Interpolation

[Panjimar]

In Edge detection VI has the interpolation is mentioned. I want know the interpolation types and how it will work.If anybody knows please explain. 

[Hatef.fouladi]

which kind of edge detection you means?

based on their algorithm that most of them use averaging data you can get subpixel data for edge 

[udka · Accepted solution]

There are mainly three types of interpolation used in IMAQ Find Edge VI or any other edge vi.

- From VI help http://zone.ni.com/reference/en-XX/help/370281AA-01/imaqvision/imaq_find_edge/

Zero Order (0)	Rounds to the nearest integral edge location
Bilinear (1)	Uses bilinear interpolation to compute the edge location
Bilinear Fixed (4)	(Default) Uses the fixed-point computation of bilinear interpolation to determine the edge location

-Check the SubPixel Accuracy Topic for how the interpolation works in here http://zone.ni.com/reference/en-XX/help/372916T-01/nivisionconcepts/edge_detection_concepts/

-And this wiki on Bilinear interpolation can help https://en.wikipedia.org/wiki/Bilinear_interpolation#Application_in_image_processing