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Previous works have shown that convolutional neural networks can achieve good performance in image denoising tasks. However, limited by the local rigid convolutional operation, these methods lead to oversmoothing artifacts. A deeper network…

图像与视频处理 · 电气工程与系统科学 2020-07-15 Meng Chang , Qi Li , Huajun Feng , Zhihai Xu

3D reconstruction from a single image is a key problem in multiple applications ranging from robotic manipulation to augmented reality. Prior methods have tackled this problem through generative models which predict 3D reconstructions as…

计算机视觉与模式识别 · 计算机科学 2017-08-17 Andrey Kurenkov , Jingwei Ji , Animesh Garg , Viraj Mehta , JunYoung Gwak , Christopher Choy , Silvio Savarese

Point cloud denoising is a fundamental and crucial challenge in real-world point cloud applications. Existing quantitative evaluation metrics for point cloud denoising methods are implemented in a supervised manner, which requires both the…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Zhiyong Su , Jincan Wu , Yonghui Liu , Zheng Li , Weiqing Li

Point cloud salient object detection has attracted the attention of researchers in recent years. Since existing works do not fully utilize the geometry context of 3D objects, blurry boundaries are generated when segmenting objects with…

计算机视觉与模式识别 · 计算机科学 2025-02-25 Chen Wang , Liyuan Zhang , Le Hui , Qi Liu , Yuchao Dai

Removing the noise and improving the visual quality of hyperspectral images (HSIs) is challenging in academia and industry. Great efforts have been made to leverage local, global or spectral context information for HSI denoising. However,…

图像与视频处理 · 电气工程与系统科学 2023-04-20 Haodong Pan , Feng Gao , Junyu Dong , Qian Du

To better address challenging issues of the irregularity and inhomogeneity inherently present in 3D point clouds, researchers have been shifting their focus from the design of hand-craft point feature towards the learning of 3D point…

计算机视觉与模式识别 · 计算机科学 2022-11-21 Xiang Li , Mingyang Wang , Congcong Wen , Lingjing Wang , Nan Zhou , Yi Fang

The application of deep learning to 3D point clouds is challenging due to its lack of order. Inspired by the point embeddings of PointNet and the edge embeddings of DGCNNs, we propose three improvements to the task of point cloud analysis.…

计算机视觉与模式识别 · 计算机科学 2021-04-09 Chaitanya Kaul , Nick Pears , Suresh Manandhar

We propose an end-to-end trainable Convolutional Neural Network (CNN), named GridDehazeNet, for single image dehazing. The GridDehazeNet consists of three modules: pre-processing, backbone, and post-processing. The trainable pre-processing…

计算机视觉与模式识别 · 计算机科学 2019-08-12 Xiaohong Liu , Yongrui Ma , Zhihao Shi , Jun Chen

Due to limitations in acquisition equipment, noise perturbations often corrupt 3-D point clouds, hindering down-stream tasks such as surface reconstruction, rendering, and further processing. Existing 3-D point cloud denoising methods…

计算机视觉与模式识别 · 计算机科学 2024-11-22 Wenqiang Xu , Wenrui Dai , Duoduo Xue , Ziyang Zheng , Chenglin Li , Junni Zou , Hongkai Xiong

Surface-based geodesic topology provides strong cues for object semantic analysis and geometric modeling. However, such connectivity information is lost in point clouds. Thus we introduce GeoNet, the first deep learning architecture trained…

计算机视觉与模式识别 · 计算机科学 2019-01-04 Tong He , Haibin Huang , Li Yi , Yuqian Zhou , Chihao Wu , Jue Wang , Stefano Soatto

Estimating surface normals from 3D point clouds is critical for various applications, including surface reconstruction and rendering. While existing methods for normal estimation perform well in regions where normals change slowly, they…

计算机视觉与模式识别 · 计算机科学 2023-08-24 Haoyi Xiu , Xin Liu , Weimin Wang , Kyoung-Sook Kim , Masashi Matsuoka

The purpose of intrinsic decomposition is to separate an image into its albedo (reflective properties) and shading components (illumination properties). This is challenging because it's an ill-posed problem. Conventional approaches…

计算机视觉与模式识别 · 计算机科学 2024-03-29 Xiaoyan Xing , Konrad Groh , Sezer Karaoglu , Theo Gevers

Recycled and recirculated books, such as ancient texts and reused textbooks, hold significant value in the second-hand goods market, with their worth largely dependent on surface preservation. However, accurately assessing surface defects…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Jun Yu , WenJian Wang

This paper explores the problem of task-oriented downsampling over 3D point clouds, which aims to downsample a point cloud while maintaining the performance of subsequent applications applied to the downsampled sparse points as much as…

计算机视觉与模式识别 · 计算机科学 2021-04-13 Yue Qian , Junhui Hou , Qijian Zhang , Yiming Zeng , Sam Kwong , Ying He

Salient object detection (SOD) in remote sensing images faces significant challenges due to large variations in object sizes, the computational cost of self-attention mechanisms, and the limitations of CNN-based extractors in capturing…

计算机视觉与模式识别 · 计算机科学 2026-03-13 Bin Wan , Runmin Cong , Xiaofei Zhou , Hao Fang , Yaoqi Sun , Sam Kwong

This paper presents a novel non-local part-aware deep neural network to denoise point clouds by exploring the inherent non-local self-similarity in 3D objects and scenes. Different from existing works that explore small local patches, we…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Chao Huang , Ruihui Li , Xianzhi Li , Chi-Wing Fu

Low-dose CT images are essential for reducing radiation exposure in cancer screening, pediatric imaging, and longitudinal monitoring protocols, but their quality is often degraded by noise from low-dose acquisition, patient motion, or…

计算机视觉与模式识别 · 计算机科学 2026-03-12 Jitindra Fartiyal , Pedro Freire , Sergei K. Turitsyn , Sergei G. Solovski

3D object detection plays an important role in a large number of real-world applications. It requires us to estimate the localizations and the orientations of 3D objects in real scenes. In this paper, we present a new network architecture…

计算机视觉与模式识别 · 计算机科学 2019-09-25 Xin Zhao , Zhe Liu , Ruolan Hu , Kaiqi Huang

Generative models that produce point clouds have emerged as a powerful tool to represent 3D surfaces, and the best current ones rely on learning an ensemble of parametric representations. Unfortunately, they offer no control over the…

计算机视觉与模式识别 · 计算机科学 2019-11-27 Jan Bednarik , Shaifali Parashar , Erhan Gundogdu , Mathieu Salzmann , Pascal Fua

Deep convolutional neural networks perform better on images containing spatially invariant noise (synthetic noise); however, their performance is limited on real-noisy photographs and requires multiple stage network modeling. To advance the…

计算机视觉与模式识别 · 计算机科学 2020-03-24 Saeed Anwar , Nick Barnes