is there VI's available for image read/write file operation for image aquistion using imaq usb VI's?

[Brendan crowley]

I need to write to and read from a file, images acquired using imaq usb VI's, the imaq buffers VI's are not compatible with the usb VI's. I need to be ale to write a sequence of images to file and retreive them for analysis very quikly.

[SachaE]

Hi Brendan,
I'm attaching an example which will stream the images to an AVI file. This takes about 3ms per frame.
Hope that helps

Thanks
Sacha Emery
National Instruments (UK)

[hannah]

Hi Sacha,
I have used a similar VI to write image from IMAQ USB to avi file like yours, however it doesn't work with "incompatible image size" error, other guys suggested to use different size avi files and this does not work as well.
How does your test VI work?
thanks

[yaHeard]

Hi hannah,

Does the error message point to a specific VI, such as saying "incompatible image size occurred at AVI Write Frame" or give an error code?  One possible cause of this message is that the incoming images are changing size, which you can check by using the IMAQ GetImageSize VI.