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Future frame prediction in videos is a promising avenue for unsupervised video representation learning. Video frames are naturally generated by the inherent pixel flows from preceding frames based on the appearance and motion dynamics in…

计算机视觉与模式识别 · 计算机科学 2017-08-04 Xiaodan Liang , Lisa Lee , Wei Dai , Eric P. Xing

Semi-supervised video anomaly detection (VAD) methods formulate the task of anomaly detection as detection of deviations from the learned normal patterns. Previous works in the field (reconstruction or prediction-based methods) suffer from…

计算机视觉与模式识别 · 计算机科学 2022-05-05 Mohammad Baradaran , Robert Bergevin

Real-time occlusion handling is a major problem in outdoor mixed reality system because it requires great computational cost mainly due to the complexity of the scene. Using only segmentation, it is difficult to accurately render a virtual…

计算机视觉与模式识别 · 计算机科学 2017-08-01 Menandro Roxas , Tomoki Hori , Taiki Fukiage , Yasuhide Okamoto , Takeshi Oishi

3D understanding and rendering of moving humans from monocular videos is a challenging task. Despite recent progress, the task remains difficult in real-world scenarios, where obstacles may block the camera view and cause partial occlusions…

计算机视觉与模式识别 · 计算机科学 2023-08-10 Tiange Xiang , Adam Sun , Jiajun Wu , Ehsan Adeli , Li Fei-Fei

This paper deals with the scarcity of data for training optical flow networks, highlighting the limitations of existing sources such as labeled synthetic datasets or unlabeled real videos. Specifically, we introduce a framework to generate…

计算机视觉与模式识别 · 计算机科学 2021-04-09 Filippo Aleotti , Matteo Poggi , Stefano Mattoccia

This paper proposes an end-to-end trainable network, SegFlow, for simultaneously predicting pixel-wise object segmentation and optical flow in videos. The proposed SegFlow has two branches where useful information of object segmentation and…

计算机视觉与模式识别 · 计算机科学 2017-09-21 Jingchun Cheng , Yi-Hsuan Tsai , Shengjin Wang , Ming-Hsuan Yang

Optical flow estimation can be formulated as an end-to-end supervised learning problem, which yields estimates with a superior accuracy-runtime tradeoff compared to alternative methodology. In this paper, we make such networks estimate…

计算机视觉与模式识别 · 计算机科学 2018-12-21 Eddy Ilg , Özgün Çiçek , Silvio Galesso , Aaron Klein , Osama Makansi , Frank Hutter , Thomas Brox

The matching function for the problem of stereo reconstruction or optical flow has been traditionally designed as a function of the distance between the features describing matched pixels. This approach works under assumption, that the…

计算机视觉与模式识别 · 计算机科学 2015-02-04 Ľubor Ladický , Christian Häne , Marc Pollefeys

Unsupervised methods have showed promising results on monocular depth estimation. However, the training data must be captured in scenes without moving objects. To push the envelope of accuracy, recent methods tend to increase their model…

计算机视觉与模式识别 · 计算机科学 2023-03-09 Tak-Wai Hui

One of the possible dangers that older people face in their daily lives is falling. Occlusion is one of the biggest challenges of vision-based fall detection systems and degrades their detection performance considerably. To tackle this…

计算机视觉与模式识别 · 计算机科学 2022-08-16 Sara Khalili , Hoda Mohammadzade , Mohammad Mahdi Ahmadi

In this paper we propose USegScene, a framework for semantically guided unsupervised learning of depth, optical flow and ego-motion estimation for stereo camera images using convolutional neural networks. Our framework leverages semantic…

计算机视觉与模式识别 · 计算机科学 2022-07-18 Johan Vertens , Wolfram Burgard

We propose MONet, a convolutional neural network that jointly detects motion boundaries (MBs) and occlusion regions (Occs) in video both forward and backward in time. Detection is difficult because optical flow is discontinuous along MBs…

计算机视觉与模式识别 · 计算机科学 2021-11-03 Hannah Halin Kim , Shuzhi Yu , Carlo Tomasi

Motion representation plays a vital role in human action recognition in videos. In this study, we introduce a novel compact motion representation for video action recognition, named Optical Flow guided Feature (OFF), which enables the…

计算机视觉与模式识别 · 计算机科学 2018-07-10 Shuyang Sun , Zhanghui Kuang , Wanli Ouyang , Lu Sheng , Wei Zhang

Event cameras have the potential to capture continuous motion information over time and space, making them well-suited for optical flow estimation. However, most existing learning-based methods for event-based optical flow adopt frame-based…

计算机视觉与模式识别 · 计算机科学 2025-12-01 Zuntao Liu , Hao Zhuang , Junjie Jiang , Yuhang Song , Zheng Fang

Scene flow estimation is the task to predict the point-wise or pixel-wise 3D displacement vector between two consecutive frames of point clouds or images, which has important application in fields such as service robots and autonomous…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Guangming Wang , Yunzhe Hu , Xinrui Wu , Hesheng Wang

We propose a novel training-free image generation algorithm that precisely controls the occlusion relationships between objects in an image. Existing image generation methods typically rely on prompts to influence occlusion, which often…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Xiaohang Zhan , Dingming Liu

Optical flow is inherently a 2D search problem, and thus the computational complexity grows quadratically with respect to the search window, making large displacements matching infeasible for high-resolution images. In this paper, we take…

计算机视觉与模式识别 · 计算机科学 2021-08-31 Haofei Xu , Jiaolong Yang , Jianfei Cai , Juyong Zhang , Xin Tong

This paper studies unsupervised monocular depth prediction problem. Most of existing unsupervised depth prediction algorithms are developed for outdoor scenarios, while the depth prediction work in the indoor environment is still very…

计算机视觉与模式识别 · 计算机科学 2019-11-21 Yinglong Feng , Shuncheng Wu , Okan Köpüklü , Xueyang Kang , Federico Tombari

A novel algorithm for video lane detection is proposed in this paper. First, we extract a feature map for a current frame and detect a latent mask for obstacles occluding lanes. Then, we enhance the feature map by developing an…

计算机视觉与模式识别 · 计算机科学 2024-08-15 Dongkwon Jin , Chang-Su Kim

Removing pixel-wise heterogeneous motion blur is challenging due to the ill-posed nature of the problem. The predominant solution is to estimate the blur kernel by adding a prior, but the extensive literature on the subject indicates the…

计算机视觉与模式识别 · 计算机科学 2016-12-09 Dong Gong , Jie Yang , Lingqiao Liu , Yanning Zhang , Ian Reid , Chunhua Shen , Anton van den Hengel , Qinfeng Shi