DIGITALINSIGHTS INC.

In a method and a device for encoding or decoding an image according to the present invention, motion information for bidirectional prediction of a current block may be derived on the basis of an inter mode previously defined in the device for encoding or decoding an image, and inter prediction may be performed on the current block on the basis of the motion information, wherein the motion information for bidirectional prediction is adjusted to be motion information for unidirectional prediction according to the predefined inter mode.

A method and an apparatus are disclosed for video coding utilizing prediction-transform skipping. In the disclosed embodiments, a video decoding device decodes a prediction skipping flag and a quantized transform block of the current block. The video decoding device inversely quantizes the quantized transform block to generate an inversely quantized transform block of the current block. When the prediction skipping flag is true, the video decoding device inversely transforms the inversely quantized transform block to generate a reconstructed block and stores the reconstructed block to filter the current picture and predict a next block.

A method and an apparatus for video coding using template matching-based intra prediction are disclosed. The video coding method and the video coding apparatus select an intra predictor by defining previously reconstructed pixels spatially adjacent to the current block as a template and performing a template matching-based search in the previously reconstructed region neighboring the current block.

A point cloud coding device and a method using a dead zone quantization scheme adaptively, when encoding attribute values of points in a point cloud, are disclosed. The point cloud coding device and method adjust the size of dead zones based on the impact of various characteristics of the points on the prediction performance with the attribute values.

A method and an apparatus for video coding using a matrix-based cross-component prediction are disclosed. The video coding method and apparatus predict a chroma component of a current block, by using a deep learning-based matrix operation, from a chroma component spatially adjacent to a chroma block of the current block and from a luma component spatially adjacent to a luma block corresponding to the chroma block.

A video decoding method performed by a video decoding apparatus includes decoding, from a bitstream, information associated with a neural-network-based filter, the information including a ratio between a size of an input picture to the neural-network-based filter and a size of an output picture from the neural-network-based filter. The method further includes generating a reconstructed picture by decoding the bitstream, and inputting the reconstructed picture into the neural-network-based filter to output a picture having a resolution different from that of the reconstructed picture.

Disclosed herein are an image decoding method, an image decoding apparatus, an image encoding method, an image encoding apparatus and a computer-readable recording medium. An image decoding method according to the present invention may include: decoding information on a prediction method of a current block; based on the information on the prediction method, determining a prediction method of the current block; and generating a prediction block of the current block by performing prediction for the current block based on the determined prediction method. Herein, the information on the prediction method of the current block may include at least one of information on subblock merge, information on MMVD, information on multi hypothesis prediction, and information on partition prediction.

An image encoding/decoding method and apparatus may reconstruct a current picture based on at least one of intra prediction and inter prediction, specify a block boundary to which a deblocking filter is applied in the reconstructed current picture, and apply a deblocking filter to a block boundary based on a filter type pre-defined in an encoding apparatus.

A method and an apparatus for video coding using template matching-based intra prediction are disclosed. The video coding method and the video coding apparatus select an intra predictor by defining previously reconstructed pixels spatially adjacent to the current block as a template and performing a template matching-based search in the previously reconstructed region neighboring the current block.

A video coding method and an apparatus using a spiral scan order are disclosed. The video coding method and the apparatus perform encode/decode target blocks in a spiral scan order for allowing the blocks located centrally of a video frame to make use of more previously reconstructed neighboring blocks.