problem displaying grayscale images

[David Vinson]

Hi all,

I'm using E-Prime 2.0 Pro to display some 8-bit grayscale images, and 
there are constant display artifacts where certain pixels appear white 
rather than their "correct" grayscale value, but the images are 
displayed fine otherwise.

These images are displayed at their original dimensions (ie no stretch), 
via a simple ImageDisplay object with a relatively long duration.

I've tried these on a few different machines and it happens reliably 
across different hardware, using different display resolutions, 
different timing etc. These artifacts are not apparent when previewing 
the images in other graphics packages, so it's not simply that my images 
have become corrupted.

It seems to be the same pixels every time, and there is sure to be a 
very simple explanation I'm somehow overlooking?  Anyone?

[Yes I realise this is a perfect query for E-Prime Support staff. But I 
bet I'll get a quicker answer this way].

Thanks!
-dv

-- 
David Vinson, Ph.D.
Senior Postdoctoral Researcher
Cognitive, Perceptual and Brain Sciences Research Department
University College London
26 Bedford Way, London WC1H 0AP
Tel +44 (0)20 7679 5311  (UCL internal ext. 25311)


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