I need a ROI of FIXED Size

[sukhiray]

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@MarcoMauri wrote:

Hi!

Try this one.

I'm capturing the mouse click and creating on the fly a rectangular ROI of a given size.

Regards,

Marco

p.s. change the X and Y size of a ROI to a value different from 0... I forgot to update  the default value.

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Hi Marco,

Thanks a lot. It is working very well. I able to code with help of your reference vi attached in your post.
NOw I am facing another problem -

"Error -1074396154 occurred at IMAQ WritePNGFile

Possible reason(s):

IMAQ Vision:  The image is not large enough for the operation."

Even after cropping a 100X100 ROI I am getting this message from a IMAQ Write File 2 vi. It has been used to save the cropped ROI.
I am trying hard to fix it.
I shall be thankful if anyone can pu some light on it.

Thanks.

[Gregory]

Hi sukhiray, please attach your code which is generating the error. I tried to save mine for 2012, let's see if it works:

[sukhiray]

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@Gregory wrote:

Hi sukhiray, please attach your code which is generating the error. I tried to save mine for 2012, let's see if it works:

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Thanks gregoryj for your support. These are openable.

Now the previous problem has been solved. Presently I am getting trouble in saving the cropped ROI. See the attached code, The last vi to save image is returning error. I have attached the code and error snapshot.
I shall be thankful if you can help me to findout the problems or mistake in my codes.

Thanks again for your active participation.

[Hatef.fouladi]

I use another method with more flexibility test this vi too

[sukhiray]

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@Hatef wrote:

I use another method with more flexibility test this vi too

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Thanks Hatef.

It is also working good but it is adding fill color which is not required.
Till thank you very much for your support.

[Hatef.fouladi]

there is the control in vi that you can select three method for roi

frame

highlight

and fill

chnge fill to frame for not filling

[sukhiray]

HI all, Thanks for your support.
My code is runnign well with floating ROI of user defined size.
Now I am getting an odd problem with IMAQ readfile vi. Sometimes it is working really good but next day it is showing error like -

------------------------------------------------------------------

Error -1074395995 occurred at IMAQ ReadFile

Possible reason(s):           IMAQ Vision:  File not found.

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I am really confused. Can anyone help me to understand this?

[Hatef.fouladi]

vi please

[sukhiray]

VI can't be uploaded as it is part of a big program and extracting that part will includes a huge hazzard.

I have solved this problem by designing my own VI for the same.