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2 November 2004 Correlation-based rotational signature of planar binary objects
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In this paper we introduce the affine spatial overlap operation defined as a generalization of the two-dimensional convolution and cross-correlation operations. Our attention is focused on the rotational overlap operation and some of its mathematical properties as well as its application to shape description. Based on the auto-rotational overlap operation, a one-dimensional signature is proposed as a shape representation for planar binary objects with bounded support. We provide illustrative examples of its digital computation using different binary objects. In addition, physical realization of the 2-D rotational overlap operation is demonstrated with a hybrid optical-digital system for real time processing. The experimental setup uses a microcomputer controlled high-precision rotatory stage for performing analog rotations at the input plane of an incoherent two lens correlator architecture.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gonzalo Urcid-Serrano, Alfonso Padilla-Vivanco, Alejandro Cornejo-Rodriguez, and Javier Baez-Rojas "Correlation-based rotational signature of planar binary objects", Proc. SPIE 5558, Applications of Digital Image Processing XXVII, (2 November 2004);

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