3D scanner Optical RevEng LE

3D scanner Optical RevEng LE Optical RevEng LE is a 3D optical scanner preset with one single acquisition range. This tool allows operations such as surface acquisition, automatic or shape based alignments and mesh generation: all in view of a wide utilization flexibility, simplicity and limited costs. Being a single acquisition range set, it allows to get surface portions of constant dimension, the size of the range is decided when purchased in order to obtain the best performances in relation to the destined use of the scanner. It caters to consumers who need to digitize uniform dimension objects in order to make maximum use of the precision offered by the tool. This solution allows the scanning of complex surfaces and of highly detailed small objects.

Technical features
Framed area	(mm)	60x48	150x120	200x160	250x200	300x240
Resolution	(px)	1280x1024
Acquisition time	(s)	less than 5
Dimensions	(mm)	430x160x85
Weight	(kg)	less than 4.5
Quota resolution	(µm)	10	15	20	25	30

Point clouds formation

Dummy with marckers The 3D scanning procedure quickly generates a dense point cloud which is the first digital representation of the object; the points composing the cloud belong to the scanned surface and they represent it volumetrically. Each acquisition generates a cloud containing just the portion of the object framed by the scanner that is, present in its acquisition range: by performing subsequent scans one can obtain all the parts of interest of the object.

Point clouds alignment

Just one acquisition cannot supply a representation of all the parts of the portion to be acquired: for this reason it is necessary to perform scans of different portions of the object and then align them in order to compose the total volume. Our automatic alignment technique uses position markers on the object surface as landmarks: during 3D scanning the software recognizes their position, it places them in correspondence with the same ones present in the previous scans and rototranslate the new scan in the right position. This technique makes the composition of the object shape automatic and extremely quick.

When the object typology is not suitable for the markers use, as in the case of artistic shapes, it is possible to use the alignment technique based on the shape: as the name itself indicates, this technique uses the richly detailed geometry of the object itself recognizing them in the different scans and then rototraslate the acquisitions. The richness in details clearly furthers the precision of this technique since it supplies the software with a greater number of recognizable points which will then be used for the re alignment calculation.

Polygonal model STL

Once the alignment is performed obtaining the volume of interest, the software we have developed is capable of calculating from the acquired point cloud a triangle mesh; the STL mesh is a common standard format which can be used directly in numerical control machinery or in rapid prototyping systems. It is also useful as starting datum for an analysis of the finished elements. The software supplied with the 3D scanner allows also the the editing of the meshes generated by using some simple tools that act on the object surface: smoothing, filling holes, extraction of sections, creation of fitting and symmetry planes and improvement of contours.