track ROI from coordinates

[frog7]

Hi, I am working with Labview to track the movement of a point through a series of images. First, I used Vision Assistant to calibrate the image and match several patterns. Then I used batch processing and saved the pattern matching info to a file. Now I have a file with the location of a certain point throughout all my images. Now, I want to use either Labview or Vision Assistant to watch the tracking. I want each image to be shown with a point placed on the corresponding coordinate saved in the pattern matching data file. This way, I can visually check to be sure that the program is behaving correctly. Thank you!

[BruceAmmons]

In LabVIEW, use the overlay functions to add stuff to the images for display, such as circles or lines.  Once they all have overlays, you can display them however you want.

Bruce

[frog7]

But how can I overlay the point at a certain coordinate that I have stored in an external file?

[BruceAmmons]

You can create a bitmap and overlay it (handy for + symbol) or draw a circle.  If you use a bitmap, subtract half the size of the bitmap from your X,Y values so it is centered on the point.

If you don't understand overlays at all, look at some examples.

Bruce