Combining anisotropic diffusion and alternating sequential filtering for satellite image enhancement and smoothing

Konstantinos G. Karantzalos

doi:10.1117/12.511239

5 February 2004 Combining anisotropic diffusion and alternating sequential filtering for satellite image enhancement and smoothing

Konstantinos G. Karantzalos

Author Affiliations +

Proceedings Volume 5238, Image and Signal Processing for Remote Sensing IX; (2004) https://doi.org/10.1117/12.511239
Event: Remote Sensing, 2003, Barcelona, Spain

Abstract

Automatic information extraction requires a processing system to encapsulate the content of the image. This is a non-trivial task, because of the complexity of the information stored in images. In this paper satellite image enhancement and smoothing towards automatic feature extraction is accomplished through an effective serial application of anisotropic diffusion processing and alternating sequential filtering. Nonlinear diffusion processes can be found in many recent methods for image processing and computer vision. A robust anisotropic diffusion filtering is used with Tukey's biweight robust error norm for "edge-stopping" function, which preserves sharper boundaries than previous formulations and improves the automatic stopping of the diffusion. A well-known class of morphological filters, alternating sequential filtering is applied afterwards for a more extended enhancement and smoothing. The effective processing scheme is demonstrated with examples; Results appear promising.

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Konstantinos G. Karantzalos "Combining anisotropic diffusion and alternating sequential filtering for satellite image enhancement and smoothing", Proc. SPIE 5238, Image and Signal Processing for Remote Sensing IX, (5 February 2004); https://doi.org/10.1117/12.511239

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