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Complex non-convex ad hoc networks (CNCAH) contain intersecting polygons and edges. In many instances, the layouts of these networks are not entirely convex in shape. In this article, we propose a Kamada-Kawai-based algorithm called W-KK-MS…

Networking and Internet Architecture · Computer Science 2022-04-01 Se-Hang Cheong , Yain-Whar Si

Force-directed algorithms such as the Kamada-Kawai algorithm have shown promising results for solving the boundary detection problem in a mobile ad hoc network. However, the classical Kamada-Kawai algorithm does not scale well when it is…

Networking and Internet Architecture · Computer Science 2015-08-24 Se-Hang Cheong , Yain-Whar Si

We propose two novel algorithms for distributed and location-free boundary recognition in wireless sensor networks. Both approaches enable a node to decide autonomously whether it is a boundary node, based solely on connectivity information…

Data Structures and Algorithms · Computer Science 2011-03-10 Dennis Schieferdecker , Markus Völker , Dorothea Wagner

We present CT-Bound, a robust and fast boundary detection method for very noisy images using a hybrid Convolution and Transformer neural network. The proposed architecture decomposes boundary estimation into two tasks: local detection and…

Computer Vision and Pattern Recognition · Computer Science 2024-06-26 Wei Xu , Junjie Luo , Qi Guo

The demand for on-device document recognition systems increases in conjunction with the emergence of more strict privacy and security requirements. In such systems, there is no data transfer from the end device to a third-party information…

Computer Vision and Pattern Recognition · Computer Science 2021-09-27 D. V. Tropin , A. M. Ershov , D. P. Nikolaev , V. V. Arlazarov

Organization, scalability and routing have been identified as key problems hindering viability and commercial success of mobile ad hoc networks. Clustering of mobile nodes among separate domains has been proposed as an efficient approach to…

Distributed, Parallel, and Cluster Computing · Computer Science 2011-09-20 Damianos Gavalas , Grammati Pantziou , Charalampos Konstantopoulos , Basilis Mamalis

In this paper, we propose an ad-hoc on-demand distance vector routing algorithm for mobile ad-hoc networks taking into account node mobility. Changeable topology of such mobile ad-hoc networks provokes overhead messages in order to search…

Networking and Internet Architecture · Computer Science 2017-06-30 Trung Kien Vu , Sungoh Kwon

Camouflaged object detection (COD) aims to identify objects in images that are well hidden in the environment due to their high similarity to the background in terms of texture and color. However, existing most boundary-guided camouflage…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Junmin Cai , Han Sun , Ningzhong Liu

Multihop ad hoc wireless networks consist of mobile nodes that communicate with each other without any fixed infrastructure. The nodes in these networks are power constrained, since they operate in limited battery energy. Cooperative…

Networking and Internet Architecture · Computer Science 2014-06-23 Preetha Theresa Joy , K. Poulose Jacob

Network-Wide Broadcast (NWB) is a common operation in Mobile Ad hoc Networks (MANETs) used by routing protocols to discover routes and in group communication operations. NWB is commonly performed via flooding, which has been shown to be…

Networking and Internet Architecture · Computer Science 2007-05-23 Paul Rogers , Nael Abu-Ghazaleh

Convolutional neural networks (CNNs) handle the case where filters extend beyond the image boundary using several heuristics, such as zero, repeat or mean padding. These schemes are applied in an ad-hoc fashion and, being weakly related to…

Computer Vision and Pattern Recognition · Computer Science 2018-05-09 Carlo Innamorati , Tobias Ritschel , Tim Weyrich , Niloy J. Mitra

Boundary point detection aims to outline the external contour structure of clusters and enhance the inter-cluster discrimination, thus bolstering the performance of the downstream classification and clustering tasks. However, existing…

Machine Learning · Computer Science 2025-02-26 Dehua Peng , Zhipeng Gui , Jie Gui , Huayi Wu

High-Definition (HD) maps can provide precise geometric and semantic information of static traffic environments for autonomous driving. Road-boundary is one of the most important information contained in HD maps since it distinguishes…

Computer Vision and Pattern Recognition · Computer Science 2022-02-08 Zhenhua Xu , Yuxuan Liu , Lu Gan , Xiangcheng Hu , Yuxiang Sun , Ming Liu , Lujia Wang

Extracting high-level structural information from 3D point clouds is challenging but essential for tasks like urban planning or autonomous driving requiring an advanced understanding of the scene at hand. Existing approaches are still not…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Lukas Bode , Michael Weinmann , Reinhard Klein

Motion boundary detection is a crucial yet challenging problem. Prior methods focus on analyzing the gradients and distributions of optical flow fields, or use hand-crafted features for motion boundary learning. In this paper, we propose…

Computer Vision and Pattern Recognition · Computer Science 2018-04-16 Xiaoqing Yin , Xiyang Dai , Xinchao Wang , Maojun Zhang , Dacheng Tao , Larry Davis

For improving the efficiency and the reliability of the opportunistic routing algorithm, in this paper, we propose the cross-layer and reliable opportunistic routing algorithm (CBRT) for Mobile Ad Hoc Networks, which introduces the improved…

Networking and Internet Architecture · Computer Science 2018-05-22 Ning Li , Jose-Fernan Martinez-Ortega , Vicente Hernandez Diaz

Security in Mobile Ad hoc Network (MANET) is one of the key challenges due to its special features e.g. hop-by-hop communications, dynamic topology, and open network boundary that received tremendous attention by scholars. Traditional…

Networking and Internet Architecture · Computer Science 2017-12-11 Ali Dorri , Soroush Vaseghi , Omid Gharib

A crucial issue for a mobile ad hoc network is the handling of a large number of nodes. As more nodes join the mobile ad hoc network, contention and congestion are more likely. The on demand routing protocols which broadcasts control…

Networking and Internet Architecture · Computer Science 2010-10-01 Sharmila Sankar , Dr. V. Sankaranarayanan

Previous work on ad hoc network capacity has focused primarily on source-destination throughput requirements for different models and transmission scenarios, with an emphasis on delay tolerant applications. In such problems, network…

Information Theory · Computer Science 2007-07-13 Cristina Comaniciu , H. Vincent Poor

We present Convolutional Oriented Boundaries (COB), which produces multiscale oriented contours and region hierarchies starting from generic image classification Convolutional Neural Networks (CNNs). COB is computationally efficient,…

Computer Vision and Pattern Recognition · Computer Science 2017-05-01 Kevis-Kokitsi Maninis , Jordi Pont-Tuset , Pablo Arbeláez , Luc Van Gool
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