Bad First Image on Vision Assistant using IEEE1394

[jeetz]

While acquiring images in Vision Assistant or Vision Acquisition in labview, the first image is always bad (see attached) and then I get good images. I am using IEEE 1394 camera MC-F433C. This issue arises with all the four cameras I've tried so the camera doesn't seem to be defective.

Please help

[muks]

Frankly I dont see the difference between the two images.

[BruceAmmons]

First explain what makes the first image bad, since it looks almost identical to the good image.

Do you have a camera that requires you to throw out the first image?  Some cameras never take a good first image, and there is a switch in MAX to compensate for that.  Something like "Ignore first image".

Bruce

[jeetz]

sorry! I didn't name them right, here's the bad image file.

[BlueCheese]

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@Bruce Ammons wrote:

Do you have a camera that requires you to throw out the first image?  Some cameras never take a good first image, and there is a switch in MAX to compensate for that.  Something like "Ignore first image".

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I apologize that it still exists and the documentation may still list it, but this feature actually has no effect in the IMAQdx driver. It was broken in earlier releases and any functionality it had was since removed. You would have to manually ignore the first frame in your code, or use a different camera that does not return a corrupt first frame.

Eric

[jeetz]

The properties menu of VISION ACQUISITION, there is a drop box: Acquisition Attributes and it has the option of Ignore First Frame. I have that set as TRUE but still same problem.

do i have to program it using IMAQ VIs?