Ningbo University

Alibaba (china) Co., Ltd.

Xiaodong Wang

Gangyi Jiang

Mei Yu

Fen Chen

Zongju Peng

Feng Shao

Fucui Li

Wenhui Yao

Junfeng Liu

Wujie Zhou

Chenyi You

A system for distributed storage includes a distributed file system for distributed storage of data, distributed metadata service nodes configured to run in different processes and configured to manage metadata of the data, in which the distributed metadata service nodes are configured with corresponding condition files, control nodes configured to compete for a permission to update the condition file to become a master control node, and obtain an operation permission on the data as the master control. The master control node is configured to utilize the operation on the data to control consistency of the condition files of the distributed metadata service nodes.

Distributed storage system, method, device, and storage medium for metadata management

A digital watermarking based method for objectively evaluating quality of stereo image includes: at transmitting terminal, extracting characteristics of the left-view image and the right-view image of an undistorted stereo image in DCT domain and embedding digital watermarking obtained by processing quantization coding on the characteristics into the DCT domain; at a receiving terminal, detecting the digital watermarking embedded in the distorted stereo image and processing decoding and inverse quantization to extract the embedded characteristics of the left-view image and the right-view image of the stereo image, obtaining a stereo perception value and a view quality value of the distorted stereo image according to the embedded characteristics, and finally obtaining an objective quality score of the distorted stereo image utilizing a support vector regression model.

Digital watermarking based method for objectively evaluating quality of stereo image

Growing community of inventors

Zhejiang, China

Xiaodong Wang