Patent classifications
H04N19/865
Scalable video coding using derivation of subblock subdivision for prediction from base layer
Scalable video coding is rendered more efficient by deriving/selecting a subblock subdivision to be used for enhancement layer prediction, among a set of possible subblock subdivisions of an enhancement layer block by evaluating the spatial variation of the base layer coding parameters over the base layer signal. By this measure, less of the signalization overhead has to be spent on signaling this subblock subdivision within the enhancement layer data stream, if any. The subblock subdivision thus selected may be used in predictively coding/decoding the enhancement layer signal.
Scalable video coding using subblock-based coding of transform coefficient blocks in the enhancement layer
A subblock-based coding of transform coefficient blocks of the enhancement layer is rendered more efficient. To this end, the subblock subdivision of the respective transform coefficient block is controlled on the basis of the base layer residual signal or the base layer signal. In particular, by exploiting the respective base layer hint, the subblocks may be made longer along a spatial frequency axis transverse to edge extensions observable from the base layer residual signal or the base layer signal.
Scalable video coding using inter-layer prediction of spatial intra prediction parameters
The coding efficiency of scalable video coding is increased by substituting missing spatial intra prediction parameter candidates in a spatial neighborhood of a current block of the enhancement layer by use of intra prediction parameters of a co-located block of the base layer signal. By this measure, the coding efficiency for coding the spatial intra prediction parameters is increased due to the improved prediction quality of the set of intra prediction parameters of the enhancement layer, or, more precisely stated, the increased likelihood, that appropriate predictors for the intra prediction parameters for an intra predicted block of the enhancement layer are available thereby increasing the likelihood that the signaling of the intra prediction parameter of the respective enhancement layer block may be performed, on average, with less bits.
Image Processing Method and Device
The present disclosure provides an image processing method and device, which are applied to the technical field of image processing, wherein the method comprises: dividing an infrared decompression image with block artifacts into image blocks distributed in a rectangular array; acquiring boundary gray information of the image blocks, and then determining boundary drop information of each image block and its adjacent image block, thereby obtaining drop information of the image block; constructing a constraint optimization objective function of the image based on the boundary drop information, the drop information and preset compensation information; determining a target compensation matrix according to the constraint optimization objective function, wherein each element value in the target compensation matrix is a target value of compensation information of an image block, the position of which in the image is the same as the position of the element value in the target compensation matrix.
Systems, Methods, And Apparatuses For Processing Video
Systems, methods, and apparatuses are described for processing video. A method may comprise receiving video content comprising a plurality of frames and determining a splitting parameter of a partitioning of at least a portion of a first frame of the plurality of frames. Deblock filtering may be implemented on at least the first frame of the plurality of frames based at least on the splitting parameter.
Directed interpolation and data post-processing
An encoding device evaluates a plurality of processing and/or post-processing algorithms and/or methods to be applied to a video stream, and signals a selected method, algorithm, class or category of methods/algorithms either in an encoded bitstream or as side information related to the encoded bitstream. A decoding device or post-processor utilizes the signaled algorithm or selects an algorithm/method based on the signaled method or algorithm. The selection is based, for example, on availability of the algorithm/method at the decoder/post-processor and/or cost of implementation. The video stream may comprise, for example, downsampled multiplexed stereoscopic images and the selected algorithm may include any of upconversion and/or error correction techniques that contribute to a restoration of the downsampled images.
Method and system of reducing block boundary artifacts in digital image processing
In one aspect, a computerized method includes the step of obtaining an original digital image to scrambled. The computerized method includes the step of creating a copy of the digital image. The computerized method includes the step of delineating a first pixel-box grid on the digital image. The computerized method includes the step of delineate a second pixel-box grid on the copy of the digital image. The computerized method includes the step of joining the original digital image and the copy of the digital image. The he first pixel-box grid of the original digital image and of the second pixel-box grid are offset by a specified number of pixels; and scrambling the first pixel-box grid of the original digital image and of the second pixel-box grid of the copy of the digital image into an encoded digital image.
RESTORATION IN VIDEO CODING USING FILTERING AND SUBSPACE PROJECTION
A method includes generating, using first restoration parameters, a first guide tile for a degraded tile of the degraded frame, the degraded tile corresponding to a source tile of the source frame; generating, using second restoration parameters, a second guide tile for the degraded tile of the degraded frame, the second restoration parameters being different from the first restoration parameters; determining a first tile difference between the source tile and the first guide tile; determining a second tile difference between the source tile and the second guide tile; calculating projection parameters that minimize a difference between a restored tile of the degraded tile and the source tile; and encoding, in an encoded bitstream, the projection parameters. The difference between the restored tile of the degraded tile and the source tile is a linear combination, using the projection parameters, of the first tile difference and the second tile difference.
MEMORY HAVING MEMORY CELL STRING AND COUPLING COMPONENTS
Some embodiments include apparatuses and methods having a conductive line, a memory cell string including memory cells located in different levels the apparatus, and a select circuit including a select transistor and a coupling component coupled between the conductive line and the memory cell string. Other embodiments including additional apparatuses and methods are described.
SCALABLE VIDEO CODING USING INTER-LAYER PREDICTION CONTRIBUTION TO ENHANCEMENT LAYER PREDICTION
A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.