LabVIEW
image processing
Yes, but it won't be as good as a Canny edge detector: https://en.wikipedia.org/wiki/Canny_edge_detector
See: https://en.wikipedia.org/wiki/Kernel_(image_processing)#Edge_Handling
You'll need a [-1,-1,-1 ],[-1,8,-1 ],[-1,-1,-1 ] convolution matrix.
More generally: https://en.wikipedia.org/wiki/Edge_detection
Search LabVIEW like a graph! 
@khahmed77 wrote:
Hello i am trying to do the edge detection without the function IMAQ Edge Detection am asking if its possible just by the fonction IMAQ convolute please help
Bob, could be another homework assignment?
Not sure why you'd want to do this without the functions that are made to do it...
Hi khamed,
why do you need that when you should implement an algorithm without that function?
There are two options:
- You can look inside that IMAQ function by opening it's block diagram
- You cannot look inside this IMAQ function because the block diagram is protected/not available.
As I don't have IMAQ installed you need to check those 2 options on your own. Either NI allows you to look at the block diagram - or nobody (outside NI development team) is able to look at…
Why do you create all your threads with the same non-descriptive title?
@khahmed77 wrote:
hello
i need the block diagram of the IMAQ Edgedetection.
If it's not open, that's not possible (not allowed anyway).
It probably won't do you much good, it's almost certainly just a call to a dll function.
wiebe@CARYA wrote:
If it's not open, that's not possible (not allowed anyway).
It probably won't do you much good, it's almost certainly just a call to a dll function.
It certainly is. Back in LabVIEW 5.x days some of the Vision functions were implemented in LabVIEW G code such as the barcode decoding. They soon changed it to functions in the Vision DLL and and the VI was just a simple Call Library Node on the diagram.
The original G implementation wasn't exactly what I would call clean but they did work sort of and I even did some improvements on them for a project back then. But one big driving factor for NI to implement everything in the Vision DLL was also the fact that they used the Vision Toolkit core in LabWindows/CVI too. That move saved them having to maintain two different code implementations in parallel.
Nowadays just about every single vision function in the Vision Toolkit is really just a Call Library call into the vision DLL.
@rolfk wrote:
wiebe@CARYA wrote:It probably won't do you much good, it's almost certainly just a call to a dll function.
It certainly is.
Yep. Here is the Block Diagram of IMAQ EdgeDetection (LabVIEW 2018):IMAQ EdgeDetection
Bob Schor
