Talk Title: True immersive experience is finally coming to us: the standards ecosystem under construction to enable real world products

Talk Abstract: Video streaming is already the number one activity in smartphone use while video is the most used form of communication. Besides, the much-awaited new immersive experiences had been promising a significant increase in broadband usage for video streaming for years and now we already have the first dense light field (holographic) display available as a commercial product! In 2019, immersive media was considered one of the main drivers of 5G services (higher bandwidth, low latency, and speed/throughput to deliver next generation content) and its market was expected to expand at a rate of 19.6% achieving US$124.57 billion by 2025 (according to Grand View Research Inc.). The COVID-19 pandemic reinforced this trend and now we have an even better adjusted forecast: a market of US$184.27 billion by 2027. In this multi-billionaire market, the wide adoption of international multimedia standards is fundamental to ensure interoperability among all the heterogeneous devices, systems and video-on-demand platforms. The creation of new standards for the upcoming immersive media formats is a constant need and the competition among the standards organizations increases year after year. In 2018, Brazil finally became not only a user but also a producer of these standards. The official Brazilian delegation (first and only one in Latin America for the "ISO/IEC JTC 1/SC29") was created in 2018 and since then Brazilian experts from industry and academia have been actively contributing with innovative technologies for these future ISO/ITU-T multimedia standards. The Brazilian national body activities will be presented in this talk, as well as the standards creation process and current standards developing organizations (SDOs) status.

Short Bio: Vanessa Testoni is the Multimedia team leader at SRBR (Samsung Research Brazil), where her research interests are a mix of image/video coding, processing and streaming, video standards, machine learning, computer vision and information theory. She received her BS in CS from PUCPR (Brazil), her EE degree from UFPR (Brazil) and her MSc and PhD degrees in EE from UNICAMP (Brazil). She started her career at Siemens Telecommunications and later joined UCSD (USA) as a postdoctoral employee. She was awarded the Microsoft Research PhD Fellowship Award and the MIT TR35 (Young Innovators under 35) in the first Brazilian edition of the award. She is an IEEE senior member, an elected affiliate member of the Brazilian Academy of Sciences (ABC), a previous chair of the IEEE SPS (Signal Processing Society) São Paulo chapter and was nominated the first national head of the ISO/IEC JTC 001/SC 29 (JPEG/MPEG) Brazilian delegation.

Talk Title: From trimmed NURBS to watertight boundary representations of CAD models

Talk Abstract: A fundamental problem in Geometric Modeling is the one of converting the representation of a solid from one (representation) form to another. In this talk, I will discuss a particular instance of this problem, namely, the conversion of boundary representations of CAD models from the trimmed Non-Uniform Rational B-Splines (NURBS) form to watertight parametric forms. For historical and for practical reasons, the geometry of CAD models have been represented by trimmed NURBS. While this representation form is often more convenient to control a signature piece of the boundary in isolation, it is in general very difficult or impossible to represent the entire boundary as a watertight surface. In other words, the trimmed NURBS surface patches may not join each other continuously, giving rise to a boundary representation with very small gaps (i.e., fillets) along the boundary curves of the trimmed patches. With the advent and recent progress of Iso-Geometric Analysis (IGA), the need for watertight boundary representations of CAD models prompted several researchers to pay close attention to the conversion problem again. The aim of my talk is two-fold. First, I will focus on the shortcomings of the most recent solutions to the conversion problem from an industry's perspective. Second, I will shed some light on what constitutes a good solution to the problem. The talk is related to an on-going research collaboration with Jörg Peters (UF, United States) and Paulo Pagliosa (UFMS, Brazil).

Short Bio: Marcelo Siqueira received the BSc (computer science), in 1992, from Universidade Federal do Rio Grande do Norte (UFRN). He received the master degree, in 1994, from Universidade de São Paulo (USP), and the PhD degree, in 2006, from the University of Pennsylvania (UPenn). From 1996 to 2008, he was a professor at the College of Computing of Universidade Federal de Mato Grosso do Sul (UFMS). From 2009 to 2017, he was a professor at the Department of Mathematics of UFRN. In 2017, he joined Velo3D, a startup located at Campbell, CA, USA, that developed a disruptive technology for 3d printing of metallic parts. In 2018, he joined Align Technology, the world leader of clear aligners for orthodontic therapy, where is currently a full-time researcher and software developer. His research interests are mesh generation, modeling of curves and surfaces, and digital topology.