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Optical Engineering

Recognizing partially occluded objects by a bidirectional associative memory neural network
Author(s): Nirwan Ansari; Xianjun Liu
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Paper Abstract

We develop a bidirectional associative memory (BAM)-based neural network to achieve high-speed partial shape recognition. To recognize objects that are partially occluded, we represent each object by a set of landmarks. The landmarks of an object are points of interest relative to the object that have important shape attributes. To achieve recognition, feature values (landmark values) of each model object are trained and stored in the network. Each memory cell is trained to store landmark values of a model object for all possible positions. Given a scene that may consist of several objects, landmarks in the scene are first extracted, and their corresponding landmark values are computed. Scene landmark values are entered to each trained memory cell. The memory cell is shown to be able to recall the position of the model object in the scene. A heuristic measure is then computed to validate the recognition.

Paper Details

Date Published: 1 July 1993
PDF: 10 pages
Opt. Eng. 32(7) doi: 10.1117/12.152189
Published in: Optical Engineering Volume 32, Issue 7
Show Author Affiliations
Nirwan Ansari, New Jersey Institute of Technology (United States)
Xianjun Liu, New Jersey Institute of Technology (United States)

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