Gradients and compass operators: method of rotations

Artyom M. Grigoryan; Sos S. Agaian

doi:10.1117/12.2618353

27 May 2022 Gradients and compass operators: method of rotations

Artyom M. Grigoryan, Sos S. Agaian

Proceedings Volume 12100, Multimodal Image Exploitation and Learning 2022; 121000H (2022) https://doi.org/10.1117/12.2618353
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

In this paper we describe gradient operators that are defined along eight and more directions. For that, the model of rotations of coefficients inside the given mask is proposed. The set of such gradient operators, which is called the campus gradient is described on different examples. The 5×5 masks are considered for such operators, as the Sobel, Prewitt, Agaian gradients along 16 directions. The Nevatia-Babu, and Art-Sobel campus gradients are also described, and illustrative examples are given. The presented approach can be easier extended for large windows and even with more than 16 directions.

Citation Download Citation

Artyom M. Grigoryan and Sos S. Agaian "Gradients and compass operators: method of rotations", Proc. SPIE 12100, Multimodal Image Exploitation and Learning 2022, 121000H (27 May 2022); https://doi.org/10.1117/12.2618353

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