The measurement of the object is done with non-contact methods such as structured( white and blue )light 3d scanning, laser 3d digitizing, X-ray type CT scanning, and 3D photogrammetry being the most common. The output of almost all 3d scanners is a grid or collection of points commonly called a point cloud. The number of these points can reach in the hundreds of millions. Each point has an x,y,z coordinate similar to a point measured on a CMM ( coordinate measuring machine). These points are then processed to remove redundant or overlapping points. The resulting 3D model is a triangular mesh and is usually stored in *.stl or *.obj formats. Based on requirements, the triangular mesh is then imported into specialized reverse engineering software, and converted into virtual 3D CAD models.
Type of parts:
A huge variety of objects can be reverse engineered, with size ranging from pin sized to ship sized objects. Simple or complex, dark or light, soft or hard, rough or fine, metal or plastic, almost any object can be measured with non contact scanning technology and the data transformed into 3D virtual models. Some of the common objects that we come across are dies and molds, plastic injection molded parts, sheet metal stamped parts, museum artifacts, handmade prototypes, assembly parts, cast and machined parts, sports equipment, aftermarket automotive parts, consumer objects, medical and aerospace equipment, construction materials, clay models ,antiquities, and much more.