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Hundreds of millions of people routinely take photos using their smartphones as point and shoot (PAS) cameras, yet very few would have the photography skills to compose a good shot of a scene. While traditional PAS cameras have built-in…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Jiawan Li , Fei Zhou , Zhipeng Zhong , Jiongzhi Lin , Guoping Qiu

The increasing demand for augmented reality and robotics is driving the need for articulated object reconstruction with high scalability. However, existing settings for reconstructing from discrete articulation states or casual monocular…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Hang Dai , Hongwei Fan , Han Zhang , Duojin Wu , Jiyao Zhang , Hao Dong

Accurate camera calibration is a well-known and widely used task in computer vision that has been researched for decades. However, the standard approach based on checkerboard calibration patterns has some drawbacks that limit its…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Peer Stelldinger , Nils Schönherr , Justus Biermann

We introduce a method for manifold alignment of different modalities (or domains) of remote sensing images. The problem is recurrent when a set of multitemporal, multisource, multisensor and multiangular images is available. In these…

Computer Vision and Pattern Recognition · Computer Science 2021-04-19 Devis Tuia , Michele Volpi , Maxime Trolliet , Gustau Camps-Valls

This letter presents a novel method to estimate the relative poses between RGB-D cameras with minimal overlapping fields of view in a panoramic RGB-D camera system. This calibration problem is relevant to applications such as indoor 3D…

Image and Video Processing · Electrical Eng. & Systems 2018-09-11 Hang Liu , Hengyu Li , Xiahua Liu , Jun Luo , Shaorong Xie , Yu Sun

This paper presents a new algorithm to estimate absolute camera pose given an axis of the camera's rotation matrix. Current algorithms solve the problem via algebraic solutions on limited input domains. This paper shows that the problem can…

Computer Vision and Pattern Recognition · Computer Science 2024-09-18 Akshay Chandrasekhar

Most approaches to camera calibration rely on calibration targets of well-known geometry. During data acquisition, calibration target and camera system are typically moved w.r.t. each other, to allow image coverage and perspective…

Computer Vision and Pattern Recognition · Computer Science 2021-10-15 Annika Hagemann , Moritz Knorr , Christoph Stiller

Camera calibration is a crucial technique which significantly influences the performance of many robotic systems. Robustness and high precision have always been the pursuit of diverse calibration methods. State-of-the-art calibration…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Yesheng Zhang , Xu Zhao , Dahong Qian

Rotation averaging is a synchronization process on single or multiple rotation groups, and is a fundamental problem in many computer vision tasks such as multi-view structure from motion (SfM). Specifically, rotation averaging involves the…

Computer Vision and Pattern Recognition · Computer Science 2021-02-11 Xinyi Li , Haibin Ling

The process of camera calibration involves estimating the intrinsic and extrinsic parameters, which are essential for accurately performing tasks such as 3D reconstruction, object tracking and augmented reality. In this work, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2024-02-21 Muhammad Waleed , Abdul Rauf , Murtaza Taj

Line scanning cameras, which capture only a single line of pixels, have been increasingly used in ground based mobile or robotic platforms. In applications where it is advantageous to directly georeference the camera data to world…

Robotics · Computer Science 2018-02-13 Alexander Wendel , James Underwood

Purpose: Surgical scene understanding plays a critical role in the technology stack of tomorrow's intervention-assisting systems in endoscopic surgeries. For this, tracking the endoscope pose is a key component, but remains challenging due…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Michel Hayoz , Christopher Hahne , Mathias Gallardo , Daniel Candinas , Thomas Kurmann , Maximilian Allan , Raphael Sznitman

In this paper, we present the novel task of estimating the extrinsic parameters of a virtual camera relative to a real camera in exercise videos with a mirror. This task poses a significant challenge in scenarios where the views from the…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Longyun Liao , Rong Zheng , Andrew Mitchell

Absolute camera pose regressors estimate the position and orientation of a camera from the captured image alone. Typically, a convolutional backbone with a multi-layer perceptron head is trained with images and pose labels to embed a single…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Yoli Shavit , Ron Ferens , Yosi Keller

Most existing human pose estimation (HPE) methods exploit multi-scale information by fusing feature maps of four different spatial sizes, \ie $1/4$, $1/8$, $1/16$, and $1/32$ of the input image. There are two drawbacks of this strategy: 1)…

Computer Vision and Pattern Recognition · Computer Science 2021-07-23 Zhengxiong Luo , Zhicheng Wang , Yan Huang , Liang Wang , Tieniu Tan , Erjin Zhou

Active Multi-Object Tracking (AMOT) is a task where cameras are controlled by a centralized system to adjust their poses automatically and collaboratively so as to maximize the coverage of targets in their shared visual field. In AMOT, each…

Computer Vision and Pattern Recognition · Computer Science 2022-02-23 Zeyu Fang , Jian Zhao , Mingyu Yang , Wengang Zhou , Zhenbo Lu , Houqiang Li

In this paper, we propose a new single shot method for multi-person 3D human pose estimation in complex images. The model jointly learns to locate the human joints in the image, to estimate their 3D coordinates and to group these…

Computer Vision and Pattern Recognition · Computer Science 2021-01-08 Abdallah Benzine , Bertrand Luvison , Quoc Cuong Pham , Catherine Achard

In this paper, we present Adaptive Computation Steps (ACS) algo-rithm, which enables end-to-end speech recognition models to dy-namically decide how many frames should be processed to predict a linguistic output. The model that applies ACS…

Audio and Speech Processing · Electrical Eng. & Systems 2018-09-27 Mohan Li , Min Liu , Masanori Hattori

In contemporary imaging systems, achieving optimal auto-focus (AF) performance hinges on precise lens positioning. Extensive research has delved into refining algorithms for determining the ideal lens position across passive, active, and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Ali Karaoglu

Autonomous vehicles and robots need to operate over a wide variety of scenarios in order to complete tasks efficiently and safely. Multi-camera self-supervised monocular depth estimation from videos is a promising way to reason about the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Takayuki Kanai , Igor Vasiljevic , Vitor Guizilini , Adrien Gaidon , Rares Ambrus