Patents by Inventor Wenrui Dai
Wenrui Dai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240029204Abstract: An image processing method for sparse image reconstruction, image denoising, compressed sensing image reconstruction or image restoration, comprising: establishing a general linear optimization inverse problem under the 1-norm constraint of a sparse signal; establishing a differentiable deep network model based on convex combination to solve the problem on the basis of standard or learned iterative soft shrinkage thresholding algorithm; and introducing a deep neural network of arbitrary structure into the solving step to accelerate the solving step and reducing a number of iterations needed to reach a convergence. The present disclosure combines the traditional iterative optimization algorithm with the deep neural network of arbitrary structure to improve the image reconstruction performance and ensure fast convergence to meet the current needs of sparse image reconstruction.Type: ApplicationFiled: September 22, 2023Publication date: January 25, 2024Applicant: SHANGHAI JIAO TONG UNIVERSITYInventors: Wenrui DAI, Ziyang ZHENG, Chenglin LI, Junni ZOU, Hongkai XIONG
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Patent number: 11836954Abstract: In a 3D point cloud compression system based on multi-scale structured dictionary learning, a point cloud data partition module outputs a voxel set and a set of blocks of voxels of different scales. A geometric information encoding module outputs an encoded geometric information bit stream. A geometric information decoding module outputs decoded geometric information. An attribute signal encoding module outputs a sparse coding coefficient matrix and a learned multi-scale structured dictionary. An attribute signal compression module outputs a compressed attribute signal bit stream. An attribute signal decoding module outputs decoded attribute signals. A 3D point cloud reconstruction module completes reconstruction. The system is applicable to lossless geometric and lossy attribute compression of point cloud signals.Type: GrantFiled: March 13, 2023Date of Patent: December 5, 2023Assignee: SHANGHAI JIAO TONG UNIVERSITYInventors: Wenrui Dai, Yangmei Shen, Chenglin Li, Junni Zou, Hongkai Xiong
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Patent number: 11823432Abstract: The present disclosure provides a saliency prediction method and system for a 360-degree image based on a graph convolutional neural network. The method includes: firstly, constructing a spherical graph signal of an image of an equidistant rectangular projection format by using a geodesic icosahedron composition method; then inputting the spherical graph signal into the proposed graph convolutional neural network for feature extraction and generation of a spherical saliency graph signal; and then reconstructing the spherical saliency graph signal into a saliency map of an equidistant rectangular projection format by using a proposed spherical crown based interpolation algorithm. The present disclosure further proposes a KL divergence loss function with sparse consistency. The method can achieve excellent saliency prediction performance subjectively and objectively, and is superior to an existing method in computational complexity.Type: GrantFiled: February 5, 2023Date of Patent: November 21, 2023Assignee: SHANGHAI JIAO TONG UNIVERSITYInventors: Chenglin Li, Haoran Lv, Qin Yang, Junni Zou, Wenrui Dai, Hongkai Xiong
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Publication number: 20230245419Abstract: The present disclosure provides a saliency prediction method and system for a 360-degree image based on a graph convolutional neural network. The method includes: firstly, constructing a spherical graph signal of an image of an equidistant rectangular projection format by using a geodesic icosahedron composition method; then inputting the spherical graph signal into the proposed graph convolutional neural network for feature extraction and generation of a spherical saliency graph signal; and then reconstructing the spherical saliency graph signal into a saliency map of an equidistant rectangular projection format by using a proposed spherical crown based interpolation algorithm. The present disclosure further proposes a KL divergence loss function with sparse consistency. The method can achieve excellent saliency prediction performance subjectively and objectively, and is superior to an existing method in computational complexity.Type: ApplicationFiled: February 5, 2023Publication date: August 3, 2023Applicant: SHANGHAI JIAO TONG UNIVERSITYInventors: Chenglin LI, Haoran LV, Qin YANG, Junni ZOU, Wenrui DAI, Hongkai XIONG
