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Accurate recovery of 3D geometrical surfaces from calibrated 2D multi-view images is a fundamental yet active research area in computer vision. Despite the steady progress in multi-view stereo reconstruction, most existing methods are still…

计算机视觉与模式识别 · 计算机科学 2016-01-20 Zhaoxin Li , Kuanquan Wang , Wangmeng Zuo , Deyu Meng , Lei Zhang

Reconstructing the 3D shape of an object using several images under different light sources is a very challenging task, especially when realistic assumptions such as light propagation and attenuation, perspective viewing geometry and…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Fotios Logothetis , Roberto Mecca , Ignas Budvytis , Roberto Cipolla

Convolutional Neural Network (CNN)-based filters have achieved significant performance in video artifacts reduction. However, the high complexity of existing methods makes it difficult to be applied in real usage. In this paper, a CNN-based…

图像与视频处理 · 电气工程与系统科学 2020-09-08 Chao Liu , Heming Sun , Jiro Katto , Xiaoyang Zeng , Yibo Fan

Purpose: Iterative Convolutional Neural Networks (CNNs) which resemble unrolled learned iterative schemes have shown to consistently deliver state-of-the-art results for image reconstruction problems across different imaging modalities.…

机器学习 · 计算机科学 2022-03-07 Andreas Kofler , Markus Haltmeier , Tobias Schaeffter , Christoph Kolbitsch

With the advent of convolutional neural networks, stereo matching algorithms have recently gained tremendous progress. However, it remains a great challenge to accurately extract disparities from real-world image pairs taken by…

计算机视觉与模式识别 · 计算机科学 2022-03-23 Jiankun Li , Peisen Wang , Pengfei Xiong , Tao Cai , Ziwei Yan , Lei Yang , Jiangyu Liu , Haoqiang Fan , Shuaicheng Liu

Existing fixed pattern noise reduction (FPNR) methods are easily affected by the motion state of the scene and working condition of the image sensor, which leads to over smooth effects, ghosting artifacts as well as slow convergence rate.…

图像与视频处理 · 电气工程与系统科学 2019-10-23 Juntao Guan , Rui Lai , Ai Xiong , Zesheng Liu , Lin Gu

Non-extractive fish abundance estimation with the aid of visual analysis has drawn increasing attention. Unstable illumination, ubiquitous noise and low frame rate video capturing in the underwater environment, however, make conventional…

计算机视觉与模式识别 · 计算机科学 2015-04-16 Meng-Che Chuang , Jenq-Neng Hwang , Kresimir Williams , Richard Towler

Computational stereo has reached a high level of accuracy, but degrades in the presence of occlusions, repeated textures, and correspondence errors along edges. We present a novel approach based on neural networks for depth estimation that…

计算机视觉与模式识别 · 计算机科学 2020-04-01 Yinda Zhang , Neal Wadhwa , Sergio Orts-Escolano , Christian Häne , Sean Fanello , Rahul Garg

This paper introduces single-image geometric and appearance reconstruction from water reflection photography, i.e., images capturing direct and water-reflected real-world scenes. Water reflection offers an additional viewpoint to the direct…

计算机视觉与模式识别 · 计算机科学 2020-01-08 Ryo Kawahara , Meng-Yu Jennifer Kuo , Shohei Nobuhara , Ko Nishino

Today, Multi-View Stereo techniques are able to reconstruct robust and detailed 3D models, especially when starting from high-resolution images. However, there are cases in which the resolution of input images is relatively low, for…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Eugenio Lomurno , Andrea Romanoni , Matteo Matteucci

There is a strong demand on capturing underwater scenes without distortions caused by refraction. Since a light field camera can capture several light rays at each point of an image plane from various directions, if geometrically correct…

图像与视频处理 · 电气工程与系统科学 2019-05-24 Kazuto Ichimaru , Hiroshi Kawasaki

This paper presents a new variational inference framework for image restoration and a convolutional neural network (CNN) structure that can solve the restoration problems described by the proposed framework. Earlier CNN-based image…

图像与视频处理 · 电气工程与系统科学 2022-07-20 Jae Woong Soh , Nam Ik Cho

In an underwater scene, wavelength-dependent light absorption and scattering degrade the visibility of images, causing low contrast and distorted color casts. To address this problem, we propose a convolutional neural network based image…

计算机视觉与模式识别 · 计算机科学 2018-07-11 Saeed Anwar , Chongyi Li , Fatih Porikli

Aiming at the problems of color distortion, blur and excessive noise of underwater image, an underwater image enhancement algorithm based on structure-texture reconstruction is proposed. Firstly, the color equalization of the degraded image…

图像与视频处理 · 电气工程与系统科学 2020-04-14 Sen Lin , Kaichen Chi

Passive depth estimation is among the most long-studied fields in computer vision. The most common methods for passive depth estimation are either a stereo or a monocular system. Using the former requires an accurate calibration process,…

计算机视觉与模式识别 · 计算机科学 2019-10-31 Yotam Gil , Shay Elmalem , Harel Haim , Emanuel Marom , Raja Giryes

Underwater monocular depth estimation serves as the foundation for tasks such as 3D reconstruction of underwater scenes. However, due to the influence of light and medium, the underwater environment undergoes a distinctive imaging process,…

计算机视觉与模式识别 · 计算机科学 2024-07-26 Jian Wang , Jing Wang , Shenghui Rong , Bo He

This paper describes a novel deep learning-based method for mitigating the effects of atmospheric distortion. We have built an end-to-end supervised convolutional neural network (CNN) to reconstruct turbulence-corrupted video sequence. Our…

图像与视频处理 · 电气工程与系统科学 2019-12-25 Jing Gao , N. Anantrasirichai , David Bull

Localization and mapping are core perceptual capabilities for underwater robots. Stereo cameras provide a low-cost means of directly estimating metric depth to support these tasks. However, despite recent advances in stereo depth estimation…

Active stereo cameras that recover depth from structured light captures have become a cornerstone sensor modality for 3D scene reconstruction and understanding tasks across application domains. Existing active stereo cameras project a…

计算机视觉与模式识别 · 计算机科学 2021-05-27 Seung-Hwan Baek , Felix Heide

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