ChronoFab: Fabricating Motion

We present ChronoFab, a 3D modeling tool to craft motion sculptures, tangible representations of 3D animated models, visualizing an object's motion with static, transient, ephemeral visuals that are left behind. Our tool casts 3D modeling as a dynamic art-form by employing 3D animation and dynamic simulation for the modeling of motion sculptures. Our work is inspired by the rich history of stylized motion depiction techniques in existing 3D motion sculptures and 2D comic art. Based on a survey of such techniques, we present an interface that enables users to rapidly explore and craft a variety of static 3D motion depiction techniques, including motion lines, multiple stroboscopic stamps, sweeps and particle systems, using a 3D animated object as input. In a set of professional and non-professional usage sessions, ChronoFab was found to be a superior tool for the authoring of motion sculptures, compared to traditional 3D modeling workflows, reducing task completion times by 79%.

[1]  Eitan Grinspun,et al.  Computational design of linkage-based characters , 2014, ACM Trans. Graph..

[2]  Pierre Dragicevic,et al.  Supporting the design and fabrication of physical visualizations , 2014, CHI.

[3]  Ben Shneiderman,et al.  Creating creativity: user interfaces for supporting innovation , 2000, TCHI.

[4]  Takeo Igarashi,et al.  Interactive motion photography from a single image , 2010, The Visual Computer.

[5]  Nobuyuki Umetani,et al.  Cross-sectional structural analysis for 3D printing optimization , 2013, SIGGRAPH ASIA Technical Briefs.

[6]  Markus H. Gross,et al.  Computational design of actuated deformable characters , 2013, ACM Trans. Graph..

[7]  Wojciech Matusik,et al.  Computational design of mechanical characters , 2013, ACM Trans. Graph..

[8]  G G Haydu,et al.  Perception of Apparent Motion. , 1960, Science.

[9]  Björn Hartmann,et al.  A series of tubes: adding interactivity to 3D prints using internal pipes , 2014, UIST.

[10]  Robert Aish,et al.  PHYSICS-BASED GENERATIVE DESIGN , 2009 .

[11]  Wilmot Li,et al.  Designing and fabricating mechanical automata from mocap sequences , 2013, ACM Trans. Graph..

[12]  Ivan Poupyrev,et al.  Printed optics: 3D printing of embedded optical elements for interactive devices , 2012, UIST.

[13]  Björn Hartmann,et al.  Sauron: embedded single-camera sensing of printed physical user interfaces , 2013, UIST.

[14]  Pierre Dragicevic,et al.  Evaluating the efficiency of physical visualizations , 2013, CHI.

[15]  Sylvain Lefebvre,et al.  Make it stand , 2013, ACM Trans. Graph..

[16]  Jürgen Döllner,et al.  Depicting dynamics using principles of visual art and narrations , 2005, IEEE Computer Graphics and Applications.

[17]  Kelvin Sung,et al.  Spatial-Temporal Antialiasing , 2002, IEEE Trans. Vis. Comput. Graph..

[18]  Desney S. Tan,et al.  Phosphor: explaining transitions in the user interface using afterglow effects , 2006, UIST.

[19]  Eadweard Muybridge,et al.  Animals in Motion , 1957 .

[20]  Pedro Lopes,et al.  Interactive construction: interactive fabrication of functional mechanical devices , 2012, UIST.

[21]  Michael Haller,et al.  Non-photorealistic rendering techniques for motion in computer games , 2004, CIE.

[22]  Maic Masuch,et al.  Speedlines: depicting motion in motionless pictures , 1999, SIGGRAPH '99.

[23]  Mark J. Harris,et al.  Stylized rendering techniques for scalable real-time 3D animation , 2000, NPAR '00.

[24]  Marta Braun,et al.  Picturing Time: The Work of Etienne-Jules Marey (1830-1904) , 1995 .

[25]  Markus H. Gross,et al.  Programmable motion effects , 2010, ACM Trans. Graph..

[26]  J. Cutting.  Representing Motion in a Static Image: Constraints and Parallels in Art, Science, and Popular Culture , 2002, Perception.

[27]  F. Marinetti.  The Founding and Manifesto of Futurism , 2016 .

[28]  Takeo Igarashi,et al.  Plushie: an interactive design system for plush toys , 2007, ACM Trans. Graph..

[29]  Baining Guo,et al.  Motion-guided mechanical toy modeling , 2012, ACM Trans. Graph..

[30]  Jami J. Shah,et al.  Parametric and Feature-Based CAD/CAM: Concepts, Techniques, and Applications , 1995 .

[31]  Takeo Igarashi,et al.  SketchChair: an all-in-one chair design system for end users , 2011, Tangible and Embedded Interaction.

[32]  A. D. Manning,et al.  Understanding Comics: The Invisible Art , 1993 .