EPContrast: Effective Point-level Contrastive Learning for Large-scale Point Cloud Understanding

Kavli Affiliate: Wei Gao | First 5 Authors: Zhiyi Pan, Guoqing Liu, Wei Gao, Thomas H. Li, | Summary: The acquisition of inductive bias through point-level contrastive learning holds paramount significance in point cloud pre-training. However, the square growth in computational requirements with the scale of the point cloud poses a substantial impediment to the […]


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SimLayerKV: A Simple Framework for Layer-Level KV Cache Reduction

Kavli Affiliate: Wei Gao | First 5 Authors: Xuan Zhang, Cunxiao Du, Chao Du, Tianyu Pang, Wei Gao | Summary: Recent advancements in large language models (LLMs) have extended their capabilities to handle long contexts. However, increasing the number of model layers and the length of input sequences significantly escalates the memory required to store […]


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On “Inconsistencies of metalens performance and comparison with conventional diffractive optics”

Kavli Affiliate: Andrei Faraon | First 5 Authors: Amir Arbabi, Andrei Faraon, , , | Summary: It was recently claimed1 that reported focusing efficiency values of high numerical aperture metalenses are inconsistent with a theoretical bound, and their measurement results are incorrectly interpreted. We review the article and conclude that these claims are not well […]


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Distribution Guidance Network for Weakly Supervised Point Cloud Semantic Segmentation

Kavli Affiliate: Wei Gao | First 5 Authors: Zhiyi Pan, Wei Gao, Shan Liu, Ge Li, | Summary: Despite alleviating the dependence on dense annotations inherent to fully supervised methods, weakly supervised point cloud semantic segmentation suffers from inadequate supervision signals. In response to this challenge, we introduce a novel perspective that imparts auxiliary constraints […]


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Distribution Guidance Network for Weakly Supervised Point Cloud Semantic Segmentation

Kavli Affiliate: Wei Gao | First 5 Authors: Zhiyi Pan, Wei Gao, Shan Liu, Ge Li, | Summary: Despite alleviating the dependence on dense annotations inherent to fully supervised methods, weakly supervised point cloud semantic segmentation suffers from inadequate supervision signals. In response to this challenge, we introduce a novel perspective that imparts auxiliary constraints […]


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Perceptual Quality Assessment of Octree-RAHT Encoded 3D Point Clouds

Kavli Affiliate: Wei Gao | First 5 Authors: Dongshuai Duan, Honglei Su, Qi Liu, Hui Yuan, Wei Gao | Summary: No-reference bitstream-layer point cloud quality assessment (PCQA) can be deployed without full decoding at any network node to achieve real-time quality monitoring. In this work, we focus on the PCQA problem dedicated to Octree-RAHT encoding […]


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Perceptual Quality Assessment of Octree-RAHT Encoded 3D Point Clouds

Kavli Affiliate: Wei Gao | First 5 Authors: Dongshuai Duan, Honglei Su, Qi Liu, Hui Yuan, Wei Gao | Summary: No-reference bitstream-layer point cloud quality assessment (PCQA) can be deployed without full decoding at any network node to achieve real-time quality monitoring. In this work, we focus on the PCQA problem dedicated to Octree-RAHT encoding […]


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Perceptual Quality Assessment of Trisoup-Lifting Encoded 3D Point Clouds

Kavli Affiliate: Wei Gao | First 5 Authors: Juncheng Long, Honglei Su, Qi Liu, Hui Yuan, Wei Gao | Summary: No-reference bitstream-layer point cloud quality assessment (PCQA) can be deployed without full decoding at any network node to achieve real-time quality monitoring. In this work, we develop the first PCQA model dedicated to Trisoup-Lifting encoded […]


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Perceptual Quality Assessment of Trisoup-Lifting Encoded 3D Point Clouds

Kavli Affiliate: Wei Gao | First 5 Authors: Juncheng Long, Honglei Su, Qi Liu, Hui Yuan, Wei Gao | Summary: No-reference bitstream-layer point cloud quality assessment (PCQA) can be deployed without full decoding at any network node to achieve real-time quality monitoring. In this work, we develop the first PCQA model dedicated to Trisoup-Lifting encoded […]


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Direction Modulation Design for UAV Assisted by IRS with discrete phase shift

Kavli Affiliate: Wei Gao | First 5 Authors: Maolin Li, Wei Gao, Qi Wu, Feng Shu, Cunhua Pan | Summary: As a physical layer security technology, directional modulation (DM) can be combined with intelligent reflect-ing surface (IRS) to improve the security of drone communications. In this paper, a directional modulation scheme assisted by the IRS […]


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