Valter Costa

Valter Costa
INSTITUTO DE ENGENHARIA MECÂNICA E GESTÃO INDUSTRIAL | INEGI · UTAF

PhD in Informatics Engineering / Master in Electrical and Computers Engineering

About

26
Publications
8,781
Reads
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66
Citations
Introduction
Valter Costa currently works at the UTAF department at INEGI - Institute of Science and Innovation in Mechanical and Industrial Engineering. Research interests include computer vision, image processing and mobile robotics.
Additional affiliations
November 2015 - March 2020
INSTITUTO DE ENGENHARIA MECÂNICA E GESTÃO INDUSTRIAL
Position
  • Researcher
Description
  • Computer Vision Researcher; Electronic Product Developer
September 2012 - February 2014
Faculty of Engineering, University of Porto (FEUP)
Position
  • Research Assistant
Description
  • Teaching assistant of two programming courses: Programming 1 and Programming 2 at FEUP.
Education
September 2015 - April 2019
Faculty of Engineering, University of Porto (FEUP)
Field of study
  • Image Processing, Computer Vision
September 2009 - July 2015
Faculty of Engineering, University of Porto (FEUP)
Field of study
  • Robotics

Publications

Publications (26)
Article
Full-text available
Unique Objects (UNOs) are relevant for real-world applications such as anti-counterfeiting systems. In this work, cork is demonstrated as a UNO, part of the Physical Unclonability and Disorder (PUD) system. An adequate measurement kit (illumination device) and recognition method are also devised and evaluated. Natural hills and valleys of the cork...
Chapter
Using 2D images in authentication systems raises the question of spoof attacks: is it possible to deceive an authentication system using fake models possessing identical visual properties of the genuine one? In this work, an anti-spoofing method approach for a wine anti-counterfeiting system is presented. The proposed method relies in two different...
Chapter
Teaching mobile robotics adequately is a complex task. Within the strategies found in the literature, the one used in this work includes the use of a simulator. This simulator represents the Autonomous Driving Competition of the Portuguese Robotics Open. Currently, the simulator supports two different robots and all challenges of the autonomous dri...
Article
Full-text available
Object recognition represents the ability of a system to identify objects, humans or animals in images. Within this domain, this work presents a comparative analysis among different classification methods aiming at Tactode tile recognition. The covered methods include: (i) machine learning with HOG and SVM; (ii) deep learning with CNNs such as VGG1...
Article
Full-text available
Cork stoppers were shown to have unique characteristics that allow their use for authentication purposes in an anti-counterfeiting effort. This authentication process relies on the comparison between a user’s cork image and all registered cork images in the database of genuine items. With the growth of the database, this one-to-many comparison meth...
Conference Paper
Visual inspection based systems are important tools to ensure the quality of manufactured parts in industry. This work presents an automatic visual inspection approach for defect detection in turbo vanes in the investment casting industry. The proposed method uses RANSAC for robust line and circle detection to extract relevant information to discri...
Thesis
Full-text available
Tangible programming, when applied to robotics, makes programming more understandable and straightforward. This type of programming helps children developing their abilities of program- ming and computational thinking interactively and at earlier stages of their lives. From this idea came Tactode: a tangible programming system composed by puzzle-li...
Conference Paper
Full-text available
The industry is currently going through a new industrial revolution know as Industry 4.0, that consists in an exponential increase in automation and information exchange among different production phases with the goal of building "smart factories", where it is possible to have full control and feedback on all production stages. Hence, this work con...
Thesis
Full-text available
Artificial vision systems are widespread and non-invasive, paving the way to uniqueness detection and its recognition. A study on image-based Individual Object Recognition --- IOR --- systems for authentication and anti-counterfeiting purposes was performed. This study revealed some open issues in the literature of such systems leading to the foll...
Chapter
Interest in robotics field as a teaching tool to promote the STEM areas has grown in the past years. The search for solutions to promote robotics is a major challenge and the use of real robots always increases costs. An alternative is the use of a simulator. The construction of a simulator related with the Portuguese Autonomous Driving Competition...
Conference Paper
Content Based Image Retrieval (CBIR) is an important field of research targeting different applications. The one presented in this work results from an identified need for a wine anti-counterfeiting scheme based on photos of cork stoppers already proposed in previous work. A photo of each cork stopper is used to register a wine bottle during the bo...
Patent
Full-text available
