Anyone has a canny edge detector vi that can be opened in Labview 7.0??

[aaz]

Hi,

Anyone has a canny edge detector vi that can be opened in Labview 7.0??

Thanks and many thanks.!

[VuD]

Hi aaz,

If you have NI Vision (for LabVIEW 7.0,  Vision 7.0, 7.1, and 8.0 are compatible) there is a canny edge detection VI that is available.  There is a screenshot of an example code using this function in this thread.  If you do not have Vision, you might be able to use some of the array/matrix designs along with the various built-in mathematic functions to develop an application based on the canny model.  Here is one of many online documents  that describe the canny procedure.  I hope this helps.

Vu

[aaz]

Hi,

Thanks for your reply.

I've seen your attachment on the Canny diagram, but i'm unable to open the vi as i'm using only LABVIEW 7.0. 😞

[VuD]

Hi aaz,

As I mentioned earlier, if you are using LabVIEW 7.0, you will need a version of Vision that is compatible (7.0, 7.1, or 8.0).  On the thread that I had linked previously, I posted a screenshot of the block diagram which you should be able to open.  If you are having problems finding the correct VIs in the Vision palette here are the names of the functions I used (in order):

IMAQ Create (2 of them)
IMAQ Read File
IMAQ ExtractSingleColorPlane
IMAQ CannyEdgeDetection
IMAQ Dispose
Simple Error Handler

I hope that helps.

Vu

[aaz]

Hi,

Thanks for your reply. I seearch for all the functions, but the only IMAQ functions that I found are create IMAQ and dispose IMAQ.

Can you please tell me where the other functions are?

Sorry to trouble you. I am very new to Robolab.

Thanks.

[VuD]

Hi aaz,

If you are using RoboLab I would suggest posting to the Lego Mindstorms Forums as they offer RoboLab support.  The screenshot I had posted was for LabVIEW using the Vision Development Module (VDM).  The VIs that you are missing are part of the NI-Vision software which comes packaged with VDM. Best of luck with your RoboLab application.

Vu