16 results about "Deblocking filter" patented technology

An encoder: includes circuitry, and memory coupled to the circuitry; stores a first parameter into a bitstream, the first parameter indicating whether a syntax element related to a chroma tool offset is present in the bitstream; when the first parameter indicates that the syntax element is present in the bitstream, (i) stores, in the bitstream, one or more second parameters that are used in deblocking filtering for a chroma sample of a current image, in addition to the syntax element, (ii) performs the deblocking filtering using the one or more second parameters, and (iii) encodes the current image; and when the first parameter indicates that the syntax element is not present in the bitstream, encodes the current image without storing the one or more second parameters into the bitstream.

DEPCT69 A filtering method that performs deblocking filter management within the boundaries between... An IPCM (IntraPulse Code Modulation) block and a non-IPCM block that are adjacent to each other, with... The first quantization parameter determination procedure (S401) performs the determination of the quantization parameters. The first-order TICE procedure for the non-IPCM block and the decision step determine the quantization parameters. The second step (S402) makes a decision to determine the second-order quantization parameters, supporting IPCM blocks and steps. At the decision-making stage, the filtering strength level (S403) was determined using the 1st quantization parameter as follows: The aforementioned second-order quantization parameters and the procedures for managing the removable filter are mentioned. Block (deblocking filter)(S404) at the said boundary, with the said filtering strength level. Included in the calculation;

The present application provides an image encoding apparatus and method, an image decoding apparatus and method, and a storage medium. In a prediction process, one of a first mode, a second mode, and a third mode can be used, the first mode is used to derive prediction pixels of a block using pixels in an image including the block, the second mode is used to derive prediction pixels of the block using pixels in an image different from the image including the block, and the third mode is used to generate prediction pixels of the block using both the pixels in the image including the block and the pixels in the image different from the image including the block. In a case where the third mode is used in at least one of a first block and a second block, an intensity of a deblocking filter process to be performed with respect to a boundary between the first block and the second block is set to an intensity same as in a case where the first mode is used in at least one of the first block and the second block.

This invention provides an image encoding apparatus and method, an image decoding apparatus and method, and a storage medium. In the prediction processing, one of a first mode, a second mode, and a third mode can be used. The first mode is used to derive predicted pixels for the block using pixels in an image that includes the block; the second mode is used to derive predicted pixels for the block using pixels in an image different from the image that includes the block; and the third mode is used to generate predicted pixels for the block using both pixels in the image that includes the block and pixels in an image different from the image that includes the block. When the third mode is used in at least one of the first and second blocks, the intensity of the deblocking filter processing to be performed on the boundary between the first and second blocks is set to the same intensity as when the first mode is used in at least one of the first and second blocks.

The present application provides an image encoding apparatus and method, an image decoding apparatus and method, and a storage medium. In a prediction process, one of a first mode, a second mode, and a third mode can be used, the first mode is used to derive prediction pixels of a block using pixels in an image including the block, the second mode is used to derive prediction pixels of the block using pixels in an image different from the image including the block, and the third mode is used to generate prediction pixels of the block using both the pixels in the image including the block and the pixels in the image different from the image including the block. In a case where the third mode is used in at least one of a first block and a second block, an intensity of a deblocking filter process to be performed with respect to a boundary between the first block and the second block is set to an intensity same as in a case where the first mode is used in at least one of the first block and the second block.

In a method for video decoding, an offset value in a look up table of a cross-component sample offset (CCSO) filter is determined based on first reconstructed samples in a filter chain after a deblocking filter in the filter chain is applied and before a constrained directional enhancement filter (CDEF) in the filter chain is applied. The offset value of the CCSO filter is applied to second reconstructed samples in the filter chain after the CDEF in the filter chain is applied.

