Lifetech Scientific (shenzhen) Co., Ltd

Zte Corporation

Ubtech Robotics Corp Ltd

Da Li

Benhao Xiao

Caiping Liu

Youjun Xiong

Feng Gao

Zheng Xie

Xue Yang

Youpeng Li

Xinshui Huang

Meichun Liu

Tao Xu

Yiping Li

Gengmao Sun

Qidong Xu

Huaqiang Lu

Qiuhong Shi

Sixin Li

Jingyuan Li

Zhibin Pan

Jian Hui

Feifei He

A stent graft comprises a plurality of wavy rings sequentially arranged in a spaced manner, and membranes fixed to the plurality of wavy rings, wherein the stent graft comprises, in a circumferential direction, at least one keel region and a non-keel region connected to the keel region, the keel region having an axial shortening rate that is less than that of the non-keel region, and the axial shortening rate of the keel region is 10-40%. The stent graft can be bent in all directions, and the keel region on the stent graft can provide a sufficient amount of an axial support force for the stent.

Covered stent

Robot

A device for compressing vertex data in three-dimensional (3D) image data includes a codebook design module and a codeword search module. The codebook design module is configured for: grouping residual vectors of vertices in 3D image data for codebook design; generating, for each group of residual vectors, a sub-codebook formed by a specified number of codewords; and sending the generated sub-codebook corresponding to a group of residual vectors to the codeword search module. The codeword search module is configured for: receiving a sub-codebook sent by the codebook design module; searching for a codeword of optimal match of a to-be-compressed residual vector of a vertex in 3D image data to be compressed; and taking an index of the codeword of optimal match and an index of a sub-codebook where the codeword of optimal match is located as compressed data of the vertex. A method for compressing vertex data in 3D image data is further disclosed. With the disclosure, it is possible to save codeword storage space, enhance encoding quality, improve a compression ratio of vertex data, and increase a compression efficiency.

Method and device for compressing vertex data in three-dimensional image data

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Shenzhen, China

Da Li