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Near field depth estimation around a self driving car is an important function that can be achieved by four wide angle fisheye cameras having a field of view of over 180. Depth estimation based on convolutional neural networks (CNNs)…

Computer Vision and Pattern Recognition · Computer Science 2018-09-25 Varun Ravi Kumar , Stefan Milz , Martin Simon , Christian Witt , Karl Amende , Johannes Petzold , Senthil Yogamani , Timo Pech

Depth completion aims at predicting dense pixel-wise depth from an extremely sparse map captured from a depth sensor, e.g., LiDARs. It plays an essential role in various applications such as autonomous driving, 3D reconstruction, augmented…

Computer Vision and Pattern Recognition · Computer Science 2022-08-30 Junjie Hu , Chenyu Bao , Mete Ozay , Chenyou Fan , Qing Gao , Honghai Liu , Tin Lun Lam

We integrate sparse radar data into a monocular depth estimation model and introduce a novel preprocessing method for reducing the sparseness and limited field of view provided by radar. We explore the intrinsic error of different radar…

Image and Video Processing · Electrical Eng. & Systems 2022-03-01 Chen-Chou Lo , Patrick Vandewalle

We present a fast and accurate method for dense depth reconstruction from sparsely sampled light fields obtained using a synchronized camera array. In our method, the source images are over-segmented into non-overlapping compact superpixels…

Image and Video Processing · Electrical Eng. & Systems 2018-12-18 Aleksandra Chuchvara , Attila Barsi , Atanas Gotchev

Dense depth estimation using millimeter-wave radar typically requires dense LiDAR supervision, generated via multi-frame projection and interpolation, for guiding the learning of accurate depth from sparse radar measurements and RGB images.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Xingrui Qin , Wentao Zhao , Chuan Cao , Yihe Niu , Tianchen Deng , Houcheng Jiang , Rui Guo , Jingchuan Wang

We propose a method that combines sparse depth (LiDAR) measurements with an intensity image and to produce a dense high-resolution depth image. As there are few, but accurate, depth measurements from the scene, our method infers the…

Image and Video Processing · Electrical Eng. & Systems 2019-11-01 Alireza Ahrabian , Joao F. C. Mota , Andrew M. Wallace

Stereo matching in remote sensing has recently garnered increased attention, primarily focusing on supervised learning. However, datasets with ground truth generated by expensive airbone Lidar exhibit limited quantity and diversity,…

Computer Vision and Pattern Recognition · Computer Science 2024-08-15 Liting Jiang , Yuming Xiang , Feng Wang , Hongjian You

Semantic segmentation from RGB cameras is essential to the perception of autonomous flying vehicles. The stability of predictions through the captured videos is paramount to their reliability and, by extension, to the trustworthiness of the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-27 Cédric Vincent , Taehyoung Kim , Henri Meeß

This work presents dense stereo reconstruction using high-resolution images for infrastructure inspections. The state-of-the-art stereo reconstruction methods, both learning and non-learning ones, consume too much computational resource on…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Yaoyu Hu , Weikun Zhen , Sebastian Scherer

This paper addresses the problem of learning to complete a scene's depth from sparse depth points and images of indoor scenes. Specifically, we study the case in which the sparse depth is computed from a visual-inertial simultaneous…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Kourosh Sartipi , Tien Do , Tong Ke , Khiem Vuong , Stergios I. Roumeliotis

Various 3D reconstruction methods have enabled civil engineers to detect damage on a road surface. To achieve the millimetre accuracy required for road condition assessment, a disparity map with subpixel resolution needs to be used.…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Rui Fan , Xiao Ai , Naim Dahnoun

Three-dimensional imaging plays an important role in imaging applications where it is necessary to record depth. The number of applications that use depth imaging is increasing rapidly, and examples include self-driving autonomous vehicles…

Image and Video Processing · Electrical Eng. & Systems 2021-04-21 Alice Ruget , Stephen McLaughlin , Robert K. Henderson , Istvan Gyongy , Abderrahim Halimi , Jonathan Leach

We present a novel approach for metric dense depth estimation based on the fusion of a single-view image and a sparse, noisy Radar point cloud. The direct fusion of heterogeneous Radar and image data, or their encodings, tends to yield…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Han Li , Yukai Ma , Yaqing Gu , Kewei Hu , Yong Liu , Xingxing Zuo

In this paper, we introduce Semi-SMD, a novel metric depth estimation framework tailored for surrounding cameras equipment in autonomous driving. In this work, the input data consists of adjacent surrounding frames and camera parameters. We…

Robotics · Computer Science 2025-09-10 Yusen Xie , Zhengmin Huang , Shaojie Shen , Jun Ma

This paper introduces Scene Completeness-Aware Depth Completion (SCADC) to complete raw lidar scans into dense depth maps with fine and complete scene structures. Recent sparse depth completion for lidars only focuses on the lower scenes…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Cho-Ying Wu , Ulrich Neumann

Due to the domain differences and unbalanced disparity distribution across multiple datasets, current stereo matching approaches are commonly limited to a specific dataset and generalize poorly to others. Such domain shift issue is usually…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Zhelun Shen , Xibin Song , Yuchao Dai , Dingfu Zhou , Zhibo Rao , Liangjun Zhang

Estimating depth from a monocular image is an ill-posed problem: when the camera projects a 3D scene onto a 2D plane, depth information is inherently and permanently lost. Nevertheless, recent work has shown impressive results in estimating…

Computer Vision and Pattern Recognition · Computer Science 2021-12-13 Jagpreet Chawla , Nikhil Thakurdesai , Anuj Godase , Md Reza , David Crandall , Soon-Heung Jung

Event cameras offer a promising avenue for multi-view stereo depth estimation and Simultaneous Localization And Mapping (SLAM) due to their ability to detect blur-free 3D edges at high-speed and over broad illumination conditions. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Diego Hitzges , Suman Ghosh , Guillermo Gallego

We present an algorithm to estimate fast and accurate depth maps from light fields via a sparse set of depth edges and gradients. Our proposed approach is based around the idea that true depth edges are more sensitive than texture edges to…

Computer Vision and Pattern Recognition · Computer Science 2021-07-08 Numair Khan , Min H. Kim , James Tompkin

In this paper, we propose a novel transmission scheme, called sparse layered MIMO (SL-MIMO), that combines non-orthogonal transmission and singular value decomposition (SVD) precoding. Nonorthogonality in SL-MIMO allows re-using of the…

Information Theory · Computer Science 2022-08-15 Mohamad H. Dinan , Nemanja Stefan Perovic , Mark F. Flanagan