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This paper describes important considerations and challenges associated with online reinforcement-learning based waveform selection for target identification in frequency modulated continuous wave (FMCW) automotive radar systems. We present…

Signal Processing · Electrical Eng. & Systems 2022-12-02 Charles E. Thornton , William W. Howard , R. Michael Buehrer

This technical report describes a practical field test on word-image classification in a very large collection of more than 300 diverse handwritten historical manuscripts, with 1.6 million unique labeled images and more than 11 million…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Lambert Schomaker

In this paper, we revisit the problem of classifying ships (maritime vessels) detected from overhead imagery. Despite the last decade of research on this very important and pertinent problem, it remains largely unsolved. One of the major…

Computer Vision and Pattern Recognition · Computer Science 2019-05-13 Chris M. Ward , Josh Harguess , Cameron Hilton

Continuous Bag of Words (CBOW) is a powerful text embedding method. Due to its strong capabilities to encode word content, CBOW embeddings perform well on a wide range of downstream tasks while being efficient to compute. However, CBOW is…

Computation and Language · Computer Science 2019-02-19 Florian Mai , Lukas Galke , Ansgar Scherp

Due to the prevalence of mobile devices, mobile search becomes a more convenient way than desktop search. Different from the traditional desktop search, mobile visual search needs more consideration for the limited resources on mobile…

Multimedia · Computer Science 2016-06-30 Yin-Hsi Kuo , Winston H. Hsu

Feature representations, both hand-designed and learned ones, are often hard to analyze and interpret, even when they are extracted from visual data. We propose a new approach to study image representations by inverting them with an…

Neural and Evolutionary Computing · Computer Science 2016-04-28 Alexey Dosovitskiy , Thomas Brox

Common and important applications of person identification occur at distances and viewpoints in which the face is not visible or is not sufficiently resolved to be useful. We examine body shape as a biometric across distance and viewpoint…

Computer Vision and Pattern Recognition · Computer Science 2023-05-31 Blake A. Myers , Lucas Jaggernauth , Thomas M. Metz , Matthew Q. Hill , Veda Nandan Gandi , Carlos D. Castillo , Alice J. O'Toole

This study addresses the challenges of multi-label text classification. The difficulties arise from imbalanced data sets, varied text lengths, and numerous subjective feature labels. Existing solutions include traditional machine learning…

Computation and Language · Computer Science 2024-05-22 Hongren Wang

Semantic part localization can facilitate fine-grained categorization by explicitly isolating subtle appearance differences associated with specific object parts. Methods for pose-normalized representations have been proposed, but generally…

Computer Vision and Pattern Recognition · Computer Science 2014-07-16 Ning Zhang , Jeff Donahue , Ross Girshick , Trevor Darrell

We present a novel ship wake simulation system for generating S-band Synthetic Aperture Radar (SAR) images, and demonstrate the use of such imagery for the classification of ships based on their wake signatures via a deep learning approach.…

Image and Video Processing · Electrical Eng. & Systems 2024-02-07 Kamirul Kamirul , Odysseas Pappas , Igor G. Rizaev , Alin Achim

Maritime surveillance is not only necessary for every country, such as in maritime safeguarding and fishing controls, but also plays an essential role in international fields, such as in rescue support and illegal immigration control. Most…

Image and Video Processing · Electrical Eng. & Systems 2023-11-09 Chenwei Wang , Siyi Luo , Jifang Pei , Yulin Huang , Yin Zhang , Jianyu Yang

This paper proposes a simple yet effective approach to learn visual features online for improving loop-closure detection and place recognition, based on bag-of-words frameworks. The approach learns a codeword in bag-of-words model from a…

Computer Vision and Pattern Recognition · Computer Science 2016-11-17 Guangcong Zhang , Mason J. Lilly , Patricio A. Vela

Extensive research efforts have been dedicated to 3D model retrieval in recent decades. Recently, view-based methods have attracted much research attention due to the high discriminative property of multi-views for 3D object representation.…

Computer Vision and Pattern Recognition · Computer Science 2012-08-20 Qiong Liu

We present in this paper a new approach for the automatic annotation of medical images, using the approach of "bag-of-words" to represent the visual content of the medical image combined with text descriptors based approach tf.idf and…

Information Retrieval · Computer Science 2013-06-05 Riadh Bouslimi , Abir Messaoudi , Jalel Akaichi

To interpret deep models' predictions, attention-based visual cues are widely used in addressing \textit{why} deep models make such predictions. Beyond that, the current research community becomes more interested in reasoning \textit{how}…

Computer Vision and Pattern Recognition · Computer Science 2022-05-27 Wenxiao Xiao , Zhengming Ding , Hongfu Liu

Ship detection in remote sensing imagery is a critical task with wide-ranging applications, such as maritime activity monitoring, shipping logistics, and environmental studies. However, existing methods often struggle to capture…

Computer Vision and Pattern Recognition · Computer Science 2025-08-25 Jiahao Li , Jiancheng Pan , Yuze Sun , Xiaomeng Huang

Automated classification of human anatomy is an important prerequisite for many computer-aided diagnosis systems. The spatial complexity and variability of anatomy throughout the human body makes classification difficult. "Deep learning"…

Computer Vision and Pattern Recognition · Computer Science 2015-09-17 Holger R. Roth , Christopher T. Lee , Hoo-Chang Shin , Ari Seff , Lauren Kim , Jianhua Yao , Le Lu , Ronald M. Summers

With the rapid advancement of technology, the recognition of underwater acoustic signals in complex environments has become increasingly crucial. Currently, mainstream underwater acoustic signal recognition relies primarily on…

Sound · Computer Science 2024-01-08 Minghao Chen

Forward-looking sonar can capture high resolution images of underwater scenes, but their interpretation is complex. Generic object detection in such images has not been solved, specially in cases of small and unknown objects. In comparison,…

Computer Vision and Pattern Recognition · Computer Science 2017-09-11 Matias Valdenegro-Toro

Multimodal pre-trained models, such as CLIP, are popular for zero-shot classification due to their open-vocabulary flexibility and high performance. However, vision-language models, which compute similarity scores between images and class…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Mia Chiquier , Utkarsh Mall , Carl Vondrick