Robust vehicle detection in low-resolution aerial imagery

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Authors
  1. Sahli, S.
  2. Ouyang, Y.
  3. Sheng, S.
  4. Lavigne, D.A.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN)
Abstract
We propose a feature-based approach for vehicle detection in aerial imagery with 11.2 cm/pixel resolution. The approach is free of all constraints related to the vehicles appearance. The scale-invariant feature transform (SIFT) is used to extract keypoints in the image. The local structure in the neighbouring of the SIFT keypoints is described by 128 gradient orientation based features. A Support Vector Machine is used to create a model which is able to predict if the SIFT keypoints belong to or not to car structures in the image. The collection of SIFT keypoints with car label are clustered in the geometric space into subsets and each subset is associated to one car. This clustering is based on the Affinity Propagation algorithm modified to take into account specific spatial constraint related to geometry of cars at the given resolution.
Report Number
DRDC-VALCARTIER-SL-2010-488 — Scientific Literature
Date of publication
01 Apr 2010
Number of Pages
8
DSTKIM No
CA035191
CANDIS No
534733
Format(s):
Electronic Document(PDF)

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