The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A Decision based restoration algorithm using Unsymmetrical Trimmed Mode filter for gray scale images that are corrupted by salt and pepper noise is proposed. The processed pixel is examined for 0 or 255; if checked pixel is equal to 0 or 255, then it is considered as noisy pixel else not noisy. If the pixel is noisy and all the four neighbors are noisy then replace the noisy pixel with mean of 4 neighbors...
An improved detail preserving filter for the elimination of high density salt and pepper noise is proposed. A fixed 3x3 window is kept constant for the increasing noise densities. The pixel is termed as noisy, if the processed pixel is between the outliers. The corrupted pixel is replaced by unsymmetrical trimmed mean or median or midpoint or mean of the current processing window based on the content...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.