Abstract
Cosegmentation methods segment multiple related images jointly, exploiting their shared appearance to generate more robust foreground models. While existing approaches assume that an oracle will specify which pairs of images are amenable to cosegmentation, in many scenarios such external information may be difficult to obtain. This is problematic, since coupling the “wrong” images for segmentation—even images of the same object class—can actually deteriorate performance relative to single-image segmentation. Rather than manually specify partner images for cosegmentation, we propose to automatically predict which images will cosegment well together. We develop a learning-to-rank approach that identifies good partners, based on paired descriptors capturing the images’ amenability to joint segmentation. We compare our approach to alternative methods for partnering images, including basic image similarity, and show the advantages on two challenging datasets.
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Notes
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We use the terms cosegmentation, joint segmentation, and weakly supervised segmentation interchangeably.
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Alternatively, one could use regression. However, ranking has the advantage of giving us more control over which training tuples are enforced, and it places emphasis only on the relative scores (not absolute values), which is what we care about for deciding which partner is best.
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This research is supported in part by ONR award N00014-12-1-0068.
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Jain, S.D., Grauman, K. (2015). Which Image Pairs Will Cosegment Well? Predicting Partners for Cosegmentation. In: Cremers, D., Reid, I., Saito, H., Yang, MH. (eds) Computer Vision -- ACCV 2014. ACCV 2014. Lecture Notes in Computer Science(), vol 9005. Springer, Cham. https://doi.org/10.1007/978-3-319-16811-1_12
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