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Department of Mathematics |
Rings and Modules Seminar
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Yang Zhang
Yang(dot)Zhang(at)umanitoba(dot)ca
© 2025, The Author
University of Manitoba
Monday, March 24, 2025
Abstract:
Tensor (matrix) completions have wide applications in fields such as computer vision and image processing. To achieve completion, most existing methods are based on singular value decomposition and nuclear norm minimization of real tensors. However, these tensor completion methods cannot simultaneously maintain the color channel correlation and evolution robustness of color video frames, and require high computational costs to process high-dimensional data. Therefore, they have some limitations in model generalization ability and computational efficiency. In this talk, through the definition of QR decomposition and the new quaternion tensor norm, a new quaternion tensor (matrix) completion method is explored, which can well balance the model generalization ability and efficiency, and the performance of this completion is significantly improved. Numerical experiments on color images and videos prove the effectiveness of our proposed method. |