Selecting region of interest from a image box

[developer help]

Hai,
I use IMAQ1424 card & dalsa camera to acquire image, I programmed in LABVIEW to acquire the image and displayed in image indicator, now i want to select a particular area (Region of interest) from the image indicator using mouse, ie., selecting the region of interest by keeping the mouse at the starting point of my ROI & draging to the end point as we do in Photoshop,
i attached a pic. when i run the programe it will display 1024x1024 pixel image datas but the image is in the center i want to select only the image which is shown as a rectangel box how to do this.
is it possible pls help me

thank u
sasi

[JCC_(SK)]

Hi Sasi,

I created small VI, try it.
My solution have two problems:
1. Frst moses click must be top-left point and seconf must be bottom-right potin of subPicture.
2. After first click you do not see redraw rectangle of scratch.

Have a nice day.

JCC

P.S.: My VI is in LabVIEW 7.0

[chilly_charly]

Which LV version are you using ? Do you have the IMAQ vision package ?

There is a shipping example (in LV 7), named "Pen Attributes and Sub setting.vi" (in Examples>Pictures>Pictctl.llb), that explains how to draw and extract a ROI from a larger picture.

CC