Reconstructing Three-Dimensional Models of Interacting Humans

Understanding 3d human interactions is fundamental for fine-grained scene analysis and behavioural modeling. However, most of the existing models predict incorrect, lifeless 3d estimates, that miss the subtle human contact aspects--the essence of the event--and are of little use for detailed behavioral understanding. This paper addresses such issues with several contributions: (1) we introduce models for interaction signature estimation (ISP) encompassing contact detection, segmentation, and 3d contact signature prediction; (2) we show how such components can be leveraged to ensure contact consistency during 3d reconstruction; (3) we construct several large datasets for learning and evaluating 3d contact prediction and reconstruction methods; specifically, we introduce CHI3D, a lab-based accurate 3d motion capture dataset with 631 sequences containing $2,525$ contact events, $728,664$ ground truth 3d poses, as well as FlickrCI3D, a dataset of $11,216$ images, with $14,081$ processed pairs of people, and $81,233$ facet-level surface correspondences. Finally, (4) we propose methodology for recovering the ground-truth pose and shape of interacting people in a controlled setup and (5) annotate all 3d interaction motions in CHI3D with textual descriptions. Motion data in multiple formats (GHUM and SMPLX parameters, Human3.6m 3d joints) is made available for research purposes at \url{https://ci3d.imar.ro}, together with an evaluation server and a public benchmark

Grid Computing und Peer-to-Peer Systeme. Seminar SS 2004

Im Sommersemester 2004 wurde im Seminar "Grid Computing und Peer-to-Peer Systeme" eine Reihe aktueller Themen aus den Grid Computing, Peer-to-Peer Systeme und Ad-Hoc Netzwerkem Gebieten angeboten. Jeder Teilnehmer wählte hieraus ein Thema, um darüber in der Form eines medial gestützten Vortrages zu referieren. Um allen Teilnehmern die Gelegenheit zu geben, aus diesem Seminar nachhaltig etwas mitzunehmen, fertigte jeder Vortragende eine allen zugängliche schriftliche Ausarbeitung an. Die Ausarbeitungen finden sich in leicht redigierter Fassung durch die Editoren im vorliegenden technischen Bericht wieder

APPLICATION OF LEXICOGRAPHIC METHODS IN FINDING NEW SOLUTIONS FOR THE CONSTRUCTION OF SWITCH FAUCETS

Methods and techniques to stimulate creativity are indispensable in the process of obtaining more reliable and competitive products. For the elaboration and efficient use of logical-deductive methods and techniques in creativity, it is necessary to know a minimum of combinatorics, which include arrangements, combinations, permutations, graphs and finite networks. From the multitude of methods of orderly enumeration of all ensembles, without omissions or repetitions, the lexicographic method is recommended, according to which, the assemblies are ordered in ascending order according to the sum of the component elements index. The main purpose of this paper is to apply the lexicographic method to obtain a more efficient flow faucet body in terms of working fluid behavior. Thus, the pressure, flow, velocity variation and degree of fluid vorticity have better values for the faucet body obtained by applying the lexicographic method. Therefore, by applying the flow simulation method, it was possible to characterize the behavior of the working fluid

APPLICATION OF LEXICOGRAPHIC METHODS IN FINDING NEW SOLUTIONS FOR THE CONSTRUCTION OF SWITCH FAUCETS

Methods and techniques to stimulate creativity are indispensable in the process of obtaining more reliable and competitive products. For the elaboration and efficient use of logical-deductive methods and techniques in creativity, it is necessary to know a minimum of combinatorics, which include arrangements, combinations, permutations, graphs and finite networks. From the multitude of methods of orderly enumeration of all ensembles, without omissions or repetitions, the lexicographic method is recommended, according to which, the assemblies are ordered in ascending order according to the sum of the component elements index. The main purpose of this paper is to apply the lexicographic method to obtain a more efficient flow faucet body in terms of working fluid behavior. Thus, the pressure, flow, velocity variation and degree of fluid vorticity have better values for the faucet body obtained by applying the lexicographic method. Therefore, by applying the flow simulation method, it was possible to characterize the behavior of the working fluid

Design and Development of a UDP-Based Connection-Oriented Multi-Stream One-to-Many Communication Protocol, Journal of Telecommunications and Information Technology, 2012, nr 1

A communication protocol is a set of rules defined formally that describes the format of digital messages and the rules for exchanging those messages in or between computing systems. The Internet Protocol Suite used for communications throughout the Internet uses encapsulation to provide a way of abstracting protocols and services. This abstraction is grouped into layers of general functionality. For protocols on the transmission layer, many choices exist. But while popular protocols such as TCP, UDP and SCTP do provide connection oriented communication offering reliability, ordering and data integrity, solutions that offer such connections from one point to multiple endpoints are still limited. TCP only supports point-to-point communication and SCTP offers multi-homing functionality, but the transmission is still limited to two logical endpoints. In this paper we use the simple, stateless, transmission model of UDP in order to provide TCP-like services for one-to-many communication that is not limited to just multi-homing or other particular solutions. The protocol supports reliable communication from one endpoint to multiple endpoints in different transmission modes. In order to make it easier for developers to customize the protocol to their needs and possibly extend/modify it in order to create new variants from it, the protocol is developed in user space. Because of this design restriction performance wasn’t the main objective of our work, but rather the ease of customization and experimentation with new protocol variants. The protocol was implemented in the C++ programming language using classes with virtual members. New variants of components, such as packet retransmission, can easily be implemented without changing the whole code base

Control Systems Engineering made Easy: Motivating Students through Experimentation on UAVs

International audienceThis paper focuses on a new elective course on modeling and control of multi-agent systems, with experimentation on Unmanned Aerial Vehicles (UAVs). The module is taught for students with basic knowledge in Automatic Control and Optimization and it intends to increase their interest in applying advanced control techniques on UAVs in an enjoyable framework favorable to develop creativity, practical and team working skills, together with a solid and persistent theoretical background

Systeme für Hochleistungsrechnen. Seminar SS 2003

Systeme für Hochleistungsrechnen sind Parallelrechner, die eingesetzt werden, wenn die Rechenleistung herkömmlicher Einzelprozessorsysteme nicht ausreicht. Die früher verwendeten, eng gekoppelten Multiprozessorsysteme werden, dem Trend zur globalen Vernetzung folgend, zunehmend durch preiswertere, lose gekoppelte Rechnerverbünde aus Standardrechnerknoten und Massenspeichern ersetzt. Die lose Kopplung ergibt vielfältige neue Herausforderungen in der Koordinierung zwischen den Rechnerknoten wie auch innerhalb jedes Knotens, um die Ressourcen im Verbund effizient nutzen zu können. Dies betrifft die koordinierte Zuteilung von Prozessoren und Speicher auf Prozesse ebenso wie die selbstorganisierende Abstimmung der Kommunikation zwischen den Knoten unter Berücksichtigung der Verbundtopologie. Vielfältige aktuell diskutierte Lösungsansätze von der Hardwareschicht über das Betriebssystem bis zur Anwendungsschicht werden in einer Reihe von Beiträgen, die im Rahmen des Seminars "Systeme für Hochleistungsrechnen" im Sommersemester 2003 erarbeitet wurden, aufgezeigt und erörtert