Journal
INTERNATIONAL JOURNAL OF COMPUTER VISION
Volume 36, Issue 1, Pages 31-50Publisher
SPRINGER
DOI: 10.1023/A:1008120406972
Keywords
object recognition; appearance based recognition; statistical object representation; local appearance; real-time computer vision
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The appearance of an object is composed of local structure. This local structure can be described and characterized by a vector of local features measured by local operators such as Gaussian derivatives or Gabor filters. This article presents a technique where appearances of objects are represented by the joint statistics of such local neighborhood operators. As such, this represents a new class of appearance based techniques for computer vision. Based on joint statistics, the paper develops techniques for the identification of multiple objects at arbitrary positions and orientations in a cluttered scene. Experiments show that these techniques can identify over 100 objects in the presence of major occlusions. Most remarkably, the techniques have low complexity and therefore run in real-time.
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