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Ray tracing is an efficient channel modeling method. However, the traditional ray tracing method has high computation complexity. To solve this problem, an improved bounding volume hierarchies (BVH) algorithm is proposed in this paper.…

Signal Processing · Electrical Eng. & Systems 2022-08-23 Chen Wang , Yinghua Wang , Yuxiao Li , Jialing Huang , Jie Huang , Cheng-Xiang Wang

Artificial objects usually have very stable shape features, which are stable, persistent properties in geometry. They can provide evidence for object recognition. Shape features are more stable and more distinguishing than appearance…

Computer Vision and Pattern Recognition · Computer Science 2023-06-27 Hui Wei , Fu-yu Tang

We present a context aware object detection method based on a retrieve-and-transform scene layout model. Given an input image, our approach first retrieves a coarse scene layout from a codebook of typical layout templates. In order to…

Computer Vision and Pattern Recognition · Computer Science 2019-12-10 Tao Wang , Xuming He , Yuanzheng Cai , Guobao Xiao

This paper introduces a high efficient local spatiotemporal descriptor, called gradient boundary histograms (GBH). The proposed GBH descriptor is built on simple spatio-temporal gradients, which are fast to compute. We demonstrate that it…

Computer Vision and Pattern Recognition · Computer Science 2014-12-04 Feng Shi , Robert Laganiere , Emil Petriu

Recently, several look-up table (LUT) methods were developed to greatly expedite the inference of CNNs in a classical strategy of trading space for speed. However, these LUT methods suffer from a common drawback of limited receptive field…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Xi Zhang , Xiaolin Wu

This paper introduces a second-order hyperplane search, a novel optimization step that generalizes a second-order line search from a line to a $k$-dimensional hyperplane. This, combined with the forward-mode stochastic gradient method,…

Machine Learning · Computer Science 2024-08-21 Adam D. Cobb , Atılım Güneş Baydin , Barak A. Pearlmutter , Susmit Jha

Manual visual inspection performed by certified inspectors is still the main form of road pothole detection. This process is, however, not only tedious, time-consuming and costly, but also dangerous for the inspectors. Furthermore, the road…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Rui Fan , Hengli Wang , Mohammud J. Bocus , Ming Liu

Object detection is a critical part of visual scene understanding. The representation of the object in the detection task has important implications on the efficiency and feasibility of annotation, robustness to occlusion, pose, lighting,…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Li Ding , Lex Fridman

This papers presents a novel quantised transform (the Sinclair-Town or ST transform for short) that subsumes the rolls of both edge-detector, MSER style region detector and corner detector. The transform is similar to the $unsharp$…

Computer Vision and Pattern Recognition · Computer Science 2021-02-04 Dr David Sinclair , Dr Christopher Town

Radio propagation modeling is essential in telecommunication research, as radio channels result from complex interactions with environmental objects. Recently, Machine Learning has been attracting attention as a potential alternative to…

We present a novel automatic adaptive aperture photometry algorithm for measuring the total magnitudes of merging galaxies with irregular shapes. First, we use a morphological pattern recognition routine for identifying the shape of an…

Instrumentation and Methods for Astrophysics · Physics 2017-02-08 Jen-Chao Huang , Chorng-Yuan Hwang

Light field imaging extends the traditional photography by capturing both spatial and angular distribution of light, which enables new capabilities, including post-capture refocusing, post-capture aperture control, and depth estimation from…

Computer Vision and Pattern Recognition · Computer Science 2018-03-14 M. Shahzeb Khan Gul , Bahadir K. Gunturk

A common way of speeding up powder diffraction measurements is the use of one or two dimensional detectors. This usually goes along with worse resolution and asymmetric peak profiles. In this work the influence of a straight linear detector…

Materials Science · Physics 2015-03-26 Dominik Kriegner , Zdenek Matej , Radomir Kuzel , Vaclav Holy

The Radon transform is a linear integral transform that mimics the data formation process in medical imaging modalities like X-ray Computerized Tomography and Positron Emission Tomography. The Hough transform is a pattern recognition…

Numerical Analysis · Mathematics 2016-05-31 Riccardo Aramini , Fabrice Delbary , Mauro C. Beltrametti , Michele Piana , Anna Maria Massone

We present novel retrospective change point detection approach based on optimal transport and geometric discrepancy. The method does not require any parametric assumptions about distributions separated by change points. It can be used both…

Methodology · Statistics 2017-07-28 Nikita Pronko

One of the most challenging tasks in microarray image analysis is spot segmentation. A solution to this problem is to provide an algorithm than can be used to find any spot within the microarray image. Circular Hough Transformation (CHT) is…

Computer Vision and Pattern Recognition · Computer Science 2016-03-24 R. M. Farouk , M. A. SayedElahl

A key challenge for LiDAR-based 3D object detection is to capture sufficient features from large scale 3D scenes especially for distant or/and occluded objects. Albeit recent efforts made by Transformers with the long sequence modeling…

Computer Vision and Pattern Recognition · Computer Science 2023-03-23 Chao Zhou , Yanan Zhang , Jiaxin Chen , Di Huang

Vision transformers have achieved remarkable progress in vision tasks such as image classification and detection. However, in instance-level image retrieval, transformers have not yet shown good performance compared to convolutional…

Computer Vision and Pattern Recognition · Computer Science 2022-10-24 Chull Hwan Song , Jooyoung Yoon , Shunghyun Choi , Yannis Avrithis

Transformers have become an important workhorse of machine learning, with numerous applications. This necessitates the development of reliable methods for increasing their transparency. Multiple interpretability methods, often based on…

Machine Learning · Computer Science 2022-06-24 Ameen Ali , Thomas Schnake , Oliver Eberle , Grégoire Montavon , Klaus-Robert Müller , Lior Wolf

We propose an object detector for top-view grid maps which is additionally trained to generate an enriched version of its input. Our goal in the joint model is to improve generalization by regularizing towards structural knowledge in form…

Computer Vision and Pattern Recognition · Computer Science 2020-03-10 Sascha Wirges , Ye Yang , Sven Richter , Haohao Hu , Christoph Stiller