Panorama Tools provides a powerful framework for re-projecting and blending multiple source images into immersive panoramics of many types.

Panorama Tools (also known as PanoTools) are a suite of programs and libraries originally written by the German physics and mathematics professor Helmut Dersch.
Panorama Tools provides a powerful framework for re-projecting and blending multiple source images into immersive panoramics of many types. An updated version of the Panorama Tools library serves as the underlying core engine for many software panorama GUI front-ends.
Dersch started development on Panorama Tools in 1998, producing software available for creating panoramas and more, but had to stop development in 2001 due to legal harassment and claims of patent infringement by the company IPIX.[1] Dersch released the core library (pano12) and some of the programs of Panorama Tools under the terms of the GNU General Public License. The rest of the applications were made available as binary executables only and for free without a copyleft license.

The development of the source code of Panorama Tools was continued by some members of the original Panorama Tools mailing list. In December 2003 they initiated a free software project which is currently hosted by SourceForge. SourceForge requires that all hosted software is released under an open source license. For this reason Dersch's unlicensed binaries are not hosted there, although they can can still be found on mirror websites.
On 5 August, 2007, Dersch announced his intention to relicense the Panorama Tools source code.[2] On 9 August, 2007, Dersch changed the license to a GNU Lesser General Public License.[3]
Sub-components

An example of Panorama Tools' ability to remap images shot with a fisheye lens into rectilinear perspective.

PanoTools consists of the following components:
PTEditor
    Java interactive panorama editor.
PTPicker
    Java front end to panorama stitcher and other tools. It provides a graphical interface for feature point selection and position optimization.
PTCrypt
    Java tool for scrambling pictures intended to be viewed on-line with PTViewer.
PTStitcher
    Panorama stitching tool which remaps, adjusts and combines arbitrary images to panoramic views.
PTOptimizer†
    Optimizes positions and sizes of images using control-point data.
PTStereo
    Creates 3-dimensional objects from 2 or more stereoscopic images.
PTInterpolate
    Physically valid true view interpolator. Given two images of the same scene taken from different positions, this tool creates views from any intermediate position.
PTMorpher
    Morphing tool.
PTAverage
    Averages images to reduce noise and enhance density.
PTStripe
    Combines images into movie-stripes for viewing in object-viewers (PTMovie extension to PTViewer).
PanoTools Plugins
    Photoshop, GraphicConverter and GIMP plug-ins for image correction and remapping. Also compatible to many other programs that can use Photoshop 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.

Further developments.
In 2006 the functionality o.f 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.

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 enblend), which in many cases make interacting directly with the programs in the original Panorama Tools toolset unnecessary.

Download.

Screenshots.