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Recently, 3D hand reconstruction has gained more attention in human-computer cooperation, especially for hand-object interaction scenario. However, it still remains huge challenge due to severe hand-occlusion caused by interaction, which…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Feng Shuang , Wenbo He , Shaodong Li

This article aims to present a new method to reconstruct slowly varying width defects in 2D waveguides using locally resonant frequencies. At these frequencies, locally resonant modes propagate in the waveguide under the form of Airy…

Mathematical Physics · Physics 2023-04-13 Angèle Niclas , Laurent Seppecher

We present a new multi-stream 3D mesh reconstruction network (MSMR-Net) for hand pose estimation from a single RGB image. Our model consists of an image encoder followed by a mesh-convolution decoder composed of connected graph convolution…

Computer Vision and Pattern Recognition · Computer Science 2021-04-27 Uri Wollner , Guy Ben-Yosef

Background: Three-dimensional, whole heart, balanced steady state free precession (WH-bSSFP) sequences provide delineation of intra-cardiac and vascular anatomy. However, they have long acquisition times. Here, we propose significant speed…

Image and Video Processing · Electrical Eng. & Systems 2019-12-24 Jennifer A. Steeden , Michael Quail , Alexander Gotschy , Andreas Hauptmann , Simon Arridge , Rodney Jones , Vivek Muthurangu

Recent advances in neural implicit surfaces for multi-view 3D reconstruction primarily focus on improving large-scale surface reconstruction accuracy, but often produce over-smoothed geometries that lack fine surface details. To address…

Computer Vision and Pattern Recognition · Computer Science 2023-02-15 Erich Liang , Kenan Deng , Xi Zhang , Chun-Kai Wang

The malformed hands in the AI-generated images seriously affect the authenticity of the images. To refine malformed hands, existing depth-based approaches use a hand depth estimator to guide the refinement of malformed hands. Due to the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Chen-Bin Feng , Kangdao Liu , Jian Sun , Jiping Jin , Yiguo Jiang , Chi-Man Vong

Recent years have witnessed a trend of the deep integration of the generation and reconstruction paradigms. In this paper, we extend the ability of controllable generative models for a more comprehensive hand mesh recovery task: direct hand…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Mengcheng Li , Hongwen Zhang , Yuxiang Zhang , Ruizhi Shao , Tao Yu , Yebin Liu

This work addresses a novel and challenging problem of estimating the full 3D hand shape and pose from a single RGB image. Most current methods in 3D hand analysis from monocular RGB images only focus on estimating the 3D locations of hand…

Computer Vision and Pattern Recognition · Computer Science 2019-04-23 Liuhao Ge , Zhou Ren , Yuncheng Li , Zehao Xue , Yingying Wang , Jianfei Cai , Junsong Yuan

Recent advancements have showcased the potential of handheld millimeter-wave (mmWave) imaging, which applies synthetic aperture radar (SAR) principles in portable settings. However, existing studies addressing handheld motion errors either…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Yadong Li , Dongheng Zhang , Ruixu Geng , Jincheng Wu , Yang Hu , Qibin Sun , Yan Chen

Accurately recovering the dense 3D mesh of both hands from monocular images poses considerable challenges due to occlusions and projection ambiguity. Most of the existing methods extract features from color images to estimate the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-11 Jinwei Ren , Jianke Zhu

Deep learning based methods, especially convolutional neural networks (CNNs) have been successfully applied in the field of single image super-resolution (SISR). To obtain better fidelity and visual quality, most of existing networks are of…

Image and Video Processing · Electrical Eng. & Systems 2021-08-17 Wenbin Xie , Dehua Song , Chang Xu , Chunjing Xu , Hui Zhang , Yunhe Wang

To increase the flexibility and scalability of deep neural networks for image reconstruction, a framework is proposed based on bandpass filtering. For many applications, sensing measurements are performed indirectly. For example, in…

Computer Vision and Pattern Recognition · Computer Science 2018-11-27 Joseph Y. Cheng , Feiyu Chen , Marcus T. Alley , John M. Pauly , Shreyas S. Vasanawala

3D Gaussian Splatting (3D-GS) enables efficient novel view synthesis, but treats all frequencies uniformly, making it difficult to separate coarse structure from fine detail. Recent works have started to exploit frequency signals, but lack…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Yishai Lavi , Leo Segre , Shai Avidan

Signed Distance Functions (SDFs) are vital implicit representations to represent high fidelity 3D surfaces. Current methods mainly leverage a neural network to learn an SDF from various supervisions including signed distances, 3D point…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Chao Chen , Yu-Shen Liu , Zhizhong Han

Convolutional neural networks were recently employed to fully reconstruct fluid simulation data from a set of reduced parameters. However, since (de-)convolutions traditionally trained with supervised L1-loss functions do not discriminate…

Machine Learning · Computer Science 2020-05-29 Simon Biland , Vinicius C. Azevedo , Byungsoo Kim , Barbara Solenthaler

In general, hand pose estimation aims to improve the robustness of model performance in the real-world scenes. However, it is difficult to enhance the robustness since existing datasets are obtained in restricted environments to annotate 3D…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Bosang Kim , Jonghyun Kim , Hyotae Lee , Lanying Jin , Jeongwon Ha , Dowoo Kwon , Jungpyo Kim , Wonhyeok Im , KyungMin Jin , Jungho Lee

In this paper, we consider the challenging task of simultaneously locating and recovering multiple hands from a single 2D image. Previous studies either focus on single hand reconstruction or solve this problem in a multi-stage way.…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Jinwei Ren , Jianke Zhu , Jialiang Zhang

In this work, we propose a framework for single-view hand mesh reconstruction, which can simultaneously achieve high reconstruction accuracy, fast inference speed, and temporal coherence. Specifically, for 2D encoding, we propose…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Xingyu Chen , Yufeng Liu , Yajiao Dong , Xiong Zhang , Chongyang Ma , Yanmin Xiong , Yuan Zhang , Xiaoyan Guo

Image denoising is a fundamental and challenging task in the field of computer vision. Most supervised denoising methods learn to reconstruct clean images from noisy inputs, which have intrinsic spectral bias and tend to produce…

Computer Vision and Pattern Recognition · Computer Science 2023-09-20 Yujin Wang , Lingen Li , Tianfan Xue , Jinwei Gu

Sparse random mode decomposition (SRMD) is a novel algorithm that constructs a random time-frequency feature space to sparsely approximate spectrograms, effectively separating modes. However, it fails to distinguish adjacent or overlapped…

Signal Processing · Electrical Eng. & Systems 2025-01-28 Chen Luo , Tao Chen , Lei Xie , Hongye Su