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Publication number: 20230215055Abstract: In a 3D point cloud compression system based on multi-scale structured dictionary learning, a point cloud data partition module outputs a voxel set and a set of blocks of voxels of different scales. A geometric information encoding module outputs an encoded geometric information bit stream. A geometric information decoding module outputs decoded geometric information. An attribute signal encoding module outputs a sparse coding coefficient matrix and a learned multi-scale structured dictionary. An attribute signal compression module outputs a compressed attribute signal bit stream. An attribute signal decoding module outputs decoded attribute signals. A 3D point cloud reconstruction module completes reconstruction. The system is applicable to lossless geometric and lossy attribute compression of point cloud signals.Type: ApplicationFiled: March 13, 2023Publication date: July 6, 2023Applicant: SHANGHAI JIAO TONG UNIVERSITYInventors: Wenrui DAI, Yangmei SHEN, Chenglin LI, Junni ZOU, Hongkai XIONG
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Publication number: 20160037888Abstract: A hair styling device is described that has a handle, an elongated, substantially cylindrical, heatable rod providing a curling surface and supported by the handle, a heater for heating the curling surface, a support spaced apart from the curling surface, and a rotatable member rotatable relative to the curling surface for wrapping hair around and in contact with the curling surface. The device has an opening in the rotatable member for receiving a section of a user's hair, a motor for rotating the rotatable member, and a flexible, heat-resistant clamp supported by the support and extending from the support toward the curling surface for clamping hair against the curling surface.Type: ApplicationFiled: October 19, 2015Publication date: February 11, 2016Inventors: David Richmond, Howard Richmond, Michael A. Ragosta, Zhiyong Yu, Zhiwu Yu, Rentong Wang, Wenrui Dai
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Patent number: 9185957Abstract: A hair styling device is described that has a handle, an elongated, substantially cylindrical, heatable rod providing a curling surface and supported by the handle, a heater for heating the curling surface, a support spaced apart from the curling surface, and a rotatable member rotatable relative to the curling surface for wrapping hair around and in contact with the curling surface. The device has an opening in the rotatable member for receiving a section of a user's hair, a motor for rotating the rotatable member, and a flexible, heat-resistant clamp supported by the support and extending from the support toward the curling surface for clamping hair against the curling surface.Type: GrantFiled: June 13, 2014Date of Patent: November 17, 2015Assignee: TRADE BOX, LLCInventors: David Richmond, Howard Richmond, Michael A. Ragosta, Zhiyong Yu, Zhiwu Yu, Rentong Wang, Wenrui Dai
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Publication number: 20140366909Abstract: A hair styling device is described that has a handle, an elongated, substantially cylindrical, heatable rod providing a curling surface and supported by the handle, a heater for heating the curling surface, a support spaced apart from the curling surface, and a rotatable member rotatable relative to the curling surface for wrapping hair around and in contact with the curling surface. The device has an opening in the rotatable member for receiving a section of a user's hair, a motor for rotating the rotatable member, and a flexible, heat-resistant clamp supported by the support and extending from the support toward the curling surface for clamping hair against the curling surface.Type: ApplicationFiled: June 13, 2014Publication date: December 18, 2014Inventors: David Richmond, Howard Richmond, Michael A. Ragosta, Zhiyong Yu, Zhiwu Yu, Rentong Wang, Wenrui Dai
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Patent number: D724784Type: GrantFiled: June 13, 2014Date of Patent: March 17, 2015Assignee: Trade Box, LLCInventors: David Richmond, Howard Richmond, Michael A. Ragosta, Zhiyong Yu, Zhiwu Yu, Rentong Wang, Wenrui Dai, Ruiju Liu, Qianli Zhou, Yiyan Feng
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Patent number: D732738Type: GrantFiled: November 3, 2014Date of Patent: June 23, 2015Assignee: TRADE BOX, LLCInventors: David Richmond, Howard Richmond, Michael A. Ragosta, Zhiyong Yu, Zhiwu Yu, Rentong Wang, Wenrui Dai, Ruiju Liu, Qianli Zhou, Yiyan Feng
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Patent number: D735410Type: GrantFiled: November 20, 2014Date of Patent: July 28, 2015Assignee: TRADE BOX, LLCInventors: David Richmond, Howard Richmond, Michael A. Ragosta, Zhiyong Yu, Zhiwu Yu, Rentong Wang, Wenrui Dai, Ruiju Liu, Qianli Zhou, Yiyan Feng
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Patent number: D743624Type: GrantFiled: May 19, 2014Date of Patent: November 17, 2015Assignee: TRADE BOX, LLCInventors: David Richmond, Howard Richmond, Michael A. Ragosta, Zhiyong Yu, Rentong Wang, Zhiwu Yu, Wenrui Dai, Ruiju Liu, Qianli Zhou, Yiyan Feng