Panorama tools applications

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[[Barrel distortion|Barrel]], [[Pincushion distortion|pincushion]] and even wavy lens distortion can be corrected with panotools [[lens correction model]]. A project dedicated to this purpose is [[PTLens]] by Thomas Niemann. Tutorials on how to find suitable lens correction parameters are several on the web. A small selection:
 
[[Barrel distortion|Barrel]], [[Pincushion distortion|pincushion]] and even wavy lens distortion can be corrected with panotools [[lens correction model]]. A project dedicated to this purpose is [[PTLens]] by Thomas Niemann. Tutorials on how to find suitable lens correction parameters are several on the web. A small selection:
 
*Philo's tutorial on how to correct distortion and perspective in one go: [http://www.philohome.com/barrelpers/barrelpers.htm]
 
*Philo's tutorial on how to correct distortion and perspective in one go: [http://www.philohome.com/barrelpers/barrelpers.htm]
*Thomas Niemann's description of the calibration process: [http://epaperpress.com/pano/calDistort.html] (eventually follow 'Calibration' 'Lens Distortion')
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*Thomas Niemann's description of the calibration process: [http://epaperpress.com/pano/calDistort.html] [http://custom-essay-writing-service.org/faq.php write my essay] (eventually follow 'Calibration' 'Lens Distortion')
 
*Using [[straight line control points]]: [http://www.erik-krause.de/verzeichnung/distort_en.htm]
 
*Using [[straight line control points]]: [http://www.erik-krause.de/verzeichnung/distort_en.htm]
  
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Another nice tutorial by Philo, showing how to correct perspective and [[lens distortion]] in one go:
 
Another nice tutorial by Philo, showing how to correct perspective and [[lens distortion]] in one go:
[http://www.philohome.com/barrelpers/barrelpers.htm]
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[http://www.philohome.com/barrelpers/barrelpers.htm] [http://essaywritingservices.org/book-report.php online book reports]
  
 
===Chromatic aberration correction===
 
===Chromatic aberration correction===

Revision as of 14:18, 4 May 2010

There are several tools in the panorama tools package by Helmut Dersch that are intended for other use than mere panorama creation or display. And of course there are lots of possibilities to use panorama tools core functionality for non-panoramic purposes.

Contents

Tools in the package

The tools for Panorama Tools consist of Java apps, plug-ins, and applications. For most of these tools there is a small readme inside the package. Apart from that there is almost no documentation found on the web. Any contribution is welcome!

PTEditor

Java Interactive Panorama Editor.

PTPicker

Java graphical interface frontend for control point selection used by PTStitcher, PTStereo, PTInterpolate, PTMorpher, and other tools. Mostly replaced by new GUIs of Hugin, PTGui, PTMac, and PTAssembler.

PTCrypt

Java app to encrypt panoramas to only display from one web location.

PTOptimizer

The tool for parameter optimization of source images. Calculates the position and lens correction parameters from a set of control points representing features in overlapping images.

PTStitcher

The main panorama stitching tool which remaps, adjusts and combines arbitrary images to panoramic views.

PTAverage

reduces noise in digital images by averaging several scans. Example on Helmut Dersch's page: [1]

PTInterpolate

given two images of the same scene taken from different viewpoints, this tool creates any intermediate view.

PTMorpher

morphing tool. A nice tutorial is found on 4pi.org: [2]

PTStereo

creates 3-dimensional objects from pairs or many images

PTStripe

combines images into movie stripes for viewing in Object-viewers.

Plugins

See Panorama Tools Plugins for details.

PTAdjust

(Former name: Adjust) Plug-in to extract and insert images from a panorama.

PTCorrect

(Former name: Correct) Plug-in to correct problems with images.

PTRemap

(Former name: Remap) Change an image from one projection to another projection.

PTPerspective

(Former name: Perspective) Simulates a shift lens in software for normal or fisheye lenses.

PTViewer Extensions

These extensions are described in total on Helmut Dersch's page: [3] (Descriptions taken mostly from there)

PTCompass

Inserts a user defined image which rotates synchronized with the pan-angle. It may be used as navigation and orientation aid. The image may be placed anywhere in the appletwindow, and it can rotate in both directions: like a real compass, or opposite.

PTMovies

Inserts a set of images into the panoramic image or the viewer window, depending on the warp-parameter. If warp is true (default) the images are inserted into the panorama and they have to be warped to the panoramic projection. They are displayed perspectively corrected in PTViewer and appear like natural elements of the VR-scene. Example on Helmut Dersch's page: [4]

PTMedia

Many media formats are available in PTViewer if JMF is installed on the host computer. These include avi-video, linear quicktime video, flash 2, mpeg1/2/3, many soundformats etc. See the Sun Java site for supported media types.

PTObject

displays 3D-objects using a set of images similar to the Apple QTVR-viewer. The images are organized in horizontal stripes, and may cover several rows. There is an optional mask image, that can be supplied to make portions of the original image transparent. Example (with a panorama as background!) on Helmut Dersch's page: [5]

PTZoom

High resolution zoomable images can be inserted using this extension. These images are seamlessly integrated in the viewer window, and automatically show up when the user pans and zooms into the respective feature. PTZoom uses rectilinear images from any normal or telephoto lens. Example on Helmut Dersch's page: [6]

Non-panoramic uses of panotools

Due to its incredible flexibility panotools core functions can be used for a wide range of non-panoramic uses including (but not limited to) the following:

Lens distortion correction

Barrel, pincushion and even wavy lens distortion can be corrected with panotools lens correction model. A project dedicated to this purpose is PTLens by Thomas Niemann. Tutorials on how to find suitable lens correction parameters are several on the web. A small selection:

Perspective correction

Panotools is able to simulate (geometrically exact) a shift lens. See Perspective correction for details.

Another nice tutorial by Philo, showing how to correct perspective and lens distortion in one go: [10] online book reports

Chromatic aberration correction

Since transversal chromatic aberration is essentially a different lens distortion for different colors, panotools can correct it by using different correction parameters on the different color channels. See Chromatic aberration page for details.

Different uses with 'Correct' plugin

The panotools Correct plugin can perform various tasks including:

Photographing in Tight Spaces

Since a fisheye allows for a very wide field of view it can be used to shoot in tight spaces or if you can't get enough distance for a wide angle shot. Panotools will remap to a more conventional view:

  • A nice tutorial on tight spaces by 'Big' Ben Kreunen: [11]
  • Architectural example on Helmut Dersch's page: [12]

Stitching Flat Images

such as a large paper document, scanned in pieces on a flatbed scanner. See How to stitch flat images.

--Erik Krause 12:14, 16 Jul 2005 (EDT)

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