Purwiyanti, Sri and Setyawan, FX. Arinto (2008) Penentuan Letak Derau pada Citra Berderau Salt And Pepper Berdasarkan Sifat Ketetanggaan Piksel. Prosiding Seminar Hasil Penelitian dan Pengabdian Masyarakat. pp. 216-223.

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Abstract

Salt and Pepper noise is caused by malfunctioning pixel in camera sensor, defect in memory locations of hardware or transmission in a noisy channel. The image pixel will be seen different from its neighbour pixel. For images corrupted by salt-and-pepper noise, the noisy pixels can take only the maximum and the minimum values in the dynamic range. This noise can be represented with black or white dot in the image. The median filter was once the most popular nonlinear filter for removing salt and pepper noise, because of its good power denoising and computational efficiency. However, the median filter method caused all pixel of the restored image will be changed, so the image become not original. Restored can be done for degraded pixel to keep the originality of image. Degraded pixel determination can be determinate by seeing neighbour pixels and its compared with salt and pepper noise characteristic. Pixel has degraded if it has been black or white color and its surrounding has not the same color. Proposed method has been tested to standard image, i.e. Lena and Mandrill with noise which has 0.01-0.7 density. The result of the Lena image is 97.7% and in the Mandrill is 98.05%.

Item Type: Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Fakultas Teknik (FT) > Prodi Teknik Elektro
Depositing User: Dr. Sri Purwiyanti
Date Deposited: 15 Mar 2019 02:54
Last Modified: 15 Mar 2019 02:54
URI: http://repository.lppm.unila.ac.id/id/eprint/10746

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