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This paper proposes a new parallel approach to solve connected components on a 2D binary image implemented with CUDA. We employ the following strategies to accelerate neighborhood exploration after dividing an input image into independent…

Computer Vision and Pattern Recognition · Computer Science 2018-01-29 Jun Chen , Keisuke Nonaka , Ryosuke Watanabe , Hiroshi Sankoh , Houari Sabirin , Sei Naito

This paper presents a novel road damage detection algorithm based on unsupervised disparity map segmentation. Firstly, a disparity map is transformed by minimizing an energy function with respect to stereo rig roll angle and road disparity…

Computer Vision and Pattern Recognition · Computer Science 2019-10-14 Rui Fan , Ming Liu

Models for semantic segmentation require a large amount of hand-labeled training data which is costly and time-consuming to produce. For this purpose, we present a label fusion framework that is capable of improving semantic pixel labels of…

Computer Vision and Pattern Recognition · Computer Science 2022-02-25 Florian Fervers , Timo Breuer , Gregor Stachowiak , Sebastian Bullinger , Christoph Bodensteiner , Michael Arens

We present a conceptually simple self-supervised method for saliency detection. Our method generates and uses pseudo-ground truth labels for training. The generated pseudo-GT labels don't require any kind of human annotations (e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-10 Rajeev Yasarla , Renliang Weng , Wongun Choi , Vishal Patel , Amir Sadeghian

In recent years, semi-supervised learning (SSL) has shown tremendous success in leveraging unlabeled data to improve the performance of deep learning models, which significantly reduces the demand for large amounts of labeled data. Many SSL…

Machine Learning · Computer Science 2020-06-02 Song-Bo Yang , Tian-li Yu

Stereo superpixel segmentation aims at grouping the discretizing pixels into perceptual regions through left and right views more collaboratively and efficiently. Existing superpixel segmentation algorithms mostly utilize color and spatial…

Computer Vision and Pattern Recognition · Computer Science 2022-08-18 Hua Li , Junyan Liang , Ruiqi Wu , Runmin Cong , Junhui Wu , Sam Tak Wu Kwong

Most of the state-of-the-art semantic segmentation reported in recent years is based on fully supervised deep learning in the medical domain. How?ever, the high-quality annotated datasets require intense labor and domain knowledge,…

Image and Video Processing · Electrical Eng. & Systems 2022-04-25 Pingping Dai , Haiming Zhu , Shuang Ge , Ruihan Zhang , Xiang Qian , Xi Li , Kehong Yuan

Several approaches have been proposed to solve the spectral unmixing problem in hyperspectral image analysis. Among them the use of sparse regression techniques aims to characterize the abundances in pixels based on a large library of…

Image and Video Processing · Electrical Eng. & Systems 2021-02-12 L. C. Ayres , S. J. M. de Almeida , J. C. M. Bermudez , R. A. Borsoi

This paper tackles a new photometric stereo task, named universal photometric stereo. Unlike existing tasks that assumed specific physical lighting models; hence, drastically limited their usability, a solution algorithm of this task is…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Satoshi Ikehata

Recently sparse coding have been highly successful in image classification mainly due to its capability of incorporating the sparsity of image representation. In this paper, we propose an improved sparse coding model based on linear spatial…

Computer Vision and Pattern Recognition · Computer Science 2015-04-28 Chengqiang Bao , Liangtian He , Yilun Wang

Recent convolutional neural networks, especially end-to-end disparity estimation models, achieve remarkable performance on stereo matching task. However, existed methods, even with the complicated cascade structure, may fail in the regions…

Computer Vision and Pattern Recognition · Computer Science 2018-09-25 Xiao Song , Xu Zhao , Hanwen Hu , Liangji Fang

We present the design of a productionized end-to-end stereo depth sensing system that does pre-processing, online stereo rectification, and stereo depth estimation with a fallback to monocular depth estimation when rectification is…

Estimating depth from images nowadays yields outstanding results, both in terms of in-domain accuracy and generalization. However, we identify two main challenges that remain open in this field: dealing with non-Lambertian materials and…

Computer Vision and Pattern Recognition · Computer Science 2024-01-31 Pierluigi Zama Ramirez , Alex Costanzino , Fabio Tosi , Matteo Poggi , Samuele Salti , Stefano Mattoccia , Luigi Di Stefano

Recent supervised multi-view depth estimation networks have achieved promising results. Similar to all supervised approaches, these networks require ground-truth data during training. However, collecting a large amount of multi-view depth…

Computer Vision and Pattern Recognition · Computer Science 2021-04-08 Jiayu Yang , Jose M. Alvarez , Miaomiao Liu

Almost all existing deep learning approaches for semantic segmentation tackle this task as a pixel-wise classification problem. Yet humans understand a scene not in terms of pixels, but by decomposing it into perceptual groups and…

Computer Vision and Pattern Recognition · Computer Science 2019-10-31 Jyh-Jing Hwang , Stella X. Yu , Jianbo Shi , Maxwell D. Collins , Tien-Ju Yang , Xiao Zhang , Liang-Chieh Chen

Despite the remarkable progress facilitated by learning-based stereo-matching algorithms, disparity estimation in low-texture, occluded, and bordered regions still remains a bottleneck that limits the performance. To tackle these…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Zihua Liu , Songyan Zhang , Zhicheng Wang , Masatoshi Okutomi

Self-supervised depth estimation algorithms rely heavily on frame-warping relationships, exhibiting substantial performance degradation when applied in challenging circumstances, such as low-visibility and nighttime scenarios with varying…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Madhu Vankadari , Samuel Hodgson , Sangyun Shin , Kaichen Zhou Andrew Markham , Niki Trigoni

Speaker identification in the household scenario (e.g., for smart speakers) is typically based on only a few enrollment utterances but a much larger set of unlabeled data, suggesting semisupervised learning to improve speaker profiles. We…

Sound · Computer Science 2022-02-22 Long Chen , Venkatesh Ravichandran , Andreas Stolcke

Segmentation of objects of interest is one of the central tasks in medical image analysis, which is indispensable for quantitative analysis. When developing machine-learning based methods for automated segmentation, manual annotations are…

Computer Vision and Pattern Recognition · Computer Science 2020-07-20 Hang Li , Dong Wei , Shilei Cao , Kai Ma , Liansheng Wang , Yefeng Zheng

We present a fast, differentiable, GPU-accelerated optimization method for ray path tracing in environments containing planar reflectors and straight diffraction edges. Based on Fermat's principle, our approach reformulates the path-finding…

Signal Processing · Electrical Eng. & Systems 2026-01-01 Jérome Eertmans , Sophie Lequeu , Benoît Legat , Laurent Jacques , Claude Oestges