Adaptive Annotation Distribution for Weakly Supervised Point Cloud Semantic Segmentation

Kavli Affiliate: Wei Gao | First 5 Authors: Zhiyi Pan, Nan Zhang, Wei Gao, Shan Liu, Ge Li | Summary: Weakly supervised point cloud semantic segmentation has attracted a lot of attention due to its ability to alleviate the heavy reliance on fine-grained annotations of point clouds. However, in practice, sparse annotation usually exhibits a […]


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Point Cloud Semantic Segmentation with Sparse and Inhomogeneous Annotations

Kavli Affiliate: Wei Gao | First 5 Authors: Zhiyi Pan, Nan Zhang, Wei Gao, Shan Liu, Ge Li | Summary: Utilizing uniformly distributed sparse annotations, weakly supervised learning alleviates the heavy reliance on fine-grained annotations in point cloud semantic segmentation tasks. However, few works discuss the inhomogeneity of sparse annotations, albeit it is common in […]


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The Universe SPHEREx Will See: Empirically Based Galaxy Simulations and Redshift Predictions

Kavli Affiliate: James J. Bock | First 5 Authors: Richard M. Feder, Daniel C. Masters, Bomee Lee, James J. Bock, Yi-Kuan Chiang | Summary: We simulate galaxy properties and redshift estimation for SPHEREx, the next NASA Medium Class Explorer. To make robust models of the galaxy population and test spectro-photometric redshift performance for SPHEREx, we […]


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Digital Discovery of interferometric Gravitational Wave Detectors

Kavli Affiliate: Rana X. Adhikari | First 5 Authors: Mario Krenn, Yehonathan Drori, Rana X Adhikari, , | Summary: Gravitational waves, detected a century after they were first theorized, are spacetime distortions caused by some of the most cataclysmic events in the universe, including black hole mergers and supernovae. The successful detection of these waves […]


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In-situ tuning of optomechanical crystals with nano-oxidation

Kavli Affiliate: Oskar Painter | First 5 Authors: Utku Hatipoglu, Sameer Sonar, David P. Lake, Srujan Meesala, Oskar Painter | Summary: Optomechanical crystals are a promising device platform for quantum transduction and sensing. Precise targeting of the optical and acoustic resonance frequencies of these devices is crucial for future advances on these fronts. However, fabrication […]


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Cryogenic Focus Measurement System for a Wide-Field Infrared Space Telescope

Kavli Affiliate: James Bock | First 5 Authors: Samuel S. Condon, Stephen Padin, James Bock, Howard Hui, Phillip Korngut | Summary: We describe a technique for measuring focus errors in a cryogenic, wide-field, near-infrared space telescope. The measurements are made with a collimator looking through a large vacuum window, with a reflective cold filter to […]


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Cryogenic Focus Measurement System for a Wide-Field Infrared Space Telescope

Kavli Affiliate: James Bock | First 5 Authors: Samuel S. Condon, Stephen Padin, James Bock, Howard Hui, Phillip Korngut | Summary: We describe a technique for measuring focus errors in a cryogenic, wide-field, near-infrared space telescope. The measurements are made with a collimator looking through a large vacuum window, with a reflective cold filter to […]


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StreamFlow: Streamlined Multi-Frame Optical Flow Estimation for Video Sequences

Kavli Affiliate: Wei Gao | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Occlusions between consecutive frames have long posed a significant challenge in optical flow estimation. The inherent ambiguity introduced by occlusions directly violates the brightness constancy constraint and considerably hinders pixel-to-pixel matching. To address this issue, multi-frame optical flow methods leverage […]


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Mug-STAN: Adapting Image-Language Pretrained Models for General Video Understanding

Kavli Affiliate: Wei Gao | First 5 Authors: , , , , | Summary: Large-scale image-language pretrained models, e.g., CLIP, have demonstrated remarkable proficiency in acquiring general multi-modal knowledge through web-scale image-text data. Despite the impressive performance of image-language models on various image tasks, how to effectively expand them on general video understanding remains an […]


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Mesoscopic ultrafast nonlinear optics — The emergence of multimode quantum non-Gaussian physics

Kavli Affiliate: Alireza Marandi | First 5 Authors: Ryotatsu Yanagimoto, Edwin Ng, Marc Jankowski, Rajveer Nehra, Timothy P. McKenna | Summary: Over the last few decades, nonlinear optics has become significantly more nonlinear, traversing nearly a billionfold improvement in energy efficiency, with ultrafast nonlinear nanophotonics in particular emerging as a frontier for combining both spatial […]


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