Robotic Writing of Arbitrary Unicode Characters Using Paintbrushes

Zingrebe, Silvan; Gülzow, Jörg Marvin; Deussen, Oliver

Robotic Writing of Arbitrary Unicode Characters Using Paintbrushes

Dateien

Zingrebe_2-c2turfc4oduf0.pdf(5.54 MB)

Datum

2023

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Robotics ; 12 (2023), 3. - 72. - MDPI. - eISSN 2218-6581

Zusammenfassung

Human handwriting is an everyday task performed regularly by most people. In the domain of robotic painting, multiple calligraphy machines exist which were built to replicate some aspects of human artistic writing; however, most projects are limited to a specific style of handwriting, often Chinese calligraphy. We propose a two-stage pipeline that allows industrial robots to write text in arbitrary typefaces and scripts using paintbrushes. In the first stage, we extract a set of strokes from character glyphs which are similar to how humans choose strokes during writing. In the second stage, we generate corresponding brush trajectories by applying a brush model to the extracted strokes. Our brush model computes the required brush pressure to achieve the given stroke width while also accounting for brush lag. We also present a method to automatically measure the parameters needed to predict brush lag by painting and recording calibration patterns. Our method generates trajectories for text in any given typeface, which, when executed by a robotic arm, results in legible written text. We can render most writing systems, excluding emoji and ligatures, in which arbitrary texts can be specified to write.

Fachgebiet (DDC)

004 Informatik

Schlagwörter

robotic writing,robotic painting,stroke extraction,brush dynamics,fonts,unicode,automated artwork

Zitieren

ISO 690

ZINGREBE, Silvan, Jörg Marvin GÜLZOW, Oliver DEUSSEN, 2023. Robotic Writing of Arbitrary Unicode Characters Using Paintbrushes. In: Robotics. MDPI. 12(3), 72. eISSN 2218-6581. Available under: doi: 10.3390/robotics12030072

BibTex

@article{Zingrebe2023Robot-66922,
  year={2023},
  doi={10.3390/robotics12030072},
  title={Robotic Writing of Arbitrary Unicode Characters Using Paintbrushes},
  number={3},
  volume={12},
  journal={Robotics},
  author={Zingrebe, Silvan and Gülzow, Jörg Marvin and Deussen, Oliver},
  note={Article Number: 72}
}

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