoding, by the encoder and in a bitstream, the video, wherein encoding further comprises signaling the first region.

Abstract: A video encoder is configured to encode a bitstream to be decoded by a compliant decoder receiving the bistream. The bitstream including a first coded picture having a first resolution and a second coded picture having a second resolution, wherein the first coded picture is an intra-coded picture, parameters defining a cropping window. The decoder decodes the first coded picture and stores the first picture as a reference picture, determines a scaling factor from at least one parameter in the bitstream defining the first cropping window, determines a predictor for the second picture from the reference picture and the scaling factor, decodes the second coded picture using the predictor, and outputs for display the first picture as cropped in accordance with the parameters defining the cropping window.

Abstract: A system for organizing and searching a video database includes a logic circuit configured to extract, from a video, at least a video feature, generate at least a first hash value as a function of the at least a video feature, wherein generating the at least a first hash value further comprises performing a robust hash algorithm on the at least a feature, and store the video in a data structure, wherein storing the video further includes storing a representation of the video in a leaf node of the data structure and storing the at least a first hash value in a traversal index linking hash values to leaf nodes.

Abstract: A video encoder encodes a bitstream for decoding by a compliant decoder which is configured to selectively operate in a mode for generating a motion compensation predictor from a reference picture for a subsequent picture having a resolution different from the reference picture. The encoded bitstream includes a coded picture having a first coded region and a second coded region and signaling information from which the decoder determines first and second spatial resolution scale factors for reconstructing the first and second regions.

Abstract: Methods and systems for hybrid feature video bitstream encoding and decoding are provided. Encoding can be performed in one of a plurality of modes. In one mode, the video components of the encoded bitstream include residual data generated encoding the difference between feature data and input video data. A compatible decoder can operate in a plurality of decoding modes. In one decoding mode, the video components are decoded using the encoded video and encoded feature data in the bitstream. The hybrid bitstream between the encoder and decoder is formed with a plurality of hybrid segments, each having a plurality of components specifying characteristics the feature and video content of the segment.

Abstract: A video coding for machines (VCM) encoder for combined lossless and lossy encoding includes a feature encoder, the feature encoder configured to encode a sub-picture containing a feature in an input video and provide an indication of the sub-picture, and a video encoder, the video encoder configured to receive an indication of the sub-picture from the feature encoder and encode the sub-picture using a lossy encoding protocol.

Abstract: A video coding for machines (VCM) encoder includes a first video encoder, the first video encoder configured to encode an input video into a bitstream. The VCM encoder includes a feature extractor, the feature extractor configured to detect at least a feature in the input video. The VCM encoder includes a second encoder, the second encoder configured to encode a feature bitstream as a function of the input video and at least a feature.

Abstract: A method includes receiving a bit stream; determining, using the bit stream, whether an adaptive resolution management mode is enabled; determining, using the bit stream, a scaling factor including a vertical scaling constant component and a horizontal scaling constant component; and reconstructing pixel data of a current block in adaptive resolution management mode and using the determined scaling factor, the reconstructing including scaling the current block horizontally by the horizontal scaling constant component and scaling the current block vertically by the vertical scaling constant component. Related apparatus, systems, techniques and articles are also described.

Abstract: A decoder includes circuitry configured to receive a bitstream identify, in the bitstream, a current frame, wherein the current frame includes a plurality of regions, detect, in the bitstream, an indication that a first region is encoded according to a lossless encoding protocol and another region is encoded according to a lossy encoding protocol, and decode the current frame, wherein decoding the current frame further comprises decoding the first region using a lossless decoding protocol corresponding to the lossless encoding protocol.

Abstract: A video encoder is configured to encode a bit stream including a coded picture having a first contiguous region and a second contiguous region, the first contiguous region containing common motion, the second contiguous region containing local motion. The encoded bitstream is provided to a decoder which is configured to decode the first contiguous region of the coded picture to reconstruct the common motion by utilizing a motion model common to all of the coding blocks in the first region. A merge candidate list is selectively created and a merge candidate is selected to decode the first region based on the common motion model. The second contiguous region is decoded using individual motion information for each coding block in the second contiguous region.

Abstract: An encoder is configured to generate an encoded bitstream that can be decoded by a decoder that is configured to receive a bitstream. The bitstream includes a picture comprising a first contiguous region of a first plurality of coding blocks and a second contiguous region comprising a second plurality of coding blocks. The first plurality of blocks having a common motion model used to decode each of the blocks of the first region and the second plurality of blocks having local motion.

Abstract: An encoder includes circuitry configured to receive an input video, select a current frame identify a first sub-picture of the current frame to be encoded using a lossless encoding protocol, and encode the current frame, wherein encoding the current frame includes encoding the first sub-picture using the lossless encoding protocol.

Abstract: Computer readable medium stores a bitstream which is decodable by a decoder that is f configured to receive a bitstream, extract a header including a list of reference frames available for motion compensation, such as global motion compensation, determine, using the header, a motion model for a current block, the motion relative to a reference frame contained in the list of reference frames, and decode the current block using the motion model. Related apparatus, systems, techniques and articles are also described.

Abstract: A decoder includes circuitry configured to receive a bitstream, extract a header, determine, using the header, a global motion model, and decode a current block of a current frame using the global motion model. Related apparatus, systems, techniques and articles are also described.

Abstract: A video encoder is configured to generate a bitstream for decoding by a compatible decoder which includes circuitry configured to receive a bitstream, extract a residual of a control point motion vector for a current frame and from the bitstream, and combine the residual of the control point motion vector with a prediction of the control point motion vector for the current frame.

Abstract: A decoder includes circuitry configured to receive a bitstream; determine, for a current block and using the bitstream, a global motion vector candidate utilized by an adjacent block; construct a motion vector candidate list including adding the determined global motion vector candidate to the motion vector candidate list; and reconstruct pixel data of the current block and using the motion vector candidate list. Related apparatus, systems, techniques and articles are also described.

Abstract: An encoder includes circuitry configured to receive a video, determine a plurality of long-term reference frames, determine a long-term reference retention time, and encode the video into a bitstream including the determined plurality of long-term reference fames and the determined retention time. A decoded picture buffer for retaining a plurality of reconstructed pictures, including a long term reference picture, is also provided.

Abstract: A decoder includes circuitry configured to receive a bitstream, extract a header associated with a current frame and including a signal characterizing that global motion is enabled and further characterizing parameters of a global motion model, and decoding the current frame, the decoding including using a motion model for each current block having a complexity that is less than or equal to a complexity of the global motion model. Related apparatus, systems, techniques, and articles are also described.

Abstract: A video decoder is configured to receive a bitstream including a first coded picture having a first resolution and a second coded picture having a second resolution, wherein the first coded picture is an intra-coded picture, parameters defining a cropping window. The decoder decodes the first coded picture and stores the first picture as a reference picture, determines a scaling factor from at least one parameter in the bitstream defining the first cropping window, determines a predictor for the second picture from the reference picture and the scaling factor, decodes the second coded picture using the predictor, and outputs for display the first picture as cropped in accordance with the parameters defining the cropping window.