SLIC Superpixels Compared to State-of-the-Art Superpixel Methods

Authors:
Radhakrishna Achanta;Appu Shaji;Kevin Smith;Aurelien Lucchi;Pascal Fua;Sabine Susstrunk
Affiliations:
Ecole Polytechnique Federale de Lausanne, Lausanne;Ecole Polytechnique Federale de Lausanne, Lausanne;Ecole Polytechnique Federale de Lausanne, Lausanne;Ecole Polytechnique Federale de Lausanne, Lausanne;Ecole Polytechnique Federale de Lausanne, Lausanne;Ecole Polytechnique Federale de Lausanne, Lausanne
Venue:
IEEE Transactions on Pattern Analysis and Machine Intelligence
Year:
2012

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Abstract

Computer vision applications have come to rely increasingly on superpixels in recent years, but it is not always clear what constitutes a good superpixel algorithm. In an effort to understand the benefits and drawbacks of existing methods, we empirically compare five state-of-the-art superpixel algorithms for their ability to adhere to image boundaries, speed, memory efficiency, and their impact on segmentation performance. We then introduce a new superpixel algorithm, simple linear iterative clustering (SLIC), which adapts a k-means clustering approach to efficiently generate superpixels. Despite its simplicity, SLIC adheres to boundaries as well as or better than previous methods. At the same time, it is faster and more memory efficient, improves segmentation performance, and is straightforward to extend to supervoxel generation.