Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Hui Yuan

Ming Li

Lu Wang

Xiaohui Wang

Qi Liu

Congrui Fu

Yao Liu

Ye Yang

The present disclosure provides a point cloud encoding method and system, a point cloud decoding method and system, a point cloud encoder, and a point cloud decoder. A prediction mode of attribute information of a current point is determined through geometric information of a point in a point cloud, so that a determination process of the prediction mode is decoupled from a reconstruction process of the attribute information of the point in the point cloud, the two processes can be performed in parallel, and thus the efficiency of encoding and decoding is improved.

Point cloud encoding method and system, point cloud decoding method and system, point cloud encoder, and point cloud decoder

A decoder decodes a bitstream of a video and determines decoding parameters of a current picture in the video; determines, according to the decoding parameters of the current picture, reconstructed data of a second picture component of the current picture based on the reconstructed data of the first picture component by using a prediction model; determines decoded data based on the reconstructed data of the first picture component and the reconstructed data of the second picture component. An encoder determines identification information of a current picture in a video; codes reconstructed data of a first picture component; the encoder skips encoding of the reconstructed data of the second picture component, in response to the identification information indicating using the prediction model for determining the reconstructed data of the second picture component; and signals coded bits into a bitstream of the video.

Encoding method, decoding method, encoder, decoder and storage medium

A point cloud encoding method, including: obtaining attribute information about the attributes of a current point in a point cloud; processing the attribute information of the current point to obtain a residual value of the attribute information of the current point; using a target quantization manner, quantizing the residual value of the attribute information of the current point to obtain a quantized residual value of the attribute information of the current point; the target quantization manner comprises at least two of the following quantization manners: a first quantization manner, a second quantization manner, and a third quantization manner.

Point cloud encoding and decoding method and system, and point cloud encoder and point cloud decoder

A point cloud coding method, including: partitioning a point cloud, and determining a current coding block; determining a quantization parameter optimization enable identifier, a hierarchical level index, and a quantization parameter offset parameter of the current coding block; determining, according to the hierarchical level index and the quantization parameter offset parameter, a quantization step Qstep corresponding to a level of detail; and upon detecting that the quantization parameter optimization enable identifier is a first value, performing operations for one or more points included in the current coding block.

Point cloud coding method, point cloud decoding method, and relevant apparatuses

Provided are a point cloud encoding method and decoding method, and an encoder and a decoder. The encoding method comprises: processing attribute information of a target point in a point cloud, so as to obtain a predicted residual of the attribute information of the target point; quantizing the predicted residual on the basis of a quantized weight of the target point and a quantized stride of the target point, so as to obtain a quantized residual of the attribute information of the target point, wherein the quantized weight of the target point is the weight used when weighting the quantized stride of the target point; and encoding the quantized residual, so as to obtain a code stream.

Point cloud encoding method and decoding method, and encoder and decoder

Disclosed are a video processing method and apparatus, and a device, a decoder, a system and a storage medium, applied to a video device. The method comprises: obtaining a video sequence of a first resolution, the video sequence comprising at least one video frame; and inputting the video sequence into a super-resolution network model to obtain a target video sequence of a second resolution, wherein the super-resolution network model at least comprises a first sub-network model and a second sub-network model, the first sub-network model is used for improving the resolution of the video sequence, and the second sub-network model is used for improving the quality of at least one image frame in the output result of the first sub-network model.

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Dongguan, China

Hui Yuan