Device Selection
Step 1: Select projectors
Project mode: projectors are selected in the Designer
In this section, you can see all of the displays that are made available by Windows.IWhen If all projectors are displayed in this way, continue by multi-selecting them all to participate in the calibration.
NVIDIA Mosaic or Display Expanders
Project mode: Display splitting is configured in the Designer
With a mosaic configuration or display expanders (such as Datapath FX4, Matrox Triplehead2Go, etc.), the aggregated display must be split back according to it's topology to expose each projector for calibration.
Click on "display split" next to the display selection area:
Set the split according to the topology that was used when setting up Mosaic or display expander:
Camera Scan Methods
The following calibration modes represent different mathematical models for interpreting projector scans. Their names indicate the configuration for which they are mainly intended:
Flat screen (fast scanning) Camera-based method for flat and slightly curved screens (Examples: projection screens, solid flat walls, ceiling, or floors). Extrapolation works linear. It's very robust and can deal to some extend with faceted and unsteady surfaces. It lacks extended extrapolation settings and cannot use masks for blending optimizaton in favour to a simplified usage.
Curved screen (fast scanning) Camera-based method for curved screens, spherical screens, and domes (Examples: Planetariums, event domes, cylindrical panoramas, 360 panoramas, truncated domes, semi-spheres, etc.). The extrapolation works on polynominals and provides a rich set of parameters and insight into the usage of the scanned result. It offers masks for tweaking the blends during scan time.
Any surface (slow scanning) Camera-based method for any uneven and complex surface. This requires an apparent image of the test patterns filmed by the camera. Scanning takes a long time and is intended for surfaces that are uneven, have facets, cracks and a generally non-smooth surface (examples: rock faces, uneven walls or buildings, textured and uneven surfaces). This method can not make use of blending masks and sophisticated extrapolation features. It is mandatory to view the entire projection surface, as this scanning method can not extrapolate beyond camera view.
Other methods
Manual Setup The calibration will be done manually without the help of the camera. It represents each projector by a manual warping grid and requires you make the warp and overlap manually. The softedge blending is created automatically.
Preceding calibration This mode is available as soon as a calibration was completed already. It re-uses the previous scans and lets you iterate through all parameters for doing any change on various parameters without executing a new scan. Please note that the camera must be availabe for this procedure to work, even if not used for a scan.
Step 2: Select Camera
Project mode: camera is selected in the Designer
Select the camera for this calibration from the dropdown. Cameras are recognized based on the DirectShow interface. Usually, cameras are connected via USB (webcams, etc.) or network, where the camera driver must provide a DirectShow interface.
It's also possible to use camera signals from video capturing devices (as long as they provide the video signal via DirectShow) and NDI streams.
It's optional to provide a name for this calibration. If not set, the calibration gets named "Compound XXX".
Note, that the compound name is not the name of the calibration file that is saved to disk.
Click "Next" to continue to the next step.
Step 3: Additional Options
Display/Projector arrangement
Select the arrangement of projectors to optimize the blending:
Grid/Arbitrary:
The projector alignment requires to blend on all edges of the projected images. The blend gradient is computed along an "S-curve" which is flexible but yields a slight risk for sub-par blend results.
Horizontal strip:
The projector alingment allow to have the blend zone only applied to the left and right side of each projector. This increases the blend quality.
Vertical strip:
Same consideration as for horizontal strip, but with the blend zones entirely apparent at the top/lower side of each projector image
Other settings
Set display calibration mask
Check this box to have masks on each projector applied during the scan. There will be a dedicated step in the calibration sequence where these masks can be created, edited or loaded froma previous operation.
Force new geometric scan
If checked, all projectors will undergo a new scan. Use this check box to avoid a pop-up asking how to perform a scan before each scan. It's recommended to check this box if you're doing a first calibration or want to scan every projector regardless of previous results.
Save to
Specify the name of the calibration file (*.sps) that is automatically created after the scan.
Extended options
This will trigger a popup with special settings for this scan. Do not alter these settings unless required by VIOSO support etc.
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