Help on Settings

settings

The FabliTec Scanner provides several settings to fine tune the behavior of the scanner. In the following, we explain the settings in more detail.

  1. Frame rate (default: 30fps). The scanner always records exactly 400 images from which it generates the 3D model. At a frame rate of 30 fps, the scanning thus takes 400 frames / 30 fps = 13.3 seconds. If you want to scan slower, you can reduce the frame rate to 15 fps (corresponding to a scanning time of 26.6 seconds). This is in particular useful when your computer is not fast enough to process the data at the full frame rate or when you use a turntable that rotates slower.
  2. Object size (default: 1m): This settings determines the edge length of the reconstruction cube. For example, a setting of 1m means that the 3D scanner will reconstruction a volume of 1m x 1m x 1m. We found that 1m is a good choice for scanning the upper body of a person. If you want to scan only the head, you can reduce the volume to 0.8m, 0.6m (upper body), or 0.4m (head). Alternatively, you can increase the volume size to larger values to scan a room or a larger object.
  3. Resolution (default: 256): This parameter specifies the number of voxels along each dimension. A setting of 256 implies 256 x 256 x 256 volume cells. The best model quality will be achieved in the highest setting (384). However, the memory requirements and computation time quickly increase with this setting. To compute the physical size of each voxel, divide the volume size by the resolution. For example, for 1m and 256, we obtain a voxel size of 1m/256 = 4mm, which means, that the smallest details visible in the 3D model have to be 4mm or larger.
  4. Model size (default: 10cm). This settings determines the size of the scanned 3D model when saved to disk. This setting scales down the model to the desired size. We recommend a size of 10cm for a figurine that you can put in the bookshelf.
  5. Turn detection (default: yes). By selecting this option, the 3D scanner will stop the reconstruction process after it has detected a rotation of 360 degrees. By using this option, it is sufficient to turn a little bit more than a full rotation during the data acquisition. Any images captured after the full rotation will be automatically discarded. If you want to perform hand-held scanning, we recommend to disable this option, as otherwise the reconstruction might stop too early.
  6. Add base (default: yes). The 3D scanner can automatically add a grey stand to the model. This might increase the stability of the printed figure, but is mostly a matter of taste.
  7. Make model hollow (default: yes). The 3D scanner can automatically make the 3D model hollow at a pre-defined wall thickness of 1mm. As a result, the 3D figure has less volume and therefore costs less money in print. Enable this option when you plan to print the models over 3D printing websites such as Shapeways.
  8. Remove small objects (default: yes). If there are loose components, this option allows automatically to remove them and to keep only the largest object in the scene. This is helpful to automatically remove unwanted noise. However, if you want to scan several (unconnected) objects, for example, two persons at the same time, please disable this option.
  9. Camera pose (default: horizontal). The FabliTec 3D scanner offers two pre-defined camera poses. In both cases, the camera is assumed to be located at eye height and roughly 1m away from the person to be scanned. In the horizontal setting, you can put the sensor on a box or on a computer screen. For the vertical setting, make sure that the projector (the red light) is pointing upwards. Furthermore, tilt the sensor slightly downwards (maybe 10 degrees) to get a full view of the person from the head to the hips. To help you with positioning, the 3D viewer gives you a preview of the chosen camera pose (if you have “camera trajectory” enabled).
  10. In any case, you can click on “Reset to defaults” to restore all settings to their original values.