Digital Media · Photographics · Science · Technology

OrcaM is new kid on block for 3-D data capture

Call it automated photograph station, seven-camera system, 3-D model showcase, or digital reconstruction tool. OrcaM is being described as all these things. Whatever the tag, the “OrcaM” name stands for Orbital Camera System, according to its Germany-based developers NEK GmbH. A video demo was making the rounds of web gadget blogs and news sites this week as a camera system to watch.

The OrcaM system involves a large sphere, likened by one viewer as a giant maw, inside which one places the desired object for 3-D scanning. Once the object is placed inside, the sphere is sealed shut and the seven cameras and lights go to work. The cameras take simultaneous high-definition photos of the object at different angles. Serving to define the object’s geometry, various combinations of lights illuminate the object differently for every shot, capturing the finest details. After the photo processing, computer processing of the image creates the 3-D model. Observers say the end result is a highly impressive agreement of the real object.

This video demonstrates the OrcaM 3D reconstruction system, developed in the context of a project of the department Augmented Vision of DFKI (http://av.dfki.de)

For OrcaM Reconstruction Sequences (“Female Torso” Wilhelm Lembruck) see:
http://youtu.be/h320lM5DYlY

In this video it is shown how the hardware is opened to insert an object to be reconstructed. Currently the maximum size of objects is limited to 80cm diameter and a weight of approximately 100kg.
After closing the sphere again the acquisition process is fully automatic, though tuneable to account for complicated object geometries. Please note that the acquisition process has been extremely condensed and only drafts some steps necessary to acquire the respective information for a single camera position. I.e. horizontal and vertical fringe projection, directed illumination with light(patches), rotation of the carrier, etc. After the acquisition process the reconstruction of the object is computed fully automatic. A rendered result of the vase can be found at the end of the video. Note first that the rendering has been performed using a real world high-resolution HDR environment, which is reflecting in the vase and which introduces a pretty high amount of blue sky color to the rendering. Secondly note that the reconstructed vase is NOT symmetric, which is in perfect agreement with the original.

Text and Images Via Physorg