Difference between revisions of "Glossary"

Revision as of 23:01, 18 November 2007

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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-Please add the entry alphabetically to the list.
+<!-- Please don't add entries here. Instead use the Glossary template on the respective page. For Details please see [[Category:Glossary]] -->
-{{compactTOC}}
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+{{CompactTOC}}
+{{GlossaryParagraph|A}}
-== A ==
+{{GlossaryParagraph|B}}
-'''[[Aliasing]]''' - less than optimal resampling that causes "jaggies" and Moire effects.
+{{GlossaryParagraph|C}}
+{{GlossaryParagraph|D}}
-'''[[Alpha channel]]''' - an image channel containing a mask or selection.
+{{GlossaryParagraph|E}}
+{{GlossaryParagraph|F}}
-'''[[Field_of_View|Angle of View]]''' The angle in degrees that a projection covers.
+{{GlossaryParagraph|G}}
+{{GlossaryParagraph|H}}
-'''[[Aspect Ratio]]''' - the ratio (proportion) between height and width of an image.
+{{GlossaryParagraph|I}}
+{{GlossaryParagraph|J}}
-== B ==
+{{GlossaryParagraph|K}}
+{{GlossaryParagraph|L}}
-'''[[Banding]]''' Visible steps in smooth gradients.
+{{GlossaryParagraph|M}}
+{{GlossaryParagraph|N}}
-'''[[Barrel distortion]]''' A distortion produced by the lens itself which causes straight lines to be bent outwards.
+{{GlossaryParagraph|O}}
+{{GlossaryParagraph|P}}
-== C ==
+{{GlossaryParagraph|Q}}
-'''[[CCD]]''' A type of image sensor used in digital cameras.
+{{GlossaryParagraph|R}}
+{{GlossaryParagraph|S}}
-'''[[Chromatic aberration]]''' A type of lens error generating colored fringes.
+{{GlossaryParagraph|T}}
+{{GlossaryParagraph|U}}
-'''[[Contrast Blending]]''' A technique to blend several exposure bracketed images in one image
+{{GlossaryParagraph|V}}
+{{GlossaryParagraph|W}}
-'''[[Control points]]''' are used to identify matching features in adjacent images.
+{{GlossaryParagraph|X}}
+{{GlossaryParagraph|Y}}
-'''[[Cropped TIFF]]''' TIFF flavor where the image canvas includes a smaller image at an offset within the larger area.
+{{GlossaryParagraph|Z}}
-'''[[Cubic Projection]]''' A subcase of the [[Rectilinear Projection]] used as the input source projection for some fully spherical panorama viewers.
-'''[[Cylindrical panorama]]''' A panoramic image in [[Cylindrical Projection]]
-'''[[Cylindrical Projection]]'''  A projection capable of mapping 360 degrees horizontally by roughly 120 degrees vertically with acceptable distortion.
-== D ==
-'''[[Depth of Field]]''' The distance in front of and behind the focus distance where the image blur is not recognizable.
-'''[[DPI]]''' Dots Per Inch - Pixel density when printing images.
-'''[[DSLR spherical resolution]]''' What [[spherical]] panorama resolution can I obtain from a certain [[fisheyes|fisheye]]/camera combination.
-'''[[Dynamic range]]''' The ratio in brightness of the brightest highlight to the darkest shadow that are accurately captured in a scene.
-== E ==
-'''[[Entrance pupil]]''' The special point that you have to rotate your camera around, to avoid parallax errors.  Commonly referred to as the [[Nodal Point]] or better [[no-parallax point]], which see for more information.
-'''[[Equirectangular Projection]]''' A projection capable of mapping the entire sphere to a rectangle with 2:1 aspect ratio.
-'''[[EXIF]]''' Exchangeable Image File Format.  EXIF data allows camera, lens, exposure information, image description, copyright, etc. to be embedded in an image file.
-== F ==
-'''[[Field of View]]''' The angle in degrees that a projection covers.
-'''[[Fisheye Projection]]''' A projection where the distance from the centre of the image to a point is proportional to the equivalent spatial angle.
-'''[[FJPG]]''' is a [[JPEG]] flavor that supports display of high [[dynamic range]] images for [[PTViewer]] 3.x introduced by [[Helmut Dersch]].
-'''[[Focal Length]]''' the physical property of a lens which together with the sensor size determines the [[Field of View]]
-== G ==
-'''[[Gamma]]''' The relation between pixel values and visible brightness.
-'''[[GIF]]''' Graphics Interchange Format. An [[Image format]] introduced by compuserve.
-== H ==
-'''[[Halo]]''' Bright or dark areas along hard contrast edges introduced by certain image manipulations.
-'''[[HDR]]''' High [[dynamic range|Dynamic Range]]
-'''[[HDR compression]]''' The compression of the [[dynamic range|Dynamic Range]] in order to be displayed on a low dynamic range device like monitor or printer.
