A5009660837- 3D Shape Modeling and Analysis
- Electrical and Bioimpedance Tomography
- Computer Graphics and Visualization Techniques
- 3D Surveying and Cultural Heritage
- Advanced Numerical Analysis Techniques
- Advanced Vision and Imaging
- Non-Destructive Testing Techniques
- Flow Measurement and Analysis
- Geophysical and Geoelectrical Methods
- Image and Object Detection Techniques
- Advanced Multi-Objective Optimization Algorithms
- Manufacturing Process and Optimization
- Optical measurement and interference techniques
- Air Traffic Management and Optimization
- Computational Geometry and Mesh Generation
- Medical Imaging and Analysis
- Probabilistic and Robust Engineering Design
- Human Pose and Action Recognition
- Wireless Sensor Networks for Data Analysis
- Remote Sensing and LiDAR Applications
- Structural Analysis and Optimization
- Topology Optimization in Engineering
- Advanced Aircraft Design and Technologies
- Smart Agriculture and AI
- Image Enhancement Techniques
Kyushu Institute of Technology
2025
Universidade de São Paulo
2012-2023
Fundação Escola de Sociologia e Política de São Paulo
2021
National Institute of Technology, Nara College
2010
The determination of approximation curves and surfaces from a point clouds is an important task in CAD, particular on reverse engineering. curve sequence points known subject, however the surface still open research field. This work presents method to determine that approximates boundaries cloud. Initially, set determining boundary cloud presented. These sequences are approximated by piecewise cubic Bézier segments. A simulated annealing algorithm used minimizing discrepancy between curve....
The determination of an approximation curve from a given sequence points is important task in CAD. This work proposes algorithm to determine piecewise Bezier that approximates points. It used multiobjective simulated annealing aiming at minimizing the discrepancy between and curve, length absolute difference determined by sum distance each point enhanced method which discretized.
Aquaculture is an activity that growing 10% a year in Brazil and still occupies less than 1% of the area reserved for fish farming, which shows great productive potential Brazil. With this growth, many challenges are emerging advances being made. One technology they starting to use Brazilian farms stereo cameras can evaluate average weight Nile tilapia tank. This estimation based on its 3D length, but one most correlated information with width. Thus, objective work improve using by...
Pipelines are subject to wall-thickness loss due corrosion along time. Ultrasonic pulse-echo techniques widely used for thickness measurement achieving a high resolution. However, the precision of is highly dependent on temperature and ultrasonic system. This work presents an echo analysis method based appropriate temporal window threshold evaluate pipe using transducers. The results experimentally evaluated array transducers (5 MHz, 10 mm diameter) operating in mode with water coupling layer.
Electrical Impedance Tomography (EIT) is a noninvasive, indirect image reconstruction technique which consists in the inference of distribution electrical conductivity inside body or object from set potentials measured on its boundary. Several methods have been used for EIT images, such as Simulated Annealing, Kalman Filter, D-bar, and, more recently, Convolutional Neural Networks (CNN). An issue when using CNN that resulting convolution process smaller than original input image. Besides...
The objective of this work is to perform the 3D reconstruction combining cloud points obtained from different viewpoints using structured light. point simplified reduce computational time. main task registration algorithm that matches two clouds. A well known for ICP determines rotation and translation when applied one clouds, place both clouds in accordance. executes iteratively steps: correspondence determination algorithm. a module if not executed properly can make converge local minimum....
Due to the great interest of automotive industry quickly and systematically evaluate low wear quantities a new approach based on image processing is presented. By comparing captured rough surface point cloud using optical interferometry before after wear, proposed algorithm was able estimate amount volume mass loss. The has two main steps. In first step, 3D clouds obtained are mapped 2D images, conventional edge detection algorithms applied. Keypoints determined SIFT both images (before...
Generating natural motion of an articulated object with higher DOF (e.g., humanoid robot and hand) is a crucial issue in robotics computer graphics fields. Use the capture data one solutions, but it requires expensive device time-consuming measurement. In this paper, we propose method for generating hand to play piano from inputted music score. The proposed uses inverse kinematics while considering naturalness poses. We revisit background based on maximum likelihood estimation use prior...
This work presents a method to determine the curve that approximates worn perimeter in turbine blade. A CAD model is used as reference and it searched for points of measured point cloud shows threshold filter fabrication errors, resulting just indicates region. The alpha complex algorithm triangulate determined points. triangulation eliminates long edges making possible with concave regions. boundary this by search belongs one triangle. simulated annealing optimize cost function piecewise...
The determination of an approximation curve from a given sequence points is important task in CAD. However, the minimum number required parameters to represent open issue. This work proposes semi-automatic method determine piecewise that approximates sampled points, which manual step done and automatic parameters. Feature are manually chosen within simplified sequence. These feature cubic Bézier curves segments, simulated annealing algorithm used minimize discrepancy between by adjusting...
Simulation-based optimization is an area where techniques from and simulation analysis are integrated. This work uses a based technique to determine the best aircraft conceptual design according constraints imposed by Society of Automotive Engineers (SAE) Aero Design competition. The was performed Simulated Annealing (SA) algorithm. SA has two main parameters be configured: cooling schedule next candidate determination. researches three different strategies implement crystallization...
Electrical impedance tomography (EIT) is a promising imaging technology. It portable, user-independent, and low cost (compared to other technologies). There are two main approaches for EIT equipments: dynamic absolute images. Absolute images technologically more difficult limited by hardware. Phase information required create permittivity This an ongoing research with the objective of evaluating phase information. A new architecture up 64 electrodes proposed. Each electrode has its own...
Electrical Impedance Tomography (EIT) is a noninvasive, nonradioactive technique used to obtain an internal image of body or object. This work addresses several EIT-related problems using Artificial Neural Networks (ANNs). The EIT method consists performing measurements electrical potentials in set electrodes while different patterns current are applied. proposes the use modified version LeNet-5 determine conductivity distribution within domain, resulting interior boundary which positioned....
This paper represents how typical advanced engineering design can be structured using a set of parameters and objective functions corresponding to the nature problem. The in different types, including integer, real, cyclic, combinatorial, interval, etc. Similarly, function presented various types integer (discrete), float, interval. simulated annealing with crystallization heuristic deal all these combinations when presents sensibility for real parameters. Herein, is enhanced by combining...
The mesh approximation of solid models is an important and necessary step for several applications. Particularly when surfaces with T-junctions are presented in the model. In this situation, surface boundaries can have different number segment approximations. Such a be filled by irregular mesh. paving algorithm one best generators, however its implementation not easy. This work redesign specific to quadrilaterals segmentaion each side. Several results shown demonstrating that redesigned was...