Anyone has experience with scanControl

[Thang Nguyen]

Hi,

I am working on a project which using scanControl to scan the  D surface of products to detect engraved serial number by laser. I have never used this laser sensor before. I have not had much successful to read back an image with clear. The result I got is hard to process. I think maybe I did not get the correct data I want. I wonder if there is someone familiar with communication interface with this device can share me the sequence of functions using to get an intensity image of 3D surface.

 

Thank you!

Thang Nguyen

[Minh Pham]

Is this device from MicroEpsilon? there is an instrument driver for it in LabVIEW i think:

 

The scanCONTROL LabVIEW instrument driver

supports the rapid integration of the profile sensors

in the National Instruments’ LabVIEW®

programming environment. Access to scan-

CONTROL sensors and their basic settings is

depicted in individual modules that can be directly

integrated in your own VIs using the software

functions. Example VIs also form part of

the integration process.

The integration of scanCONTROL sensors

in the LabVIEW programming environment

is based on the C/C++ library “LLT.dll” from

Micro-Epsilon. The extensive documentation

explains how its additional special sensor parameters

can be set up.

- Meets the National Instruments guidelines

for LabVIEW instrument drivers

- Supports LabVIEW 8.6 and higher

- Easy access to a range of functions via

function palette

- Support for the FireWire and Ethernet

interface

- Example VIs, inc. single profile transfer and

container mode

Software for scanner integration

The examples contained in the SDK also

demonstrate how the different interfaces (serial,

FireWire, and Ethernet) can be effectively

configured

 

http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=5&cad=rja&ved=0CEsQFjAE&url=http%3A%2F%2Fwww.micro-epsilon.com%2Fdownload%2Fproducts%2Fdat--scanCONTROL-software-integration--en.pdf&ei=Nno2UZazHuHvmAX11YHAAg&usg=AFQjCNGUXc10h4p2I7VsFP19CPCNXHuyoQ&sig2=RVnVDNb0hRZW09yJ6h7UFw

[Thang Nguyen]

Thanks anh Minh.

This is my first project working with laser scanner as well as ni vision. I had some issue with synchronize between controlling motor and capturing correct data. I start get hang with it now. 

[Thang Nguyen]

This is the data I got back from the scanControl. There are two arrays in this VI. One is distance data and one is intensity data. The object has a curve surface in the center so it white out in the middle. I am not sure what I should do next. Could you please give me some advises.

 

Thank you!

Thang Nguyen

ImageData.vi

[ShaunR]

oops. Deleted 'cos stupid

Edited March 8, 2013 by ShaunR

[Minh Pham]

What do you want to obtain from that image?

Please describe your requirements

[Thang Nguyen]

Oh, sorry. I need to recognize these characters. Do you know any good source to learn about LabVIEW vision?

 

Thanks!

[Minh Pham]

you can start with the Vision assistant, and please playing with the OCR stuff through there. When you are familiar with the all the features, you can start exporting/building LabVIEW code from the Vision Assistant

[Thang Nguyen]

anh Minh,

I have a problem with the white area on the top right of the character which make the algorithm cannot work correctly. That is created with the pump up of the surface of the device. It will go away if I scan along the length of the text but requirement is I have to be able to scan both ways, along the height of the text and along the length of the text. Do you have any experience with this?