FAQ

What do I have to prepare for remote support session?

Please check with the folloring list if you have everything ready for the remote session with Vioso expert.

1. Workstation

• your hardware configuration meets system requirements.

• your PC is connected to the Internet

2. Projectors

• number projectors according to your installation have to be ON and connected to the PC (or PCs)

• Projectors are installed, focused and display image.

• the have sufficient overlap (15-20%)

3. Camera

• all drivers are installed

• camera is checked and works (see here Camera)

6. Vioso Software

• download and install it from here: https://vioso.com/download/vioso6

• make sure the software is running without major issues like expired license, wron hardware, etc.

7. Run VIOSO Orbit Remote Access Software

• Download and run VIOSO Orbit, our software for secure remote access: https://vioso.info/orbit-win

8. Teams or telephone for live talk

• Microsoft Teams is our preferred option for live voice talk. It is better to have it on a separate PC (laptop/tablet/smartphone).

• Provide us with your e-mail address prior to the session, so that we can do the approvement in time

9. Prepare the setup

• In order to have a maximum productive session, please prepare as much as you can: dim the room light, start the projectors, align them on the screen, etc.

• If you have issues, please prepare the system to demonstrate the issues

• Content is king! Everything we do is depending on the final content, so make sure that the content is available (original, preview, etc.)

How to make best calibration conditions?

Before starting a camera based calibration consider following conditions for successful scanning:

• Reduce ambient light. The less ambient light you have the better scanning quality you will get. Turn of the light, close windows etc

• Adjust your camera properly. For more details and guidelines check the Vioso Calibrator manual.

• Camera and projectors must not be moved or shaked during the scanning process

• Avoid any interruption by external influences (person in front of the camera or between projector and surface)

• Check if your camera and projectors are focused (But don’t use auto-focus!)

• Provide sufficient projectors overlap.

How to deal with projector overlaps in black contents

Black level is something that can only be compensated and made “invisible” by raising the overall black level of all projectors to the level of the maximum overlap for the entire projection, which basically can be the sum of remaining light levels of 2, 3, or 4 overlapping projectors, depending on the setup. Of course, this reduces the overall contrast ratio of the content significantly.

While our software allows to adjust (raise) the black level of all regions that are NOT overlapped, it may not produce perfect results in totally dark environments since there will still be lighter and darker regions visible to the trained eye.

In this case — from practical experience — we recommend taking additional measures. You will get good results using some sort of mechanical shutter plates to soften the hard edges of the rectangular projector outputs a little, or by raising the environmental light level to get that up to the black level. Both actions will help to hide the hard edges of the projection fields.

From a psychological point of view, these rectangles are the most vivid and first characteristic mark that the human eye will “lock onto” to identify the overlap areas. Second, they will recognize the different black levels.

Does VIOSO 6 support NDI

Yes, NDI is available in VIOSO 6 for two purposes:

• Use NDI streamed camera images for calibration: NDI streams can be selected in the device selection for scanning projectors.

• Display NDI on calibrated outputs: See Integrated Videoplayer for more details

• Calibrate via NDI: if projectors are exposed as NDI stream, VIOSO 6 can utilize this steam and send calibration patterns via NDI. As this is a special configuration, please contact us for further information.

Does VIOSO 6 support Spout

No, Spout is not available in VIOSO 6, as there is little use for this technology within VIOSO 6's scope of work.

How to scan environments and objects for 3D mapping

This is a checklist to perform a scanning for objects and environments and transforming the data to a digital representation (3D objects and textures) that can be used for projection mapping.

Note:

Defining reference markers or features acting as reference is a cruial element of such 3D scanning and 3D object generation (phase 3)

Note: Verfying the scanned results in terms of geometric accuracy is crucial for generating and mapping content (phase 7)

Phase	Key actions	Notes
1. Pre-project planning	Clarify creative brief, resolution & frame-rate requirements Collect existing CAD/drawings & note façade materials (glass, stone, reliefs) Obtain permits, street closures, power & network access	Do this before ordering equipment or booking staff
2. Survey setup	Select capture method (static TLS, mobile LiDAR, Leica Disto & theodolite measuring) Establish local coordinate system & set ground-control/target markers visible from all scanner seats	A shared coordinate frame will later let the 3D model drop straight into mapping software
3. On-site scanning	Place/define reference markers on the scanned scenery Precisely measure reference markers using a theodolite Run overlapping scans (≥30 % overlap) from all useful vantage points Optional: Shoot high-res HDR photos from similar positions for texturing	Precise positioning of reference markers is essential and must be carried out with a high level of expertise
4. Immediate QA/QC	Register a quick draft on site to check coverage & point density Re-scan any shadowed or reflective zones	Saves costly re-mobilisation
5. Data management	Off-load raw data to two separate drives & cloud Log scanner serials, settings, station positions & operator notes	Adopt clear folder & file naming conventions
6. Point-cloud processing	Register/align all scans into one point-cloud Trim vegetation, cars & temporary objects Run noise/outlier filters	Limiting the visible region is good practice before meshing (doc.arcgis.com, autodesk.com)
7. Coordinate verification	Compare cloud distances with tape/total-station check shots Apply scale or axis corrections if needed	The validity and precision of the measurement, especially of the reference markers, must be checked with a high degree of accuracy and expertise. If there are discrepancies between the scan and reality, these errors can not be compensated at a later step and degrade the mapping quality
8. Mesh reconstruction	Generate a surface (Poisson, Delaunay, or library routine such as triangulatePointCloud) Fill holes, remove non-manifold edges, smooth where necessary Produce multiple LODs for pre-viz & on-site playback (meshlib.io)
9. Retopology & UV layout	Retopologise complex zones (arches, statues) for cleaner UVs Planar/box unwrap per façade panel; keep texel density consistent Create single-atlas or UDIM tiles; pack ≥ 90 % area
10. Texture creation	Project calibrated photos onto UVs or bake textures from mesh exporter Create a reference texture with outlines, highlighting features, etc. Make sure to include the reference markers in the reference texture
11. Projection-mapping prep	Export clean meshes in OBJ or FBX+ textures Build matte masks & alignment grids and feature outline grids based on the UV texture to share with the alignment software VIOSO 6 Test-project at night; iterate keystone & warping
12. Deliverables & archiving	Provide point cloud archive, final 3D model, textures, projection masks, and a short “survey -> model” report Back up to long-term storage