雖然已經有許多參數濾波器可以成功地萃取出準確且連續的線條，但是線條萃取的結果對於參數的調整十分敏感，時常導致過多的線條或是不足夠的線條。
我們提出了一個以描繪為基礎的系統，針對各種以線條組成的圖像，系統即根據使用者描繪的特定筆劃來引導出不同的抽象化線條。
在使用此系統時，使用者僅需大略地描繪物體輪廓，或是以線條塗鴉的方式標識出感興趣的區域，即可得到連貫或是結構相似的的抽象化線條。
我們針對此系統測試了各種以線條組成的圖像，實驗結果顯示此系統可以準確地萃取出理想的抽象化線條，其品質亦優於先前的技術。

While many parametric filters have successfully extracted accurate and
coherent lines, their results are sensitive to parameters tuning, leading to
either excessive or insufficient amount of lines. In this work, we present a
sketch-based system to guide the line abstraction of arbitrary images using
the user specified strokes. With the assistance of our system, the user simply
has to provide a few intuitive strokes, including tracing roughly along
the edges and scribbling on the regions of interest. The system then automatically
extracts from a detailed line abstraction those lines that are long,
coherent, and share similar structures in texture to conform the user’s intention.
We have tested our system on a wide variety of images. The experimental
results show that our system can generate concise line drawings and
outperforms state-of-the-art techniques in terms of quality and efficiency.

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