6 April 1998 Sharpening a noisy image by using fuzzy rules
Author Affiliations +
Proceedings Volume 3304, Nonlinear Image Processing IX; (1998); doi: 10.1117/12.304594
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States
Unsharp Masking (UM) is well known one of the most classical techniques in image enhancement. Due to the presence of the highpass filter, the UM operators very sensitive to noise. In order to conquer this defect, Ramponi has proposed the cubic UM operator which used not only highpass filtering but also edge sensor. By introducing edge sensor, edge enhancement is realized without noise amplification, to a certain extent. It is clear that the combination of edge sensors and highpass filter is effective for sharpening images corrupted by noise. In this paper, we introduce fuzzy rules in the UM operation. Fuzzy rules link the outputs of edge sensor and highpass filter to conclusions about sharpening component of processed image. We show how effectiveness of proposed method by some application results.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Akira Taguchi, Tomoaki Kimura, Mitsuhiko Meguro, "Sharpening a noisy image by using fuzzy rules", Proc. SPIE 3304, Nonlinear Image Processing IX, (6 April 1998); doi: 10.1117/12.304594; https://doi.org/10.1117/12.304594

Image enhancement

Fuzzy logic

Image processing


Image filtering

Image sensors

Signal to noise ratio


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