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Significant progress has been made for assessing the influence of porosity on the performance metrics for cast components through various modeling techniques. However, a computationally efficient framework to account for porosity with…

Computational Engineering, Finance, and Science · Computer Science 2022-04-05 Shiguang Deng , Carl Soderhjelm , Diran Apelian , Krishnan Suresh

Given a unirational parameterization of a surface, we present a general algorithm to determine a birational parameterization without using parameterization algorithms. Additionally, if the surface is assumed to have a birational…

Algebraic Geometry · Mathematics 2022-11-15 Jorge Caravantes , Sonia Pérez-Díaz , J. Rafael Sendra

This paper introduces a robust approach for automated defect detection in tire X-ray images by harnessing traditional feature extraction methods such as Local Binary Pattern (LBP) and Gray Level Co-Occurrence Matrix (GLCM) features, as well…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Andrei Cozma , Landon Harris , Hairong Qi , Ping Ji , Wenpeng Guo , Song Yuan

We present surface normal estimation using a single near infrared (NIR) image. We are focusing on fine-scale surface geometry captured with an uncalibrated light source. To tackle this ill-posed problem, we adopt a generative adversarial…

Computer Vision and Pattern Recognition · Computer Science 2016-03-25 Youngjin Yoon , Gyeongmin Choe , Namil Kim , Joon-Young Lee , In So Kweon

Texture is an essential information in image representation, capturing patterns and structures. As a result, texture plays a crucial role in the manufacturing industry and is extensively studied in the fields of computer vision and pattern…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Jongwook Si , Sungyoung Kim

Predictive marker patterns in imaging data are a means to quantify disease and progression, but their identification is challenging, if the underlying biology is poorly understood. Here, we present a method to identify predictive texture…

Computer Vision and Pattern Recognition · Computer Science 2020-02-11 Matthias Perkonigg , Daniel Sobotka , Ahmed Ba-Ssalamah , Georg Langs

Textural and structural features can be regraded as "two-view" feature sets. Inspired by the recent progress in multi-view learning, we propose a novel two-view classification method that models each feature set and optimizes the process of…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Samah Khawaled , Michael Zibulevsky , Yehoshua Y. Zeevi

An algorithm for determining crystal structures from diffraction data is described which does not rely on the usual Fourier-space formulations of atomicity. The new algorithm implements atomicity constraints in real-space, as well as…

Condensed Matter · Physics 2007-05-23 Veit Elser

Liquid crystal textures encode rich structural information, yet mapping these images to mesophase identity remains challenging because visually similar patterns can arise from distinct structures. Here we present a simple, interpretable…

Pothole detection is one of the most important tasks for road maintenance. Computer vision approaches are generally based on either 2D road image analysis or 3D road surface modeling. However, these two categories are always used…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Rui Fan , Umar Ozgunalp , Brett Hosking , Ming Liu , Ioannis Pitas

Several devices for substrate texture detection based on diffractive optics, for paper, textiles and non-wovens have been proposed in the past for direct inspection during the production processes. In spite of the presence of devices…

Popular Physics · Physics 2008-01-21 Amelia Sparavigna , Rory A. Wolf

Many algorithms have been proposed to help clinicians evaluate cone density and spacing, as these may be related to the onset of retinal diseases. However, there has been no rigorous comparison of the performance of these algorithms. In…

Medical Physics · Physics 2015-03-13 Letizia Mariotti , Nicholas Devaney

This paper proposes a fast and accurate surface normal estimation method which can be directly used on depth maps (organized point clouds). The surface normal estimation process is formulated as a closed-form expression. In order to reduce…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Saed Moradi , Alireza Memarmoghadam , Denis Laurendeau

Reliably manufacturing defect free products is still an open challenge for Laser Powder Bed Fusion processes. Particularly, pores that occur frequently have a negative impact on mechanical properties like fatigue performance. Therefore, an…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Hans Aoyang Zhou , Jan Theunissen , Marco Kemmerling , Anas Abdelrazeq , Johannes Henrich Schleifenbaum , Robert H. Schmitt

This paper discusses new methods for processing images in the photon-limited regime where the number of photons per pixel is binary. We present a new Bayesian denoising method for binary, single-photon images. Each pixel measurement is…

Methodology · Statistics 2016-09-19 Yoann Altmann , Reuben Aspden , Miles Padgett , Steve McLaughlin

Ensuring traffic safety is crucial, which necessitates the detection and prevention of road surface defects. As a result, there has been a growing interest in the literature on the subject, leading to the development of various road surface…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Jongmin Yu , Jiaqi Jiang , Sebastiano Fichera , Paolo Paoletti , Lisa Layzell , Devansh Mehta , Shan Luo

The local histogram transform of an image is a data cube that consists of the histograms of the pixel values that lie within a fixed neighborhood of any given pixel location. Such transforms are useful in image processing applications such…

Functional Analysis · Mathematics 2011-05-23 Melody L. Massar , Ramamurthy Bhagavatula , Matthew Fickus , Jelena Kovacevic

The problem of 3D object recognition is of immense practical importance, with the last decade witnessing a number of breakthroughs in the state of the art. Most of the previous work has focused on the matching of textured objects using…

Computer Vision and Pattern Recognition · Computer Science 2013-06-17 Ognjen Arandjelovic

In this paper, we present an efficient and distinctive local descriptor, namely block intensity and gradient difference (BIGD). In an image patch, we randomly sample multi-scale block pairs and utilize the intensity and gradient differences…

Image and Video Processing · Electrical Eng. & Systems 2020-02-05 Yuting Hu , Zhen Wang , Ghassan AlRegib

Print quality is an important criterion for a printer's performance. The detection, classification, and assessment of printing defects can reflect the printer's working status and help to locate mechanical problems inside. To handle all…

Computer Vision and Pattern Recognition · Computer Science 2020-02-27 Xiaoyu Xiang , Renee Jessome , Eric Maggard , Yousun Bang , Minki Cho , Jan Allebach