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Viewpoint Adaptation for Person Detection

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Authors
Wang, P
Collins, L
Morton, K
Torrione, P
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Abstract
An object detector performs suboptimally when applied to image data taken from a viewpoint different from the one with which it was trained. In this paper, we present a viewpoint adaptation algo- rithm that allows a trained single-view person detector to be adapted to a new, distinct viewpoint. We first illustrate how a feature space trans- formation can be inferred from a known homography between the source and target viewpoints. Second, we show that a variety of trained clas- sifiers can be modified to behave as if that transformation were applied to each testing instance. The proposed algorithm is evaluated on a new synthetic multi-view dataset as well as images from the PETS 2007 and CAVIAR datasets, yielding substantial performance improvements when adapting single-view person detectors to new viewpoints while increas- ing the detector frame rate. This work has the potential to improve person detection performance for cameras at non-standard viewpoints while simplifying data collection and feature extraction
Type
Other article
Subject
viewpoint
domain
adaptation
perspective
projection
pedestrian
detection
Permalink
https://hdl.handle.net/10161/13502
Published Version (Please cite this version)
10.7924/G87P8W96
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Scholars@Duke

Wang

Patrick Wang

Adjunct Assistant Professor in the Department of Electrical and Computer Engineering
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