Best way to save mutliple frame grayscale images

I am capturing data at 30 fps using an NI frame grabber. The images are all grayscale (monochrome camera). I've been testing saving them as AVIs, but it keeps converting them to RGB color images which I then have to cast back to 8 bit. Also, these files are HUGE (>1 GB for 30 sec) and not feasible at this size especially with the associated speed (or lack thereof) in accessing the frames.
What better options are there for storing my data? The application is being upgraded from a Mac which stored them as stacked tiffs.

All you should need to do is replace the old style image controls with the LV 7 version. Just use the error dialog to see which ones need to be replaced. Once you have replaced them all, everything should work fine.
Technically, this format could be read outside of LabVIEW, but it would take a little work. Each JPEG string is equivalent to a complete JPEG file (just as if you read the JPEG file as a string). You could easily write the strings to a file in a format that could be read by another program, such as each string length followed by the string. The difficulty would be decoding the string. You either need a JPEG string decoder, or you would have to write the string to a file and read it as a JPEG image. Another method would be
to just save each string in a separate JPEG file from LabVIEW.
Bruce
Bruce Ammons
Ammons Engineering

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[email protected]

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