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There has been tremendous research progress in estimating the depth of a scene from a monocular camera image. Existing methods for single-image depth prediction are exclusively based on deep neural networks, and their training can be…

Computer Vision and Pattern Recognition · Computer Science 2019-05-21 Ali Jahani Amiri , Shing Yan Loo , Hong Zhang

Reconstructing high-quality images from substantially undersampled k-space data for accelerated MRI presents a challenging ill-posed inverse problem. While supervised deep learning has revolutionized this field, it relies heavily on large…

Image and Video Processing · Electrical Eng. & Systems 2025-12-22 Xinzhe Luo , Yingzhen Li , Chen Qin

Domain shift happens in cross-domain scenarios commonly because of the wide gaps between different domains: when applying a deep learning model well-trained in one domain to another target domain, the model usually performs poorly. To…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Munan Ning , Cheng Bian , Dong Wei , Chenglang Yuan , Yaohua Wang , Yang Guo , Kai Ma , Yefeng Zheng

Despite its importance, unsupervised domain adaptation (UDA) on LiDAR semantic segmentation is a task that has not received much attention from the research community. Only recently, a completion-based 3D method has been proposed to tackle…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Eojindl Yi , Juyoung Yang , Junmo Kim

Depth estimation is a crucial step for image-guided intervention in robotic surgery and laparoscopic imaging system. Since per-pixel depth ground truth is difficult to acquire for laparoscopic image data, it is rarely possible to apply…

Computer Vision and Pattern Recognition · Computer Science 2023-06-22 Baoru Huang , Jian-Qing Zheng , Anh Nguyen , Chi Xu , Ioannis Gkouzionis , Kunal Vyas , David Tuch , Stamatia Giannarou , Daniel S. Elson

The fine-grained localization of clinicians in the operating room (OR) is a key component to design the new generation of OR support systems. Computer vision models for person pixel-based segmentation and body-keypoints detection are needed…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Vinkle Srivastav , Afshin Gangi , Nicolas Padoy

Unsupervised anomaly detection (UAD) aims to find anomalous images by optimising a detector using a training set that contains only normal images. UAD approaches can be based on reconstruction methods, self-supervised approaches, and…

Image and Video Processing · Electrical Eng. & Systems 2023-08-23 Yu Tian , Guansong Pang , Yuyuan Liu , Chong Wang , Yuanhong Chen , Fengbei Liu , Rajvinder Singh , Johan W Verjans , Mengyu Wang , Gustavo Carneiro

Unsupervised domain adaptation (UDA) in 3D segmentation tasks presents a formidable challenge, primarily stemming from the sparse and unordered nature of point cloud data. Especially for LiDAR point clouds, the domain discrepancy becomes…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Xidong Peng , Runnan Chen , Feng Qiao , Lingdong Kong , Youquan Liu , Yujing Sun , Tai Wang , Xinge Zhu , Yuexin Ma

In recent studies on MRI reconstruction, advances have shown significant promise for further accelerating the MRI acquisition. Most state-of-the-art methods require a large amount of fully-sampled data to optimise reconstruction models,…

Image and Video Processing · Electrical Eng. & Systems 2023-12-04 Junwei Yang , Pietro Liò

Aiming at inferring 3D shapes from 2D images, 3D shape reconstruction has drawn huge attention from researchers in computer vision and deep learning communities. However, it is not practical to assume that 2D input images and their…

Computer Vision and Pattern Recognition · Computer Science 2018-11-30 Yi-Lun Liao , Yao-Cheng Yang , Yu-Chiang Frank Wang

Curvelet frame is of special significance for photoacoustic tomography (PAT) due to its sparsifying and microlocalisation properties. We derive a one-to-one map between wavefront directions in image and data spaces in PAT which suggests…

Computer Vision and Pattern Recognition · Computer Science 2021-08-09 Bolin Pan , Simon R. Arridge , Felix Lucka , Ben T. Cox , Nam Huynh , Paul C. Beard , Edward Z. Zhang , Marta M. Betcke

While high-resolution pathology images lend themselves well to `data hungry' deep learning algorithms, obtaining exhaustive annotations on these images is a major challenge. In this paper, we propose a self-supervised CNN approach to…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Navid Alemi Koohbanani , Balagopal Unnikrishnan , Syed Ali Khurram , Pavitra Krishnaswamy , Nasir Rajpoot

Most current super-resolution methods rely on low and high resolution image pairs to train a network in a fully supervised manner. However, such image pairs are not available in real-world applications. Instead of directly addressing this…

Image and Video Processing · Electrical Eng. & Systems 2019-09-23 Andreas Lugmayr , Martin Danelljan , Radu Timofte

Supervised neural networks are known to achieve excellent results in various image restoration tasks. However, such training requires datasets composed of pairs of corrupted images and their corresponding ground truth targets.…

Computer Vision and Pattern Recognition · Computer Science 2022-11-21 Gregory Vaksman , Michael Elad

Advances in multi-spectral detectors are causing a paradigm shift in X-ray Computed Tomography (CT). Spectral information acquired from these detectors can be used to extract volumetric material composition maps of the object of interest.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-24 Mathé T. Zeegers , Ajinkya Kadu , Tristan van Leeuwen , Kees Joost Batenburg

State-of-the-art techniques for monocular camera reconstruction predominantly rely on the Structure from Motion (SfM) pipeline. However, such methods often yield reconstruction outcomes that lack crucial scale information, and over time,…

Robotics · Computer Science 2023-10-10 Chunge Bai , Ruijie Fu , Xiang Gao

Self-supervised depth estimation draws a lot of attention recently as it can promote the 3D sensing capabilities of self-driving vehicles. However, it intrinsically relies upon the photometric consistency assumption, which hardly holds…

Computer Vision and Pattern Recognition · Computer Science 2023-02-03 Yupeng Zheng , Chengliang Zhong , Pengfei Li , Huan-ang Gao , Yuhang Zheng , Bu Jin , Ling Wang , Hao Zhao , Guyue Zhou , Qichao Zhang , Dongbin Zhao

We present a new self-supervised paradigm on point cloud sequence understanding. Inspired by the discriminative and generative self-supervised methods, we design two tasks, namely point cloud sequence based Contrastive Prediction and…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Xiaoxiao Sheng , Zhiqiang Shen , Gang Xiao

Deep learning has significantly advanced PET image re-construction, achieving remarkable improvements in image quality through direct training on sinogram or image data. Traditional methods often utilize masks for inpainting tasks, but…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Bin Huang , Binzhong He , Yanhan Chen , Zhili Liu , Xinyue Wang , Binxuan Li , Qiegen Liu

Deep learning has shown remarkable progress in medical image semantic segmentation, yet its success heavily depends on large-scale expert annotations and consistent data distributions. In practice, annotations are scarce, and images are…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Ba-Thinh Lam , Thanh-Huy Nguyen , Hoang-Thien Nguyen , Quang-Khai Bui-Tran , Nguyen Lan Vi Vu , Phat K. Huynh , Ulas Bagci , Min Xu