Black output of assistant vision image

I use labview 8.6 and vision assistant 2009 to deal with the 640 * 480 RGB picture caputured by a qickcame of logitech. the problem is once the image through the express VI vision assistant the out put a 640 * 480 all black image! However controlled from inside the wizard of vision that each process will be just fine. so now I can't get the output image! How this can be solved?

When the first control this binary Palette has been selected for good Vision display (right-click of the mouse-> Palette-> binary)! Binary image appear black with shades of gray palette.

Secondly - (if you make sure that your images and the script are OK)-you can try to debug Vision Assistant Express VI.

Save a copy of your VI, and then click Express VI-> Fron open the right panel of the mouse, and then OK. Express VI will be converted to normal VI, go inside and debugging.

Andrey.

Tags: NI Hardware

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