Defining a Region of Interest on a Live Image

[Munson1027]

Hey all,
I am writing an application where I need the used to be able to draw a rectangular region of interest on a "constantly" updating (~5 frames per second) image.  Once they get the box into the region they want they will push a button to record the coordinates and size of the ROI. 

I am running 8.2 full, no vision package.  Any suggestions?

My first thought was to use cursors to define the corners of the box, but my end-user wanted something simpler...

Thanks all.
Matt

[MikeS81]

Hi Matt,

how do you get the image? Where do you show it?

Mike

[Munson1027]

Mike,

The image comes from a CCD camera, it is grabbed an turned into a 2-D array using subvi's provided in the manufacturers software developmen t kit.  I display it on the front panel in an intensity graph.

Matt

[MikeS81]

Hi Matt,
you can use the cursors or you use the "Mouse Move" Event to get the position and store it with a key press event into a shift register.

Hope it helps.
Mike


Message Edited by MikeS81 on 07-08-2008 09:04 PM