Use of directional consistency with Sobel edge detector

Ikram E. Abdou; Todd B. Johnson; Daniel T. Long; Surachai Sutha

doi:10.1117/12.21322

1 September 1990 Use of directional consistency with Sobel edge detector

Ikram E. Abdou, Todd B. Johnson, Daniel T. Long, Surachai Sutha

Proceedings Volume 1297, Hybrid Image and Signal Processing II; (1990) https://doi.org/10.1117/12.21322
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

Although there are many edge detection operators that are used in Automatic Target Recognition (ATR) Systems we believe that the required performance can be accomplished using simple operators such as the Sobel operator with minor modification through pre and postprocessing. In this paper we describe two methods that enhance the Sobel performance. The first which can be considered pre processing increases the effective size of the operator to 5*5 The second which is postprocessing modifies the edge magnitude output based on the consistency of the local edge direction. Both methods can be easily implemented on SIMD machines and they are effective in deleting isolated edge points which usually are not part of interesting targets. We will describe the implementation of these techniques on a SIMD machine and study their effect on the performance of an ATR system. 1.

Citation Download Citation

Ikram E. Abdou, Todd B. Johnson, Daniel T. Long, and Surachai Sutha "Use of directional consistency with Sobel edge detector", Proc. SPIE 1297, Hybrid Image and Signal Processing II, (1 September 1990); https://doi.org/10.1117/12.21322

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