MichaelVinther Posted April 6, 2012 Share Posted April 6, 2012 The Laplacian pyramid can be used to improve the overall illumination of photos, typically useful when part of the scene is in shadow. It can also smooth or enhance details in a photo without smoothing edges or introduce halos. Similar filters are used for tonemapping HDR pictures. Unfortunately the processing can take long time on big photos, so have patience... The filter was inspired by the paper "Local Laplacian Filters: Edge-aware Image Processing with a Laplacian Pyramid" by Sylvain Paris, Samuel W. Hasinoff and Jan Kautz. (http://people.csail..../2011/siggraph/) Example on detail enhancement (photo from Toul Sleng prison, Cambodia, © Michael Vinther 2012): Parameters used for example: Download: https://www.fosshub.com/Image-Analyzer-old.html?dwl=LaplacianPyramidFilterPDN1.1.2.zip NOTE: If you have trouble with the above link, you can download it from here: https://www.dropbox.com/scl/fo/ybrslwbxmtpf4mh446k4j/h?dl=0&rlkey=hma69px4yhpa31fawc88kyper Unzip the file in the Paint.NET\Effects folder or Documents\paint.net App Files\Effects if PDN was installed from the Windows Store. You can access the feature from the Effects | Photo menu. If you like this, please consider donating to the author at http://meesoft.logicnet.dk/Analyzer/support.htm 1 8 Quote Michael Vinther Link to comment Share on other sites More sharing options...
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