DEPCT69 A filtering method that performs deblocking filter management within the boundaries between... An IPCM (IntraPulse Code Modulation) block and a non-IPCM block that are adjacent to each other, with... The first quantization parameter determination procedure (S401) performs the determination of the quantization parameters. The first-order TICE procedure for the non-IPCM block and the decision step determine the quantization parameters. The second step (S402) makes a decision to determine the second-order quantization parameters, supporting IPCM blocks and steps. At the decision-making stage, the filtering strength level (S403) was determined using the 1st quantization parameter as follows: The aforementioned second-order quantization parameters and the procedures for managing the removable filter are mentioned. Block (deblocking filter)(S404) at the said boundary, with the said filtering strength level. Included in the calculation;

The present application provides an image encoding apparatus and method, an image decoding apparatus and method, and a storage medium. In a prediction process, one of a first mode, a second mode, and a third mode can be used, the first mode is used to derive prediction pixels of a block using pixels in an image including the block, the second mode is used to derive prediction pixels of the block using pixels in an image different from the image including the block, and the third mode is used to generate prediction pixels of the block using both the pixels in the image including the block and the pixels in the image different from the image including the block. In a case where the third mode is used in at least one of a first block and a second block, an intensity of a deblocking filter process to be performed with respect to a boundary between the first block and the second block is set to an intensity same as in a case where the first mode is used in at least one of the first block and the second block.

A system and method for coding video in which deblocking artifacts are reduced by using modified filtering that is based, at least in part on pixel intensity associated with a coding unit, such that filtering levels are increased as pixel intensity increases. In some embodiments, an offset value or indicator of an offset value for parameters associated with deblocking filter parameters can be associated with a filtering level that is based at least in part on an intensity value.

The present application provides an image encoding apparatus and method, an image decoding apparatus and method, and a storage medium. In a prediction process, one of a first mode, a second mode, and a third mode can be used, the first mode is used to derive prediction pixels of a block using pixels in an image including the block, the second mode is used to derive prediction pixels of the block using pixels in an image different from the image including the block, and the third mode is used to generate prediction pixels of the block using both the pixels in the image including the block and the pixels in the image different from the image including the block. In a case where the third mode is used in at least one of a first block and a second block, an intensity of a deblocking filter process to be performed with respect to a boundary between the first block and the second block is set to an intensity same as in a case where the first mode is used in at least one of the first block and the second block.

An artificial intelligence (AI) encoding apparatus, including a memory configured to store instructions; and at least one processor configured to execute the instructions to: obtain an original image, previously-encoded frame information, and network environment information; obtain deblocking filter setting information, based on the original image, the previously-encoded frame information, and the network environment information; perform deblocking filtering to the original image, based on the deblocking filter setting information to obtain a deblocking-filtered original image; obtain an AI-downscaled first image by providing the deblocking-filtered original image a downscaling deep neural network (DNN); generate image data by performing first encoding on the AI-downscaled first image; and transmit the deblocking filter setting information, AI data including information related to the AI downscaling, and the image data.

The present application relates to a deblocking filter, a decoding device and a program product. A deblocking filter device of a first mode includes: a deblocking filter that performs a filtering process on a boundary of a first reconstructed block and a second reconstructed block adjacent to the first reconstructed block; and a filter control unit that controls a boundary filtering strength of the deblocking filter based on whether at least one of the first reconstructed block and the second reconstructed block is encoded using JCCR (Joint coding of chroma residual) that generates one joint prediction residual from prediction residuals of Cb color difference components and Cr color difference components respectively.

DEPCT69 A filtering method that performs deblocking filter management within the boundaries between... An IPCM (IntraPulse Code Modulation) block and a non-IPCM block that are adjacent to each other, with... The first quantization parameter determination procedure (S401) performs the determination of the quantization parameters. The first-order TICE procedure for the non-IPCM block and the decision step determine the quantization parameters. The second step (S402) makes a decision to determine the second-order quantization parameters, supporting IPCM blocks and steps. At the decision-making stage, the filtering strength level (S403) was determined using the 1st quantization parameter as follows: The aforementioned second-order quantization parameters and the procedures for managing the removable filter are mentioned. Block (deblocking filter)(S404) at the said boundary, with the said filtering strength level. Included in the calculation;