Non-local Operational Anisotropic Diffusion Filter

Autor:	Cappabianco, Fábio A. M., da Silva, Petrus P. C. E.
Rok vydání:	2018
Předmět:	Electrical Engineering and Systems Science - Image and Video Processing Computer Science - Computer Vision and Pattern Recognition
Druh dokumentu:	Working Paper
Popis:	High-frequency noise is present in several modalities of medical images. It originates from the acquisition process and may be related to the scanner configurations, the scanned body, or to other external factors. This way, prospective filters are an important tool to improve the image quality. In this paper, we propose a non-local weighted operational anisotropic diffusion filter and evaluate its effect on magnetic resonance images and on kV/CBCT radiotherapy images. We also provide a detailed analysis of non-local parameter settings. Results show that the new filter enhances previous local implementations and has potential application in radiotherapy treatments. Comment: 7 pages, 10 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1812.04708 Zobrazit plný text záznamu View this record from Arxiv