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DTSTAMP:20240214T070240Z
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:Technical Papers\n\nMingjun Zhou (The Chinese University of Ho
 ng Kong); Jiahao Ge (The Chinese University of Hong Kong, Qianzhi Technolo
 gy Inc.); Hao Xu (Qianzhi Technology Inc.); and Chi-Wing Fu (The Chinese U
 niversity of Hong Kong)\n\nThis paper presents computational methods to ai
 d the creation of LEGO Sketch models from simple input images. Beyond conv
 entional LEGO mosaics, we aim to improve the expressiveness of LEGO models
  by utilizing LEGO tiles with sloping and rounding edges, together with re
 ctangular bricks, to reproduce smooth curves and sharp features in the inp
 ut. This is a challenging task, as we have limited brick shapes to use and
  limited space to place bricks. Also, the search space is immense and comb
 inatorial in nature. We approach the task by decoupling the LEGO construct
 ion into two steps: first approximate the shape with a LEGO-buildable cont
 our then filling the contour polygon with LEGO bricks. Further, we formula
 te this contour approximation into a graph optimization with our objective
  and constraints and effectively solve for the contour polygon that best a
 pproximates the input shape. Further, we extend our optimization model to 
 handle multi-color and multi-layer regions, and formulate a grid alignment
  process and various perceptual constraints to refine the results. We empl
 oy our method to create a large variety of LEGO models and compare it with
  humans and baseline methods to manifest its compelling quality and speed.
 \n\nRegistration Category: Full Access, Enhanced Access, Trade Exhibitor, 
 Experience Hall Exhibitor
URL:https://asia.siggraph.org/2023/full-program?id=papers_105&sess=sess209
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