Enhancement of image edge sharpness and acutance

Arup Das; Rangaraj M. Rangayyan

doi:10.1117/12.271116

4 April 1997 Enhancement of image edge sharpness and acutance

Arup Das, Rangaraj M. Rangayyan

Proceedings Volume 3026, Nonlinear Image Processing VIII; (1997) https://doi.org/10.1117/12.271116
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

We have recently proposed an objective measure of edge sharpness or acutance of a region of interest (ROI) in the image. As acutance is related to image sharpness, one possible approach to image enhancement is to apply enhancement techniques in such a way as to increase the acutance of the ROI. Then, we may expect the perceived sharpness of the ROI to be increased as a result. A new image sharpening method designed on the basis of acutance is proposed in this paper. In this method, 1D operators are applied to sets of pixels along the normals at each boundary pixel of an ROI. It is shown that the method can improve sharpness without creating significant artifacts.

Citation Download Citation

Arup Das and Rangaraj M. Rangayyan "Enhancement of image edge sharpness and acutance", Proc. SPIE 3026, Nonlinear Image Processing VIII, (4 April 1997); https://doi.org/10.1117/12.271116

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