Laser scanning and surface modeling
3D Laser Scanner is a device that scans 3D objects using laser rays. It scans numbers of faces of 3D object collecting data in computer software named Cydir. The collected data can then be used to construct digital, three dimensional models useful for a wide variety of applications. Various fields use this technology, like production of industrial design and prototyping documentation of cultural artifacts.
Firstly I made a 3D object with gray clay to get scan. It’s a solid object which is a statue shape. It is a compulsion to turn on the scanner M-15 before turn on the computer. The 3D object is placed on turntable with extra gray clay so that it will not move while scanning. After that we can open the software named Cydir.
- Open the file “d” > classes > IDPT2802009
- Give a new name : xyz then press enter
- Click create and select
- Click the white triangle and replace “???” with 1
- 1 – is the first set of scan and follows with 2/3/4 for other sets of scans
- Click scan
Then in the Guee window
- Click open to change the settings of width of 3D object.
- Number of scans chosen was 16
- Now it’s ready for scan: click on scan
- After single set of scan is done, press merge
Now go to CyPie window
- Click on “ALL” for option Void
- Now by selecting the unwanted parts of scanned 3D and remove after pressing space bar to accept.
- Click on “ALL” for option Despike
- Then click on Auto Align
- And click on merge
Go to CyDir Window
Now it’s ready for next set of scan. The same process is repeated for scanning. I did 2 sets of scan keeping it vertical and horizontal position.
After all scanning set is done, it is required to align and merge sets of scan. Then click on Guess option for guessing to merge or we can manually align the sets. Then clicked on Refine options and then click on Final.
Now, go to Edit Mesh option in CyDir window clicking on white right triangle and double click on hires.ply. Then type “h” “f” to hide file and “v” for void.
type “h” “u” to unhide fill
type “.” “e” to save everything
then press enter
now press “shift F”, to fill all holes and press enter
Again press “shiftF”, “c” for final cleaning and press enter again
Press shift G for smoothness
Process for converting to 3D file>
click on convert mess and click white right triangle on the CyDir window
then select the file name and click convert ( convert with .3ds extension)
Go to Mtool>
Click sort faces and click on triangle to final output and give the name choosing file type. Now finally click convert on the Mtool.
After converting the file into .3ds extension, it can be rendered mapping texture and with environment background. We can use different program to render the object. For this project, I used 3D studio max. Import .3ds file into max screen and map it with picture. The environment of different picture can be added to give background. The best view can be achieved using light and camera. The final picture can be saved as in jpeg format.
