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Dynamic scenes that contain both object motion and egomotion are a challenge for monocular visual odometry (VO). Another issue with monocular VO is the scale ambiguity, i.e. these methods cannot estimate scene depth and camera motion in…

计算机视觉与模式识别 · 计算机科学 2020-08-31 Hirak J Kashyap , Charless Fowlkes , Jeffrey L Krichmar

Existing results for low-rank matrix recovery largely focus on quadratic loss, which enjoys favorable properties such as restricted strong convexity/smoothness (RSC/RSM) and well conditioning over all low rank matrices. However, many…

机器学习 · 统计学 2021-11-17 Lijun Ding , Yuqian Zhang , Yudong Chen

Optical coherence tomography (OCT) captures cross-sectional data and is used for the screening, monitoring, and treatment planning of retinal diseases. Technological developments to increase the speed of acquisition often results in systems…

图像与视频处理 · 电气工程与系统科学 2023-01-03 Timothy T. Yu , Da Ma , Jayden Cole , Myeong Jin Ju , Mirza F. Beg , Marinko V. Sarunic

Recent work has shown that CNN-based depth and ego-motion estimators can be learned using unlabelled monocular videos. However, the performance is limited by unidentified moving objects that violate the underlying static scene assumption in…

计算机视觉与模式识别 · 计算机科学 2019-10-04 Jia-Wang Bian , Zhichao Li , Naiyan Wang , Huangying Zhan , Chunhua Shen , Ming-Ming Cheng , Ian Reid

Pose graph relaxation has become an indispensable addition to SLAM enabling efficient global registration of sensor reference frames under the objective of satisfying pair-wise relative transformation constraints. The latter may be given by…

机器人学 · 计算机科学 2023-07-25 Runze Yuan , Ran Cheng , Lige Liu , Tao Sun , Laurent Kneip

Monocular visual odometry approaches that purely rely on geometric cues are prone to scale drift and require sufficient motion parallax in successive frames for motion estimation and 3D reconstruction. In this paper, we propose to leverage…

计算机视觉与模式识别 · 计算机科学 2018-07-26 Nan Yang , Rui Wang , Jörg Stückler , Daniel Cremers

Traditional sampling theories consider the problem of reconstructing an unknown signal $x$ from a series of samples. A prevalent assumption which often guarantees recovery from the given measurements is that $x$ lies in a known subspace.…

元胞自动机与格子气 · 物理学 2009-03-30 Yonina C. Eldar , Moshe Mishali

In this article, we present a method for increasing adaptivity of an existing robust estimation algorithm by learning two parameters to better fit the residual distribution. The analyzed method uses these two parameters to calculate weights…

机器人学 · 计算机科学 2023-06-27 Shounak Das , Jason Gross

We consider the problem of recovering elements of a low-dimensional model from linear measurements. From signal and image processing to inverse problems in data science, this question has been at the center of many applications. Lately,…

信号处理 · 电气工程与系统科学 2025-05-15 Yann Traonmilin , Jean François Aujol , Antoine Guennec

Aerial scene understanding systems face stringent payload restrictions and must often rely on monocular depth estimation for modeling scene geometry, which is an inherently ill-posed problem. Moreover, obtaining accurate ground truth data…

计算机视觉与模式识别 · 计算机科学 2025-02-25 Horatiu Florea , Sergiu Nedevschi

Common object detection models consist of classification and regression branches, due to different task drivers, these two branches have different sensibility to the features from the same scale level and the same spatial location. The…

计算机视觉与模式识别 · 计算机科学 2022-07-07 Shuaizheng Hao , Hongzhe Liu , Ningwei Wang , Cheng Xu

We focus on estimating the 3D orientation of the ground plane from a single image. We formulate the problem as an inter-mingled multi-task prediction problem by jointly optimizing for pixel-wise surface normal direction, ground plane…

计算机视觉与模式识别 · 计算机科学 2019-08-13 Yunze Man , Xinshuo Weng , Xi Li , Kris Kitani

We propose a new technique for estimating spatially varying parametric materials from a single image of an object with unknown shape in unknown illumination. Our method uses a low-order parametric reflectance model, and incorporates strong…

图形学 · 计算机科学 2019-12-30 Kevin Karsch , David Forsyth

The recent success of hybrid methods in monocular odometry has led to many attempts to generalize the performance gains to hybrid monocular SLAM. However, most attempts fall short in several respects, with the most prominent issue being the…

机器人学 · 计算机科学 2023-06-14 Georges Younes , Douaa Khalil , John Zelek , Daniel Asmar

This work proposes a visual odometry method that combines points and plane primitives, extracted from a noisy depth camera. Depth measurement uncertainty is modelled and propagated through the extraction of geometric primitives to the…

计算机视觉与模式识别 · 计算机科学 2017-05-19 Pedro F. Proença , Yang Gao

Omnidirectional depth estimation has received much attention from researchers in recent years. However, challenges arise due to camera soiling and variations in camera layouts, affecting the robustness and flexibility of the algorithm. In…

计算机视觉与模式识别 · 计算机科学 2025-02-07 Ming Li , Xuejiao Hu , Xueqian Jin , Jinghao Cao , Sidan Du , Yang Li

This paper introduces a cost effective localization system combining monocular visual odometry , augmented reality (AR) poses, and integrated INS-GPS data. We address monocular VO scale factor issues using AR poses and enhance accuracy with…

机器人学 · 计算机科学 2024-11-26 Ankit Shaw

Monocular 3D object detection task aims to predict the 3D bounding boxes of objects based on monocular RGB images. Since the location recovery in 3D space is quite difficult on account of absence of depth information, this paper proposes a…

计算机视觉与模式识别 · 计算机科学 2021-06-10 Yingjie Cai , Buyu Li , Zeyu Jiao , Hongsheng Li , Xingyu Zeng , Xiaogang Wang

Existing self-supervised monocular depth estimation methods can get rid of expensive annotations and achieve promising results. However, these methods suffer from severe performance degradation when directly adopting a model trained on a…

计算机视觉与模式识别 · 计算机科学 2022-07-27 Mu He , Le Hui , Yikai Bian , Jian Ren , Jin Xie , Jian Yang

Consistent in-focus input imagery is an essential precondition for machine vision systems to perceive the dynamic environment. A defocus blur severely degrades the performance of vision systems. To tackle this problem, we propose a…

图像与视频处理 · 电气工程与系统科学 2021-03-11 Jisheng Li , Qi Dai , Jiangtao Wen