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Nowadays 360 video analysis has become a significant research topic in the field since the appearance of high-quality and low-cost 360 wearable devices. In this paper, we propose a novel LiteFlowNet360 architecture for 360 videos optical…

Computer Vision and Pattern Recognition · Computer Science 2020-10-19 Keshav Bhandari , Ziliang Zong , Yan Yan

Sparse optical flow is widely used in various computer vision tasks, however assuming brightness consistency limits its performance in High Dynamic Range (HDR) environments. In this work, a lightweight network is used to extract…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Yicheng Lin , Shuo Wang , Yunlong Jiang , Bin Han

Recent work has shown that optical flow estimation can be formulated as a supervised learning task and can be successfully solved with convolutional networks. Training of the so-called FlowNet was enabled by a large synthetically generated…

Computer Vision and Pattern Recognition · Computer Science 2018-01-18 Nikolaus Mayer , Eddy Ilg , Philip Häusser , Philipp Fischer , Daniel Cremers , Alexey Dosovitskiy , Thomas Brox

Nano quadcopters are small, agile, and cheap platforms that are well suited for deployment in narrow, cluttered environments. Due to their limited payload, these vehicles are highly constrained in processing power, rendering conventional…

Robotics · Computer Science 2022-09-16 Rik J. Bouwmeester , Federico Paredes-Vallés , Guido C. H. E. de Croon

Existing recurrent optical flow estimation networks are computationally expensive since they use a fixed large number of iterations to update the flow field for each sample. An efficient network should skip iterations when the flow…

Computer Vision and Pattern Recognition · Computer Science 2024-01-08 Ri Cheng , Ruian He , Xuhao Jiang , Shili Zhou , Weimin Tan , Bo Yan

Even with the recent advances in convolutional neural networks (CNN) in various visual recognition tasks, the state-of-the-art action recognition system still relies on hand crafted motion feature such as optical flow to achieve the best…

Computer Vision and Pattern Recognition · Computer Science 2018-02-20 Joe Yue-Hei Ng , Jonghyun Choi , Jan Neumann , Larry S. Davis

Deep convolutional neural networks (DCNN) have recently shown promising results in low-level computer vision problems such as optical flow and disparity estimation, but still, have much room to further improve their performance. In this…

Computer Vision and Pattern Recognition · Computer Science 2018-10-12 Juan Luis Gonzalez , Muhammad Sarmad , Hyunjoo J. Lee , Munchurl Kim

Optical flow estimation with convolutional neural networks (CNNs) has recently solved various tasks of computer vision successfully. In this paper we adapt a state-of-the-art approach for optical flow estimation to omnidirectional images.…

Computer Vision and Pattern Recognition · Computer Science 2018-12-07 André Apitzsch , Roman Seidel , Gangolf Hirtz

To design fast neural networks, many works have been focusing on reducing the number of floating-point operations (FLOPs). We observe that such reduction in FLOPs, however, does not necessarily lead to a similar level of reduction in…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Jierun Chen , Shiu-hong Kao , Hao He , Weipeng Zhuo , Song Wen , Chul-Ho Lee , S. -H. Gary Chan

This paper introduces EfficientNetV2, a new family of convolutional networks that have faster training speed and better parameter efficiency than previous models. To develop this family of models, we use a combination of training-aware…

Computer Vision and Pattern Recognition · Computer Science 2021-06-25 Mingxing Tan , Quoc V. Le

Optical flow estimation is a classical yet challenging task in computer vision. One of the essential factors in accurately predicting optical flow is to alleviate occlusions between frames. However, it is still a thorny problem for current…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Shangkun Sun , Yuanqi Chen , Yu Zhu , Guodong Guo , Ge Li

In the recent years, the domain of fast flow field prediction has been vastly dominated by pixel-based convolutional neural networks. Yet, the recent advent of graph convolutional neural networks (GCNNs) have attracted a considerable…

Fluid Dynamics · Physics 2021-12-22 Junfeng Chen , Elie Hachem , Jonathan Viquerat

We propose a lightweight CPU network based on the MKLDNN acceleration strategy, named PP-LCNet, which improves the performance of lightweight models on multiple tasks. This paper lists technologies which can improve network accuracy while…

Computer Vision and Pattern Recognition · Computer Science 2021-10-01 Cheng Cui , Tingquan Gao , Shengyu Wei , Yuning Du , Ruoyu Guo , Shuilong Dong , Bin Lu , Ying Zhou , Xueying Lv , Qiwen Liu , Xiaoguang Hu , Dianhai Yu , Yanjun Ma

The proposed RMS-FlowNet++ is a novel end-to-end learning-based architecture for accurate and efficient scene flow estimation that can operate on high-density point clouds. For hierarchical scene f low estimation, existing methods rely on…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Ramy Battrawy , René Schuster , Didier Stricker

Classical approaches for estimating optical flow have achieved rapid progress in the last decade. However, most of them are too slow to be applied in real-time video analysis. Due to the great success of deep learning, recent work has…

Computer Vision and Pattern Recognition · Computer Science 2017-07-21 Yi Zhu , Shawn Newsam

In recent years, using a deep convolutional neural network (CNN) as a feature encoder (or backbone) is the most commonly observed architectural pattern in several computer vision methods, and semantic segmentation is no exception. The two…

Computer Vision and Pattern Recognition · Computer Science 2021-09-22 Venkata Satya Sai Ajay Daliparthi

This paper introduces a novel neural network - flow completion network (FCN) - to infer the fluid dynamics, includ-ing the flow field and the force acting on the body, from the incomplete data based on Graph Convolution AttentionNetwork.…

Fluid Dynamics · Physics 2022-08-24 Xiaodong He , Yinan Wang , Juan Li

Flow estimation problems are ubiquitous in scientific imaging. Often, the underlying flows are subject to physical constraints that can be exploited in the flow estimation; for example, incompressible (divergence-free) flows are expected…

Machine Learning · Computer Science 2024-06-14 Miao Qi , Ramzi Idoughi , Wolfgang Heidrich

Standard frame-based cameras that sample light intensity frames are heavily impacted by motion blur for high-speed motion and fail to perceive scene accurately when the dynamic range is high. Event-based cameras, on the other hand, overcome…

Computer Vision and Pattern Recognition · Computer Science 2021-03-22 Chankyu Lee , Adarsh Kumar Kosta , Kaushik Roy

Event-based cameras display great potential for a variety of tasks such as high-speed motion detection and navigation in low-light environments where conventional frame-based cameras suffer critically. This is attributed to their high…

Neural and Evolutionary Computing · Computer Science 2020-09-16 Chankyu Lee , Adarsh Kumar Kosta , Alex Zihao Zhu , Kenneth Chaney , Kostas Daniilidis , Kaushik Roy