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Image-based 3D reconstruction is one of the most important tasks in Computer Vision with many solutions proposed over the last few decades. The objective is to extract metric information i.e. the geometry of scene objects directly from…

Computer Vision and Pattern Recognition · Computer Science 2022-09-16 Qiao Chen , Charalambos Poullis

Stereo matching plays a crucial role in 3D perception and scenario understanding. Despite the proliferation of promising methods, addressing texture-less and texture-repetitive conditions remains challenging due to the insufficient…

Computer Vision and Pattern Recognition · Computer Science 2024-02-28 Tong Zhao , Mingyu Ding , Wei Zhan , Masayoshi Tomizuka , Yintao Wei

Recently, deep convolutional neural networks have achieved great success for medical image segmentation. However, unlike segmentation of natural images, most medical images such as MRI and CT are volumetric data. In order to make full use…

Image and Video Processing · Electrical Eng. & Systems 2022-02-08 Yichi Zhang , Qingcheng Liao , Le Ding , Jicong Zhang

Estimating depth from RGB images is a long-standing ill-posed problem, which has been explored for decades by the computer vision, graphics, and machine learning communities. Among the existing techniques, stereo matching remains one of the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-26 Hamid Laga , Laurent Valentin Jospin , Farid Boussaid , Mohammed Bennamoun

Recent cost volume pyramid based deep neural networks have unlocked the potential of efficiently leveraging high-resolution images for depth inference from multi-view stereo. In general, those approaches assume that the depth of each pixel…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Jiayu Yang , Jose M. Alvarez , Miaomiao Liu

We introduce Double Cost Volume Stereo Matching Network(DCVSMNet) which is a novel architecture characterised by by two small upper (group-wise) and lower (norm correlation) cost volumes. Each cost volume is processed separately, and a…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Mahmoud Tahmasebi , Saif Huq , Kevin Meehan , Marion McAfee

Deep convolutional neural networks (CNNs) have been intensively used for multi-class segmentation of data from different modalities and achieved state-of-the-art performances. However, a common problem when dealing with large, high…

Computer Vision and Pattern Recognition · Computer Science 2018-04-13 Chengjia Wang , Tom MacGillivray , Gillian Macnaught , Guang Yang , David Newby

We propose a learning-based multi-view stereo (MVS) method in scattering media, such as fog or smoke, with a novel cost volume, called the dehazing cost volume. Images captured in scattering media are degraded due to light scattering and…

Computer Vision and Pattern Recognition · Computer Science 2020-12-03 Yuki Fujimura , Motoharu Sonogashira , Masaaki Iiyama

Depth estimation from a single image is a fundamental problem in computer vision. In this paper, we propose a simple yet effective convolutional spatial propagation network (CSPN) to learn the affinity matrix for depth prediction.…

Computer Vision and Pattern Recognition · Computer Science 2018-08-02 Xinjing Cheng , Peng Wang , Ruigang Yang

Conventional 2D Convolutional Neural Networks (CNN) extract features from an input image by applying linear filters. These filters compute the spatial coherence by weighting the photometric information on a fixed neighborhood without taking…

Computer Vision and Pattern Recognition · Computer Science 2020-09-24 Zongwei Wu , Guillaume Allibert , Christophe Stolz , Cedric Demonceaux

Semantic correspondence, the task of determining relationships between different parts of images, underpins various applications including 3D reconstruction, image-to-image translation, object tracking, and visual place recognition. Recent…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Frank Fundel , Johannes Schusterbauer , Vincent Tao Hu , Björn Ommer

To reconstruct a 3D scene from a set of calibrated views, traditional multi-view stereo techniques rely on two distinct stages: local depth maps computation and global depth maps fusion. Recent studies concentrate on deep neural…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Jaesung Choe , Sunghoon Im , Francois Rameau , Minjun Kang , In So Kweon

The area of computer vision is one of the most discussed topics amongst many scholars, and stereo matching is its most important sub fields. After the parallax map is transformed into a depth map, it can be applied to many intelligent…

Computer Vision and Pattern Recognition · Computer Science 2021-05-25 Hewei Wang , Muhammad Salman Pathan , Soumyabrata Dev

Stereo dense image matching can be categorized to low-level feature based matching and deep feature based matching according to their matching cost metrics. Census has been proofed to be one of the most efficient low-level feature based…

Computer Vision and Pattern Recognition · Computer Science 2019-05-23 Bihe Chen , Rongjun Qin , Xu Huang , Shuang Song , Xiaohu Lu

We propose a novel deep learning architecture for regressing disparity from a rectified pair of stereo images. We leverage knowledge of the problem's geometry to form a cost volume using deep feature representations. We learn to incorporate…

Computer Vision and Pattern Recognition · Computer Science 2017-03-14 Alex Kendall , Hayk Martirosyan , Saumitro Dasgupta , Peter Henry , Ryan Kennedy , Abraham Bachrach , Adam Bry

Depth estimation, as a necessary clue to convert 2D images into the 3D space, has been applied in many machine vision areas. However, to achieve an entire surrounding 360-degree geometric sensing, traditional stereo matching algorithms for…

Computer Vision and Pattern Recognition · Computer Science 2021-09-22 Keyang Zhou , Kailun Yang , Kaiwei Wang

We propose a novel lightweight network for stereo estimation. Our network consists of a fully-convolutional densely connected neural network (FC-DCNN) that computes matching costs between rectified image pairs. Our FC-DCNN method learns…

Computer Vision and Pattern Recognition · Computer Science 2020-10-15 Dominik Hirner , Friedrich Fraundorfer

Existing deep learning based stereo matching methods either focus on achieving optimal performances on the target dataset while with poor generalization for other datasets or focus on handling the cross-domain generalization by suppressing…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Zhelun Shen , Yuchao Dai , Xibin Song , Zhibo Rao , Dingfu Zhou , Liangjun Zhang

Gross tumor volume (GTV) delineation on tomography medical imaging is crucial for radiotherapy planning and cancer diagnosis. Convolutional neural networks (CNNs) has been predominated on automatic 3D medical segmentation tasks, including…

Image and Video Processing · Electrical Eng. & Systems 2020-12-15 Chun-Hung Chao , Hsien-Tzu Cheng , Tsung-Ying Ho , Le Lu , Min Sun

Stereo matching is essential for robot navigation. However, the accuracy of current widely used traditional methods is low, while methods based on CNN need expensive computational cost and running time. This is because different cost…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Xiaogang Jia , Wei Chen , Zhengfa Liang , Mingfei Wu , Yusong Tan , Libo Huang