How do I change the contrast of Picture using LabVIEW7.1 PDS

[Ashutosh C]

Hi

Can anyone help me out for the following querry. I am using LabVIEW7.1 PDS

How do I change the contrast of Picture at runtime ?

Thanks

Ashutosh

[mfitzsimons]

Ashutosh C

What is PDS?  There are many ways to change the contrast.  If you have IMAQ Vision there are many tools available for changing contrast.  A picture is nothing more than an array of numbers so you could modify the actual pixel values.  For this I would use .BMP format because it is an uncompressed image.  As a last resort you could look into calling a Microsoft or other image processing product using an ActiveX control.  Give me some more information and I can make a specific suggestion.

Matt

[Ashutosh C]

Thanks Matt,

PDS - Professional Development System

Presently I do not have IMAQ Vision, The other option as you mentioned could be helpful to me.

Can you suggest / guide me for calling a Microsoft or other image processing product using an ActiveX control.

Wolud be thankful for reply.

Ashutosh C

[mfitzsimons]

Try this VI for adjusting contrast.  Just click on the color to get the right color to overlay to fix the image.

Matt

[Ashutosh C]

Thanks Matt,

The vi you send was very helpful to me.

Thank u once again

Regards

Ashutosh C

[mfitzsimons]

Ashutosh

If you like the VI please give the post a good rating.

Matt