Buffer extract for subtraction using IMAQdx or IEEE1394

[viswa]

Hi all,

              I want to implement extracting a particular buffer in IMAQdx as in IMAQ. I found that IMAQ palette has buffer configuration.vi and buffer extract extract. vi in low level vi sub palette.

I could not see the same feature in IMAQdx or in legacy IEEE1394 palette. I desperately need to implement subtraction for motion detection, is there any way to implement???

I am using LabVIEW 8.2 with IMAQdx 2.0.4 version. I have attached  the vi which was implemented for IMAQ for analog camera and was working properly for motion detection. 

I have also attached similarly implemented vi in IMAQdx for IEEE1394 digital camera and is not working properly.

Any help would be invaluable to me.

[viswa]

Just to simplitfy the problem, using IMAQ1394 get image.vi can i extract particular buffer???? 

Just have a look at the attached image.

Sorry for confusing with my complicated question in the previous post..

[Christian_Hartshorne_NIUK]

Hi Viswa,

Have you tried looking at the examples contained within the NI Example Finder which relate to IMAQ1394? These can be found at Hardware Input and Output » IMAQ1394 (or IMAQdx). This KB refers to an example which may illustrate how you can extract a particular buffer.

I hope this helps.

Best Regards,

Christian Hartshorne

NIUK

[viswa]

Hi Hartshorne,

                             I finally used IMAQdx get image.vi to extract a particular buffer instead of legacy IEEE1394 getimage.vi. Now it looks like i can do image processing.

Thank you for your help.