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Sharpens digital images

'refocus' is a Gimp plug-in that sharpens images. It is meant for use with scanned photos and slides, and in many cases produces much better results than the sharpen or unsharp mask plugins. Using a technique called FIR Wiener filtering, the program refocuses an image that may have gotten blurry during scanning or scaling. It includes a preview feature that helps you to select the best parameters.


User guide included and available in HTML format from


Download version 0.9.0 (stable)
released on 4 February 2003

VCS Checkout


Related Projects


LicenseVerified byVerified onNotes
License:GPLv2orlaterJanet Casey4 February 2003

Leaders and contributors

Ernst Lippe Maintainer

Resources and communication

AudienceResource typeURI
DeveloperVCS Repository Webview
Bug Tracking,Developer,

Software prerequisites

Required to buildGTK+ 2.0 or later
Weak prerequisiteATLAS (
Required to useGimp 1.2 or later
Required to useGTK+ 2.0 or later
Required to buildGimp 1.2 or later

This entry (in part or in whole) was last reviewed on 27 January 2017.


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