Line drawing is a style of image abstraction where the perception of image is conveyed using distinct straight or curved lines. However, extracting semantically salient lines is not trivial and mastered only by skilled artists. While many parametric filters have successfully extracted accurate and coherent lines, their results are sensitive to parameters tuning and easily leading to either excessive or insufficient amount of lines. In this work, we present an interactive system to generate concise line abstraction of arbitrary images via a few user specified strokes. Specifically, the user simply has to provide a few intuitive strokes on the input images, including tracing roughly along the edges and scribbling on the region of interest, through a sketching interface. The system then automatically extracts lines that are long, coherent and share similar textural structures from a corresponding highly detailed line drawing image. We have tested our
system with a wide variety of images. The experimental results show that our system outperforms state-of-the-art techniques in terms of quality and efficiency.