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Video stabilization is a fundamental and important technique for higher quality videos. Prior works have extensively explored video stabilization, but most of them involve cropping of the frame boundaries and introduce moderate levels of…

计算机视觉与模式识别 · 计算机科学 2019-09-09 Jinsoo Choi , In So Kweon

We demonstrate a multi-lidar calibration framework for large mobile platforms that jointly calibrate the extrinsic parameters of non-overlapping Field-of-View (FoV) lidar sensors, without the need for any external calibration aid. The…

机器人学 · 计算机科学 2023-09-14 Sandipan Das , Navid Mahabadi , Addi Djikic , Cesar Nassir , Saikat Chatterjee , Maurice Fallon

Turbulence-degraded image frames are distorted by both turbulent deformations and space-time-varying blurs. To suppress these effects, we propose a multi-frame reconstruction scheme to recover a latent image from the observed image…

计算机视觉与模式识别 · 计算机科学 2017-12-12 Chun Pong Lau , Yu Hin Lai , Lok Ming Lui

We propose a new structure-from-motion framework to recover accurate camera poses and point clouds from unordered images. Traditional SfM systems typically rely on the successful detection of repeatable keypoints across multiple views as…

计算机视觉与模式识别 · 计算机科学 2023-06-28 Xingyi He , Jiaming Sun , Yifan Wang , Sida Peng , Qixing Huang , Hujun Bao , Xiaowei Zhou

Bayesian calibration is widely used for inverse analysis and uncertainty analysis for complex systems in the presence of both computer models and observation data. In the present work, we focus on large-scale fluid-structure interaction…

数值分析 · 数学 2022-01-03 Shunxiang Cao , Daniel Zhengyu Huang

Reconstructing high-quality 3D models from sparse 2D images has garnered significant attention in computer vision. Recently, 3D Gaussian Splatting (3DGS) has gained prominence due to its explicit representation with efficient training speed…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Keng-Wei Chang , Zi-Ming Wang , Shang-Hong Lai

One of the solutions of depth imaging of moving scene is to project a static pattern on the object and use just a single image for reconstruction. However, if the motion of the object is too fast with respect to the exposure time of the…

计算机视觉与模式识别 · 计算机科学 2017-10-03 Yuki Shiba , Satoshi Ono , Ryo Furukawa , Shinsaku Hiura , Hiroshi Kawasaki

Calibration of multi-camera systems, i.e. determining the relative poses between the cameras, is a prerequisite for many tasks in computer vision and robotics. Camera calibration is typically achieved using offline methods that use…

计算机视觉与模式识别 · 计算机科学 2022-09-16 Bastian Pätzold , Simon Bultmann , Sven Behnke

This paper proposes a new extrinsic calibration of kaleidoscopic imaging system by estimating normals and distances of the mirrors. The problem to be solved in this paper is a simultaneous estimation of all mirror parameters consistent…

计算机视觉与模式识别 · 计算机科学 2017-05-30 Kosuke Takahashi , Akihiro Miyata , Shohei Nobuhara , Takashi Matsuyama

We introduce a novel method to obtain high-quality 3D reconstructions from consumer RGB-D sensors. Our core idea is to simultaneously optimize for geometry encoded in a signed distance field (SDF), textures from automatically-selected…

计算机视觉与模式识别 · 计算机科学 2017-08-08 Robert Maier , Kihwan Kim , Daniel Cremers , Jan Kautz , Matthias Nießner

Event cameras are a new type of sensors that are different from traditional cameras. Each pixel is triggered asynchronously by event. The trigger event is the change of the brightness irradiated on the pixel. If the increment or decrement…

计算机视觉与模式识别 · 计算机科学 2022-03-24 Kun Xiao , Guohui Wang , Yi Chen , Jinghong Nan , Yongfeng Xie

Self-supervised multi-frame depth estimation achieves high accuracy by computing matching costs of pixel correspondences between adjacent frames, injecting geometric information into the network. These pixel-correspondence candidates are…

计算机视觉与模式识别 · 计算机科学 2024-04-08 Antyanta Bangunharcana , Ahmed Magd , Kyung-Soo Kim

While current multi-frame restoration methods combine information from multiple input images using 2D alignment techniques, recent advances in novel view synthesis are paving the way for a new paradigm relying on volumetric scene…

计算机视觉与模式识别 · 计算机科学 2023-04-06 Thomas Tanay , Aleš Leonardis , Matteo Maggioni

This paper presents a novel calibration algorithm for Multi-Focus Plenoptic Cameras (MFPCs) using raw images only. The design of such cameras is usually complex and relies on precise placement of optic elements. Several calibration…

图像与视频处理 · 电气工程与系统科学 2021-11-10 Mathieu Labussière , Céline Teulière , Frédéric Bernardin , Omar Ait-Aider

We proposed a novel approach to coherent imaging of dynamic samples. The inter-frame similarity of the sample's local structures is found to be a powerful constraint in phasing a sequence of diffraction patterns. We devised a new image…

光学 · 物理学 2024-07-11 Pengju Sheng , Fucai Zhang

Self-supervised methods have showed promising results on depth estimation task. However, previous methods estimate the target depth map and camera ego-motion simultaneously, underusing multi-frame correlation information and ignoring the…

计算机视觉与模式识别 · 计算机科学 2023-03-21 Songchun Zhang , Chunhui Zhao

This paper introduces a general approach to dynamic scene reconstruction from multiple moving cameras without prior knowledge or limiting constraints on the scene structure, appearance, or illumination. Existing techniques for dynamic scene…

计算机视觉与模式识别 · 计算机科学 2015-10-01 Armin Mustafa , Hansung Kim , Jean-Yves Guillemaut , Adrian Hilton

We introduce new linear mathematical formulations to calculate the focal length of a camera in an active platform. Through mathematical derivations, we show that the focal lengths in each direction can be estimated using only one point…

计算机视觉与模式识别 · 计算机科学 2018-06-12 Mehdi Faraji , Anup Basu

Multi-camera systems have been shown to improve the accuracy and robustness of SLAM estimates, yet state-of-the-art SLAM systems predominantly support monocular or stereo setups. This paper presents a generic sparse visual SLAM framework…

机器人学 · 计算机科学 2024-05-10 Pushyami Kaveti , Shankara Narayanan Vaidyanathan , Arvind Thamilchelvan , Hanumant Singh

Video Frame Interpolation (VFI) is a crucial technique in various applications such as slow-motion generation, frame rate conversion, video frame restoration etc. This paper introduces an efficient video frame interpolation framework that…

计算机视觉与模式识别 · 计算机科学 2024-04-18 Tong Shen , Dong Li , Ziheng Gao , Lu Tian , Emad Barsoum