plug-ins. pano12 library† The underlying panorama library, currently used by several different panorama front-ends and command line programs. pano13 library† Current version of the library. No longer compatible with programs for which no source code is available. †Open source. Further developments In 2006 the functionality of PTstitcher was reproduced by the developers of Panorama Tools. Its functionality was broken into several program, in an attempt to modularize it: PTmender† Remaps one image at a time PTblender† Implements the rudimentary colour correction algorithm found in later versions of PTstitcher PTmasker† Computes stitching masks. It implements the ability to increase depth-of-field by stacking images PTroller† Takes a set of images and merges them into a single one PTcrop† Crops an image to its outer rectangle. PTuncrop† Opposite of PTcrop: takes a cropped file and creates an uncropped one. PTtiff2psd† Takes a series of input images and creates a Photoshop PSD file where each input file is a layer. †Open source. Front-ends and applications To make working with Panorama Tools easier and to add functionality, many interactive, graphical front-ends to Panorama Tools have been developed, both open source (e.g. Hugin) and commercial (e.g. PTgui and PTMac), along with a variety of other companion applications (e.g. smartblend and ), which in many cases make interacting directly with the programs in the original Panorama Tools toolset unnecessary. Further reading The software Panorama Tools is mentioned and covered in several books, e.g. Jacobs, Corinna - Interactive Panoramas: Techniques for Digital Panoramic Photography Andrews, Philip - 360 Degree Imaging: The Photographer's Panoramic Virtual Reality Manual Gulbins, Jürgen & Steinmüller, Uwe - Art of RAW Conversion: How to Produce Art-Quality Photos with Adobe Photoshop CS2 and Leading RAW Converters References External links Helmut Dersch author's current site. Helmut Dersch old page author's site last state before it was taken offline in 2001. PanoTools.org primary community page recommended by the SourceForge project Free graphics software Free software programmed in C Free photo stitching software Photo software for Linux