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Obstacle detection is one of the basic tasks of a robot movement in an unknown environment. The use of a LiDAR (Light Detection And Ranging) sensor allows one to obtain a point cloud in the vicinity of the sensor. After processing this…

机器人学 · 计算机科学 2024-04-12 Lukas Kratochvila

The investigation of liquid flow at the nanoscale is a key area of applied research with high relevance to Physics, Chemistry and Biology. We introduce a method and a device that allows to spatially resolve liquid flow by integrating an…

介观与纳米尺度物理 · 物理学 2016-08-24 R. F. Neumann , M. Engel , M. Steiner

In image processing, a segmentation is a process of partitioning an image into multiple sets of pixels, that are defined as super-pixels. Each super-pixel is characterized by a label or parameter. Here, we are proposing a method for…

计算机视觉与模式识别 · 计算机科学 2016-12-06 Amelia Carolina Sparavigna

We present a method for automated segmentation of the vasculature in retinal images. The method produces segmentations by classifying each image pixel as vessel or non-vessel, based on the pixel's feature vector. Feature vectors are…

计算机视觉与模式识别 · 计算机科学 2007-05-23 João V. B. Soares , Jorge J. G. Leandro , Roberto M. Cesar , Herbert F. Jelinek , Michael J. Cree

An algorithm and a program for detecting the boundaries of water bodies for the autopilot module of asurface robot are proposed. A method for detecting water objects on satellite maps by the method of finding a color in the HSV color space,…

系统与控制 · 电气工程与系统科学 2022-12-06 Aleksandr N. Grekov , Yurii E. Shishkin , Sergei S. Peliushenko , Aleksandr S. Mavrin

In material science, image segmentation is of great significance for quantitative analysis of microstructures. Here, we propose a novel Weighted Propagation Convolution Neural Network based on U-Net (WPU-Net) to detect boundary in…

计算机视觉与模式识别 · 计算机科学 2025-07-11 Wei Liu , Jiahao Chen , Chuni Liu , Xiaojuan Ban , Boyuan Ma , Hao Wang , Weihua Xue , Yu Guo

We introduce a novel method to extract the vessels in eye fun-dus images which is adaptive to lighting variations. In the Logarithmic Image Processing framework, a 3-segment probe detects the vessels by probing the topographic surface of an…

计算机视觉与模式识别 · 计算机科学 2020-06-01 Guillaume Noyel , Christine Vartin , Peter Boyle , Laurent Kodjikian

In spite of considerable progress, computing curvature in Volume of Fluid (VOF) methods continues to be a challenge. The goal is to develop a function or a subroutine that returns the curvature in computational cells containing an interface…

计算物理 · 物理学 2018-11-14 Yinghe Qi , Jiacai Lu , Ruben Scardovelli , Stephane Zaleski , Gretar Tryggvason

Accurate segmentation of surgical instrument tip is an important task for enabling downstream applications in robotic surgery, such as surgical skill assessment, tool-tissue interaction and deformation modeling, as well as surgical…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Jiaqi Liu , Yonghao Long , Kai Chen , Cheuk Hei Leung , Zerui Wang , Qi Dou

In this work, we propose a new segmentation algorithm for images containing convex objects present in multiple shapes with a high degree of overlap. The proposed algorithm is carried out in two steps, first we identify the visible contours,…

计算机视觉与模式识别 · 计算机科学 2017-11-08 Kumar Abhinav , Jaideep Singh Chauhan , Debasis Sarkar

Visual affordance segmentation identifies the surfaces of an object an agent can interact with. Common challenges for the identification of affordances are the variety of the geometry and physical properties of these surfaces as well as…

计算机视觉与模式识别 · 计算机科学 2025-05-12 Tommaso Apicella , Alessio Xompero , Edoardo Ragusa , Riccardo Berta , Andrea Cavallaro , Paolo Gastaldo

We propose and analyze a constrained level-set method for semi-automatic image segmentation. Our level-set model with constraints on the level-set function enables us to specify which parts of the image lie inside respectively outside the…

数值分析 · 数学 2014-12-11 Vladimír Klement , Tomáš Oberhuber , Daniel Ševčovič

We propose and analyze a constrained level-set method for semi-automatic image segmentation. Our level-set model with constraints on the level-set function enables us to specify which parts of the image lie inside respectively outside the…

数值分析 · 数学 2015-01-07 Vladimír Klement , Tomáš Oberhuber , Daniel Ševčovič

Many biological examples of fluid-structure interaction, including the transit of red blood cells through the narrow slits in the spleen and the intracellular trafficking of vesicles into dendritic spines, involve the near-contact of…

数值分析 · 数学 2017-12-20 Thomas G. Fai , Chris H. Rycroft

In autonomous Vehicles technology Image segmentation was a major problem in visual perception. This image segmentation process is mainly used in medical applications. Here we adopted an image segmentation process to visual perception tasks…

计算机视觉与模式识别 · 计算机科学 2020-11-17 Tirumalapudi Raviteja , Rajay Vedaraj . I. S

Two methods for solid body representation in flow simulations available in the Pencil Code are the immersed boundary method and overset grids. These methods are quite different in terms of computational cost, flexibility and numerical…

计算物理 · 物理学 2018-11-20 Jørgen R. Aarnes , Tai Jin , Chaoli Mao , Nils E. L. Haugen , Kun Luo , Helge I. Andersson

Segmentation of objects in a video is challenging due to the nuances such as motion blurring, parallax, occlusions, changes in illumination, etc. Instead of addressing these nuances separately, we focus on building a generalizable solution…

计算机视觉与模式识别 · 计算机科学 2023-07-11 Silky Singh , Shripad Deshmukh , Mausoom Sarkar , Rishabh Jain , Mayur Hemani , Balaji Krishnamurthy

Computer vision-based damage detection using remote cameras and unmanned aerial vehicles (UAVs) enables efficient and low-cost bridge health monitoring that reduces labor costs and the needs for sensor installation and maintenance. By…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Jingxiao Liu , Yujie Wei , Bingqing Chen , Hae Young Noh

This work proposes a pixel-classification approach for vessel segmentation in x-ray angiograms. The proposal uses textural features such as anisotropic diffusion, features based on the Hessian matrix, mathematical morphology and statistics.…

计算机视觉与模式识别 · 计算机科学 2026-05-20 E O Rodrigues , L O Rodrigues , J J Lima , D Casanova , F Favarim , E R Dosciatti , V Pegorini , L S N Oliveira , F F C Morais

Establishing dense correspondence across 3D shapes is crucial for fundamental downstream tasks, including texture transfer, shape interpolation, and robotic manipulation. However, learning these mappings without manual supervision remains a…

计算机视觉与模式识别 · 计算机科学 2026-03-10 Qinfeng Xiao , Guofeng Mei , Qilong Liu , Chenyuan Yi , Fabio Poiesi , Jian Zhang , Bo Yang , Yick Kit-lun