Projected Light Patterns

Using Structured Light / Projected Light Patterns can drastically improve the quality of the reconstruction (especially for featureless or single coloured surfaces).

Use projectors or other light sources to produce patterns on your object of interest. Capture two images from each perspective. One with the pattern, one without for texturing. Use a tripod or camera rig, as both images need to be in the same position. Do not change / move the light pattern or the object of interest while capturing.

Place the two image sets in different folders and rename the image files so corresponding images have the same file name. Here are some sample datasets. The following example is based on 19 images of the "dog" dataset.

Import the images with the light patterns in Meshroom. Duplicate the PrepareDenseScene node and connect the output to the Texturing ImageFolder input. Set the image dataset without the light patterns in the new PrepareDenseScene node (Images Folders (+) ).

Now you can start the reconstruction. (The images with patterns will be used for the reconstruction. For texturing the images set in the PrepareDenseScene node (Images Folders) will be used.)

Example:

Without light pattern:

With light pattern: