Rigsters Arago
Follow this page if you have a Rigsters Arago.
Firstly it is important to make sure you have created the relevant presets for exposure and light calibration.
Manual settings should be kept on at all times.
Marso works by measuring how light interacts with an object, so getting the lighting in your scene right will result in better results.
If you need any help setting up the Arago, you can see Rigsters documentation here.
Setting up your scene
Lighting
Keep the environment as dark as possible, or dark enough that the light source over-powers any ambient lighting.
Background
As the Arago rotates the object on the turntable, avoid having anything in the background that the photogrammetry application might detect as “features” that remain static during the scan.
We have simply used a black cloth attached to a wall.
Markers
Placing markers on both the base plate and the posts of the Arago improves 3D reconstruction. These markers provide clear reference points for your photogrammetry software, making it easier to detect features and establish scale.
Camera Coverage
Coverage is critical in the Marso workflow. Ensure the subject is framed consistently throughout the scan, and capture it from as many angles as possible - including top and bottom views - to achieve the best results.
If you want to see an example of what a great coverage is, click here.
Establish good framing
Ensure the object fits well within the frame - it shouldn’t appear too small, but it also shouldn’t be cropped. To achieve good framing, use the live view mode on the Arago to look through the camera, and rotate the pedestal to position the object correctly.
Place a sphere over the object
Create a sphere around your subject so it generally encloses the subject. If the sphere is too large, the Arago may struggle to keep it in frame; if it’s too small, parts of the object may be cropped.
Generate camera positions
Use the ‘Auto’ mode under the positions tab to generate camera views.
Low Camera Views - It is important to have a high number for the ‘Cut-off MAX angle’ to ensure the Arago can take photographs from below. Be aware there is a physical limit to how low the camera can capture before it collides with the pedestal.
Distance - Use the distance to set how far the cameras are placed from the surface of the sphere, aim to have the camera instanced at distance similar to the starting position when you established a good framing.
Experiment - It is best to play around with the other settings to get a feel for how they alter the way camera positions are instanced.
Check Focus & Settings - Be sure to double check the camera’s focus and settings before starting a capture sequence.
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