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SUMMARY:Mesh-Based Freeform Lens Optimization for Light Control
DTSTART:20240905T110000
DTEND:20240905T120000
DTSTAMP:20260412T113352Z
UID:4a6902d1a748748b4f81945c632018964be1bc9530e8a08cc9b1e264
CATEGORIES:Conferences - Seminars
DESCRIPTION:Bailin Deng\nAbstract: \nDesigning a freeform surface that re
 flects or refracts light to achieve a target distribution is a challenging
  inverse problem. In this talk\, I will present two recent works on optimi
 zing freeform lenses represented as triangle meshes to create desired caus
 tic patterns. The first work introduces a differentiable rendering model t
 hat calculates caustics from a mesh surface without the need for sampling.
  This model enables direct optimization based on the difference between th
 e target and resulting caustic images\, leading to single-sided freeform l
 ens designs with caustics closing matching the target. In the second work\
 , we propose a technique that simultaneously optimizes both sides of a fre
 eform lens\, using a bijective correspondence between the two sides to con
 trol light refraction paths. Our preliminary results are promising\, sugge
 sting new possibilities for freeform optics design. \n\nBio:\nBailin Deng
  is a Senior Lecturer in the School of Computer Science and Informatics a
 t Cardiff University\, where he leads the Geometric Computing and Graphics
  Research Group. He holds a BEng in Computer Software and an MSc in Comput
 er Science from Tsinghua University\, as well as a PhD in Technical Mathem
 atics from the Vienna University of Technology. Before joining Cardiff Uni
 versity in 2017\, he worked as a postdoctoral researcher at the Computer G
 raphics and Geometry Laboratory at EPFL\, and as a Lecturer in the School 
 of Computer Science at the University of Hull. His research focuses on 3D 
 geometry processing and the development of numerical algorithms\, with app
 lications in computational design\, geometric modeling\, and computer anim
 ation.
LOCATION:BC 229 https://plan.epfl.ch/?room==BC%20229
STATUS:CONFIRMED
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