The LLE Processing Core is embedded in the 1637 Coaxlink Quad 3D-LLE frame grabber. It can compute the depth map of a measured object with zero host CPU usage and zero latency.
It provides 3 algorithms for laser line extraction (Maximum Detection, Peak Detection, and Center of Gravity) as well as a pre-processing stage for filtering and thresholding.
Simplified block diagram of the LLE Processing Core
The LLE Processing Core is also capable to compute simultaneously up to 2 depth maps from a single input ROI. This feature is called Dual Laser Line Extraction (Dual-LLE). This feature is useful for applications using 2 laser lines projected on the same object.
Simplified dual laser triangulation system
When the Dual-LLE mode is activated, the LLE Processing Core input split the input ROI into two sub-ROIs, called LLE-ROI. Each LLE-ROI is independently processed by the LLE Processing Core resulting in a corresponding depth-map.