Flying triangulation—an optical 3D sensor for the motion-robust acquisition of complex objects

Abstract

Three-dimensional (3D) shape acquisition is difficult if an all-around measurement of an object is desired or if a relative motion between object and sensor is unavoidable. An optical sensor principle is presented-we call it "flying triangulation"-that enables a motion-robust acquisition of 3D surface topography. It combines a simple handheld sensor with sophisticated registration algorithms. An easy acquisition of complex objects is possible-just by freely hand-guiding the sensor around the object. Real-time feedback of the sequential measurement results enables a comfortable handling for the user. No tracking is necessary. In contrast to most other eligible sensors, the presented sensor generates 3D data from each single camera image.

Differences in three-dimensional soft tissue changes after upper, lower, or both jaw orthognathic surgery in skeletal class III patients

“…3D facial scans were obtained using an Artec 3D scanner, which uses the flying triangulation method to capture a 3D surface. 11 The 3D surface was then processed further in Artec Studio software to obtain 3D scans of the subjects in STL format. Further analysis was conducted using the computer program RapidForm 2006 (INUS Technology Inc.).…”

GPU-Accelerated Time-of-Flight Super-Resolution for Image-Guided Surgery

“…In our ex-vivo experiments, we measured a porcine liver with a PMD CamCube 3.0 and a high-precision light-section sensor [8] simultaneously. The data acquired by the latter served as ground truth.…”

Flying triangulation - A motion-robust optical 3D sensor for the real-time shape acquisition of complex objects

“…In active triangulation, this is the speckle noise [11]. For more details about the optimization see [8].…”

“…The dental scanner [8] was developed in 2009. It is designed for the intra-oral measurement of human teeth, but is also able to measure similar objects in the mm-range like fingerprints or coarse wafer structures.…”

“…"Flying Triangulation" (FlyTri) is a principle that is able to fulfill all these points mentioned above [8]. In order to get a freely hand-guided and motion-robust 3D scanner, a single-shot method is chosen for the 3D data generation.…”