Method for identifying a cork stopper comprising: capturing an image of a surface of the cork stopper which is being illuminated tangentially to said surface; comparing the captured image to a database of previously stored images of cork stoppers; indicating whether the captured image matches one of the previously stored images of cork stoppers. It...
Article
Full-text available
Wine counterfeiting is a major problem worldwide. Within this context, an approach to the problem of discerning original wine bottles from forged ones is the use of natural features present in the product, object and/or material (using it “as is”). The proposed application uses the cork stopper as a unique fingerprint, combined with state of the ar...
Presentation
Full-text available
SquirRob is a 25 euros Android and Arduino based mobile robot for robotics education. The mechanical and electronic designs are provided and it is expected for the students to improve them. The android application uses the rear camera and implements some image processing modules allowing actions such as coloured line following, colour proximity det...
Conference Paper
The use of Robotics as a teaching tool to foster knowledge in Science, Technology, Engineering and Mathematics – STEM for high school students is growing. Within this context, the need for solutions that decreases the overall cost of hardware is mandatory. In this work, a 25 euros Android-based mobile robot that allows connecting a smartphone to di...
Article
Full-text available
The purpose of this work is to explore the design principles for a Real-Time Robotic Multi Camera Vision System, in a case study involving a real world competition of autonomous driving. Design practices from vision and real-time research areas are applied into a Real-Time Robotic Vision application, thus exemplifying good algorithm design practice...
Conference Paper
Interest in autonomous vehicles has steadily increased in recent years. A number of tasks, like lane tracking, semaphore detection and decoding, are key features for a self-driving robot. This paper presents a path detection and tracking algorithm using the Inverse Perspective Mapping and Hough Transform methods compounded with real-time vision tec...
Presentation
Full-text available
Autonomous Vehicles are a topic of important research, also being visually appealing to the public and attractive to educators and researchers. The autonomous driving competition in the Portuguese Robotics Open tries to take advantage of this context but concerns arise from lack of participators. Participants mention the complexity of issues relate...
Conference Paper
Autonomous Vehicles are a topic of important research. The topic is also visually appealing to public and attractive to educators and researchers. The autonomous driving competition of the Portuguese Robotics Open (PRO) tries to take advantage of this context but concerns arise from lack of participators. In 2017 competition had only 4 teams and th...
Presentation
Full-text available
Interest in autonomous vehicles has steadily increased in recent years. A number of tasks, like lane tracking, semaphore detection and decoding, are key features for a self-driving robot. This paper presents a path detection and tracking algorithm using the Inverse Perspective Mapping and Hough Transform methods compounded with real-time vision tec...
Article
Full-text available
Interest in robotics field as a teaching tool to promote the STEM areas has grown in the past years. The search for solutions to promote robotics is a major challenge and the use of real robots always increases costs. An alternative is the use of a simulator. The construction of a simulator related with the Portuguese Autonomous Driving Competition...
Chapter
Full-text available
In this article, a course that explores the potential of learning ROS using a collaborative game world is presented. The competitive mindset and its origins are explored, and an analysis of a collaborative game is presented in detail, showing how some key design features lead participants to overcome the challenges proposed through cooperation and...
Conference Paper
Full-text available
Interest in robotics field as a teaching tool to promote the STEM areas – Science, Technology, Engineering and Mathematics has grown in the past years. The search for costless solutions to promote robotics is a major challenge and the use of real robots always increases associated costs. An alternative to this is the use of a simulator. The constru...
Presentation
Full-text available
Gazebo simulator for the Autonomous Driving Competition of the Portuguese Robotics Open GitHub repository: https://github.com/ee09115/conde_simulator#autonomous-driving-simulator-for-the-portuguese-robotics-open
Conference Paper
Full-text available
This article describes an experience in university and high school cooperation. It is expected to foster knowledge and deep learning in secondary schools by turning extra-curricular activities into articulated subject. The robotics area is very useful and generates interest and enthusiasm, even more so when associated with competition. The experien...

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Projects

Projects (2)
Project
Develop an autonomous driving simulator regarding the Portuguese Robotics Open. This simulator is used in university robotics classes. https://github.com/ee09115/conde_simulator