-'''[[Depth of Field#Hyperfocal_distance|Hyperfocal distance]]''' The distance on which you have to focus your lens if you want the [[Depth of Field]] to stretch to infinity.
-== I ==
-'''[[Interpolation]]''' A mathematical way to estimate a value in beetween two values. In image processing: The pixel color and brightness in between two pixels.
-== J ==
-'''[[JAR]]''' A file format for distributing [[Java]] software
-'''[[Java]]''' A programming language, program execution environment and executable program format
-'''[[JPEG]]''' Joint Photographic Experts Group widely used [[Image format]]
-== K ==
-== L ==
-'''[[Landscape]]''' Image orientation with the longer side in horizontal direction.
-'''[[Lens correction model]]''' A mathematical model that allows the correction of some [[Lens distortion|lens distortions]]
-'''[[Lens distortion]]''' A distortion produced by the lens itself which causes straight lines to be bent in some way.
-== M ==
-== N ==
-'''[[Nadir]]''' The point directly below
-'''[[No-parallax point]]''' Better name for 'Nodal Point' (see below).
-'''[[Nodal Point]]''' The special point that you have to rotate your camera around, to avoid [[parallax]] errors.  Also called "entrance pupil".  Click the term for more info.
-== O ==
-'''[[Object Movie]]''' "Inverted panorama" where you can move around an object.
-'''[[Optical axis]]''' The center longitudinal axis of an optical system.
-== P ==
-'''[[Panorama]]''' An image of a very wide or even surround scene or with a typical [[Aspect Ratio]]
-'''[[Parallax]]''' Foreground shift in two images shot from the same scene but from different points
-'''[[Philosphere]]''' A way to map a spherical panorama on the outside of an approximated sphere invented by [http://www.philohome.com/ Philo]
-'''[[Perspective distortion]]''' Image distortion caused by the fact that a 3-dimensional world is mapped to a 2-dimensional image.
-'''[[Pincushion distortion]]''' A [[lens distortion]] which causes straight lines outside the image center to be bent inwards (like a pincushion).
-'''[[Pitch]]''' Angle up-and-down (above and below horizon).  See also "[[Roll]]" and "[[Yaw]]".
-'''[[PNG]]''' Portable Network Graphics [[Image format]]
-'''[[Portrait]]''' Image orientation with the longer side in vertical direction.
-'''[[Projections]]''' Different possibilities to get a two-dimensional image of the three-dimensional world around us.
-'''[[PSD]]''' Photoshop Document format. A proprietary [[Image format]] used by Adobe [[Photoshop]]
-'''[[PTblender]]''' A command-line tool that implements just the colour and brightness correction
-functionality of [[PTmender]] (a replacement for [[PTStitcher]]).
-'''[[PTmender]]''' An Open Source replacement for [[Helmut Dersch]]'s [[PTStitcher]]
-'''[[PTOptimizer]]''' Panorama tools image position and correction parameters optimizer. Script driven.
-'''[[PTStitcher]]''' Main panorama tools stitcher application. Script driven.
-'''[[PTV]]''' PTViewer [[Image format]], supported by [[PTViewer]] version 2.8 from [[Fulvio Senore]]
-== Q ==
-'''[[Quicktime]]''' Apples multimedia technologie.
-'''[[QTVR]]''' '''QuickTime Virtual Reality''' A subset of the functionality of Apple [[Quicktime]]
-== R ==
-'''[[RAW]]''' A group of some hundred proprietary [[image format|image formats]] containg unprocessed sensor data from digital cameras.
-'''[[Rectilinear Projection]]'''  A projection in which every straight line in the world stays straight in the image.
-'''[[Reflection mapping]]''' Simulating a complex mirroring surface by means of a ([[spherical]]) panorama.
-'''[[Roll]]'''  Rotation angle around the lens axis.  See also "[[Pitch]]" and "[[Yaw]]".
-== S ==
-'''[[Spherical]]''' is a panorama  format that can contain the whole sphere around the viewer.
-'''[[DSLR spherical resolution|Spherical Resolution]]''' What resolution can I obtain from a certain fisheye/camera combination.
-== T ==
-'''[[TIFF]]''' Tagged Image File Format. A widely used [[Image format]] for storage and exchange of image files.
-'''[[Tone mapping]]''' Technique for reproducing the appearance of images having a higher [[dynamic range]] than the reproducing media (e.g. prints or standard monitors).
-== U ==
-== V ==
-'''[[Vignetting]]''' Light fall-off in the corners of images
-== W ==
-'''[[Wavy distortion]]''' A distortion produced by the lens itself which causes straight lines to be bent in waves.
-== X ==
-== Y ==
-'''[[Yaw]]'''  Panning angle, left-and-right.  See also "[[Pitch]]" and "[[Roll]]".
-== Z ==
-'''[[Zenith]]''' The point directly above.
-== 0 - 9 ==
-== others ==
-[[Category:Glossary]]

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