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DTSTAMP:20260114T163633Z
LOCATION:Darling Harbour Theatre\, Level 2 (Convention Centre)
DTSTART;TZID=Australia/Melbourne:20231212T093000
DTEND;TZID=Australia/Melbourne:20231212T124500
UID:siggraphasia_SIGGRAPH Asia 2023_sess209_papers_105@linklings.com
SUMMARY:Computational Design of LEGO Sketch Art
DESCRIPTION:Mingjun Zhou (The Chinese University of Hong Kong); Jiahao Ge 
 (The Chinese University of Hong Kong, Qianzhi Technology Inc.); Hao Xu (Qi
 anzhi Technology Inc.); and Chi-Wing Fu (The Chinese University of Hong Ko
 ng)\n\nThis paper presents computational methods to aid the creation of LE
 GO Sketch models from simple input images. Beyond conventional LEGO mosaic
 s, we aim to improve the expressiveness of LEGO models by utilizing LEGO t
 iles with sloping and rounding edges, together with rectangular bricks, to
  reproduce smooth curves and sharp features in the input. This is a challe
 nging task, as we have limited brick shapes to use and limited space to pl
 ace bricks. Also, the search space is immense and combinatorial in nature.
  We approach the task by decoupling the LEGO construction into two steps: 
 first approximate the shape with a LEGO-buildable contour then filling the
  contour polygon with LEGO bricks. Further, we formulate this contour appr
 oximation into a graph optimization with our objective and constraints and
  effectively solve for the contour polygon that best approximates the inpu
 t shape. Further, we extend our optimization model to handle multi-color a
 nd multi-layer regions, and formulate a grid alignment process and various
  perceptual constraints to refine the results. We employ our method to cre
 ate a large variety of LEGO models and compare it with humans and baseline
  methods to manifest its compelling quality and speed.\n\nRegistration Cat
 egory: Full Access, Enhanced Access, Trade Exhibitor, Experience Hall Exhi
 bitor\n\n
URL:https://asia.siggraph.org/2023/full-program?id=papers_105&sess=sess209
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