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We present a new adaptive method for electronic structure calculations based on novel fast algorithms for reduction of multivariate mixtures. In our calculations, spatial orbitals are maintained as Gaussian mixtures whose terms are selected…

Numerical Analysis · Mathematics 2019-06-19 Gregory Beylkin , Lucas Monzon , Xinshuo Yang

Three-dimensional geometric data offer an excellent domain for studying representation learning and generative modeling. In this paper, we look at geometric data represented as point clouds. We introduce a deep AutoEncoder (AE) network with…

Computer Vision and Pattern Recognition · Computer Science 2018-06-13 Panos Achlioptas , Olga Diamanti , Ioannis Mitliagkas , Leonidas Guibas

We propose a new data representation method based on Quantum Cognition Machine Learning and apply it to manifold learning, specifically to the estimation of intrinsic dimension of data sets. The idea is to learn a representation of each…

Recent advances in feed-forward 3D Gaussian Splatting have led to rapid improvements in efficient scene reconstruction from sparse views. However, most existing approaches construct Gaussian primitives directly aligned with the pixels in…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Yiming Wang , Lucy Chai , Xuan Luo , Michael Niemeyer , Manuel Lagunas , Stephen Lombardi , Siyu Tang , Tiancheng Sun

Point cloud registration involves aligning one point cloud with another or with a three-dimensional (3D) model, enabling the integration of multimodal data into a unified representation. This is essential in applications such as…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Mehdi Maboudi , Said Harb , Jackson Ferrao , Kourosh Khoshelham , Yelda Turkan , Karam Mawas

Size, weight, and power constrained platforms impose constraints on computational resources that introduce unique challenges in implementing localization algorithms. We present a framework to perform fast localization on such platforms…

Robotics · Computer Science 2018-04-02 Aditya Dhawale , Kumar Shaurya Shankar , Nathan Michael

We present an analytic approximation model for non-rigid point set registration, grounded in the multivariate Taylor expansion of vector-valued functions. By exploiting the algebraic structure of Taylor expansions, we construct a structured…

Image and Video Processing · Electrical Eng. & Systems 2026-02-20 Wei Feng , Tengda Wei , Haiyong Zheng

We can use a method called registration to integrate some point clouds that represent the shape of the real world. In this paper, we propose highly accurate and stable registration method. Our method detects keypoints from point clouds and…

Computer Vision and Pattern Recognition · Computer Science 2020-11-11 Masaki Yoshii , Ikuko Shimizu

In this paper, we propose a coarse-to-fine integration solution inspired by the classical ICP algorithm, to pairwise 3D point cloud registration with two improvements of hybrid metric spaces (eg, BSC feature and Euclidean geometry spaces)…

Computer Vision and Pattern Recognition · Computer Science 2018-08-14 Yue Pan , Bisheng Yang , Fuxun Liang , Zhen Dong

Learned image compression methods have shown superior rate-distortion performance and remarkable potential compared to traditional compression methods. Most existing learned approaches use stacked convolution or window-based self-attention…

Image and Video Processing · Electrical Eng. & Systems 2024-01-03 Huairui Wang , Nianxiang Fu , Zhenzhong Chen , Shan Liu

3D Gaussian Splatting (3DGS) effectively synthesizes novel views through its flexible representation, yet fails to accurately reconstruct scene geometry. While modern variants like PGSR introduce additional losses to ensure proper depth and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Zhentao Huang , Di Wu , Zhenbang He , Minglun Gong

In the recent years, there has been a significant improvement in the quality of samples produced by (deep) generative models such as variational auto-encoders and generative adversarial networks. However, the representation capabilities of…

Image and Video Processing · Electrical Eng. & Systems 2026-03-31 Shady Abu Hussein , Tom Tirer , Raja Giryes

Traditional algorithms of point set registration minimizing point-to-plane distances often achieve a better estimation of rigid transformation than those minimizing point-to-point distances. Nevertheless, recent deep-learning-based methods…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Tatsuya Yatagawa , Yutaka Ohtake , Hiromasa Suzuki

Probabilistic methods for point set registration have interesting theoretical properties, such as linear complexity in the number of used points, and they easily generalize to joint registration of multiple point sets. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2020-11-05 Felix Järemo Lawin , Per-Erik Forssén

Point set registration involves identifying a smooth invertible transformation between corresponding points in two point sets, one of which may be smaller than the other and possibly corrupted by observation noise. This problem is…

Applications · Statistics 2018-12-27 Adam Spannaus , Vasileios Maroulas , David J. Keffer , Kody J. H. Law

This paper investigates continuous representations of steering vectors over frequency and microphone/source positions for augmented listening (e.g., spatial filtering and binaural rendering), enabling user-parameterized control of the…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-17 Diego Di Carlo , Shoichi Koyama , Nugraha Aditya Arie , Fontaine Mathieu , Bando Yoshiaki , Yoshii Kazuyoshi

Three-dimensional data registration is an established yet challenging problem that is key in many different applications, such as mapping the environment for autonomous vehicles, and modeling objects and people for avatar creation, among…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Hanz Cuevas-Velasquez , Alejandro Galán-Cuenca , Antonio Javier Gallego , Marcelo Saval-Calvo , Robert B. Fisher

Affine Grassmannian has been favored for expressing proximity between lines and planes due to its theoretical exactness in measuring distances among features. Despite this advantage, the existing method can only measure the proximity…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Jaeho Shin , Hyeonjae Gil , Junwoo Jang , Maani Ghaffari , Ayoung Kim

Point Cloud Registration is a fundamental and challenging problem in 3D computer vision. Recent works often utilize the geometric structure information in point feature embedding or outlier rejection for registration while neglecting to…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Qianliang Wu , Yaqi Shen , Haobo Jiang , Guofeng Mei , Yaqing Ding , Lei Luo , Jin Xie , Jian Yang

We propose a shape fitting/registration method based on a Gaussian Processes formulation, suitable for shapes with extensive regions of missing data. Gaussian Processes are a proven powerful tool, as they provide a unified setting for shape…

Computer Vision and Pattern Recognition · Computer Science 2025-07-24 Filipa Valdeira , Ricardo Ferreira , Alessandra Micheletti , Cláudia Soares