[[112:photogrammetry:softcopy:index#Orbit Softcopy Documentation|{{  orbit_desktop:return_overview.png|Return to Overview - Orbit Softcopy Documentation}}]]


====== Softcopy Stereo View Settings ======

{{photogrammetry:strabo:stereoviewsettins.png?nolink|}}

\\ **__Contrast Enhancement__**

This is a flag that sets the contrast enhancement on or off. The contrast enhancement will be applied continuously by using the [[112:photogrammetry:softcopy:project:projectwizard#Project Wizard - Step 3: image files|histogram information of the imagery]]. Keep in mind that this function is only available using the Standard Refresh method. Open the stereoviewer to adjust the contrast. 

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__**View Mode**__

Stereoscopic viewing is possible in three different ways depending on the available hardware. Select your viewing method in the Stereo View menu. \\ (Source figures: howstuffworks.com). 
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**1. Anaglyph Viewing**
{{photogrammetry:strabo:anaglyph_mode.png?nolink&350|}}\\
  * This is the easiest and cheapest way to view stereo. No special computer hardware is needed: a CRT or LCD screen (anglyph images can be projected using an overhead projector) and anglyph glasses (Red/Blue) satisfy. \\ \\ {{photogrammetry:strabo:anaglyphglasses.png?nolink&180|}} \\ \\ 
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\\ **2. Stereographics Viewing**
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  * Viewing with Stereographics hardware is also standard supported.{{  43:strabo:stereo:stereographics_view.gif?nolink&350|}} 
  * You need the following hardware:
    * Shutter glasses and emittor. 
    * A graphics card that supports OpenGL and quad buffering techniques.
    * A high performant CRT able supporting 120 Hz refresh rate. \\ \\ {{photogrammetry:strabo:activepolarizedglasses.png?nolink&150|}} \\ \\ 
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**3. Strabox Viewing**
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  * Viewing with the Strabox is standard supported {{  43:strabo:intro:strabox2.gif?nolink&350|}}
  * The 'Strabox Stereo Viewer' is a viewer that uses 2 LCD screens for creating the stereo image.
  * You need the following hardware:
    * The Strabox viewer.
    * Passive polarizing glasses.  
    * A graphics card that supports at least 3 monitors.
    * 3 extra USB connections (3D mouse (1); Strabox (2)) \\ \\ {{photogrammetry:strabo:polarizingglasses.png?nolink&170|}} \\ \\

\\ **(4. 3D Monitor)**
  * Strabo supports also the 3D monitors that are currently available on the market. 
  * It is necessary to install a graphics card that supports OpenGL in this case.
  * Please contact Orbit Geospatial Technologies for further information.

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\\ **__Buffer Mode__**

It is possible to refresh the imagery in two different ways.

**1. Standard Refresh** \\  
  * This refreshing method will refresh the imagery in a stereo viewer by reading image tiles that are equal to the size of the stereo viewer dialog pane.
  * When the stereo viewer is maximized, it can slow down the panning performance, because of the heavy image reading operations.
\\ **2. Tile Buffered Refresh**\\  
  * This method refreshes the stereo imagery using smaller image tiles, this way of viewing is interruptible by e.g. panning, zooming and editing functions. 
  * This is the best performing refreshing method, also when the stereo viewer window is maximized.

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