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Pré-Publication, Document De Travail Année : 2015

Weakly Supervised Object Localization with Multi-fold Multiple Instance Learning

Ramazan Gokberk Cinbis
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Jakob Verbeek
Cordelia Schmid
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Résumé

Object category localization is a challenging problem in computer vision. Standard supervised training requires bounding box annotations of object instances. This time-consuming annotation process is sidestepped in weakly supervised learning. In this case, the supervised information is restricted to binary labels that indicate the absence/presence of object instances in the image, without their locations. We follow a multiple-instance learning approach that iteratively trains the detector and infers the object locations in the positive training images. Our main contribution is a multi-fold multiple instance learning procedure, which prevents training from prematurely locking onto erroneous object locations. This procedure is particularly important when using high-dimensional representations, such as Fisher vectors and convolutional neural network features. We also propose a window refinement method, which improves the localization accuracy by incorporating an objectness prior. We present a detailed experimental evaluation using the PASCAL VOC 2007 dataset, which verifies the effectiveness of our approach.
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Dates et versions

hal-01123482 , version 1 (04-03-2015)
hal-01123482 , version 2 (03-09-2015)
hal-01123482 , version 3 (22-02-2016)

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Ramazan Gokberk Cinbis, Jakob Verbeek, Cordelia Schmid. Weakly Supervised Object Localization with Multi-fold Multiple Instance Learning. 2015. ⟨hal-01123482v1⟩
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