The automatic service is already popular online, with Japanese artists eager to share their impressive results.
Cleaning up rough sketches and turning faint pencil strokes into bold outlines can now be done at the click of a button, thanks to a new service developed by a research group at Waseda University Graduate School of Science and Engineering. The project, which began in autumn 2015, was announced to the world at Siggraph 2016, the world’s largest annual event in computer graphics and interactive techniques, held in California in July this year.
▼ The group demonstrated the results of their sketch simplification model on Twitter with this before-and-after image at the beginning of September.
SIGGRAPH2016で発表した「ラフスケッチの自動線画化」のウェブサービスを公開しました。私の下手な蛙も線画化できます。ぜひ試してみてください。https://t.co/fGSXrUeNNq pic.twitter.com/UTE3GPrrio
— シモセラ エドガー (@jikihakase) September 2, 2016
▼ They followed up with another impressive example the next day.
みんなウェブサービスを使っていただき、ありがとうございます。もうすこし自分の結果を見せさせていただきます。下書きの上にペンで線画化し、それを自動線画化するとかなりうまくいきます。これは多分一番簡単な使い方です。 pic.twitter.com/RXJGdi3ZR9
— シモセラ エドガー (@jikihakase) September 3, 2016
With the online service available for public use, eager artists around the country were quick to trial the system, sharing their results on Twitter.
@元ツイートのサービス試してみました。
— はくし (@kuuriplan) September 3, 2016
手元の死蔵素材(らくがき)を読みこませるとこんな感じに!
これは適性のある素材だったみたい。 pic.twitter.com/WqSXepo1CX
全層畳込みニューラルネットワークによるラフスケッチの自動線画化 https://t.co/X3CuDWTagX pic.twitter.com/rGdIy5ZaD2
— どる (@doru) September 19, 2016
▼ The service handles simple sketches as well as more complex works.
あれから数枚試した所、創作キャラで版権作品のやられっぷりをトレスしたものが上手く線画化されました……。 pic.twitter.com/3z8EpLQmJA
— レッドリーフ (@R1eD4L3E6aF0vok) September 7, 2016
自動線画化使わせてもらったけどまあそんな甘くはないよね・・・でもすごい・・・ https://t.co/dnngnUjPIg pic.twitter.com/qJkFi1fVXD
— えつこ (@etkhachi) September 24, 2016
And while it works incredibly well at transforming plain sketches, the model simplifies coloured lines just as easily.
https://twitter.com/sawsusg/status/772018471974555649▼ Even more impressive results can be seen when ASCII artworks are processed!
ふむ。 pic.twitter.com/Ty1HSWkVYp
— 某蛔モチ (@mochiAAcat) September 3, 2016
AA→線画https://t.co/U9iLohHcZ1 pic.twitter.com/0jkqP3jY9L
— OsciiArt◆SPNEXTcRxQ (@osciiart) September 3, 2016
The service is free for anyone to enjoy, simply by uploading a file and pressing a button on their website. While it’s incredibly fast and easy to use, the maths behind the neural network-based Sketch Simplification is a complex and impressive web of details. To read all about the model and how it works, check out their brilliant research paper in English online.
Source: Iroiro
Top Image: Waseda University
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