Sorry - that one slipped out.  You know, I'm not sure that we're on the
right track here - some of those look like actual discontinuities.  I'm
wondering whether its quantification due to a limited bits-per-pixel.  that
would explain why filtering the result didn't fix it.

Greg

Gregory D Abram/Watson/[EMAIL PROTECTED]@opendx.watson.ibm.com on 12/15/2000
09:35:59 AM

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Subject:  Re: [opendx-users] Hybrid Grids




I think both Chris and Dave are saying the same thing:

Chris Pelkie <[EMAIL PROTECTED]>@opendx.watson.ibm.com on 12/15/2000
07:28:23 AM

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>Hi
>
>I'm new in OpenDX, and here is my first question:
>
>In the added file image.tiff are unexpected lines, look at the blue
>area.
>How can I make these lines disapear?
>They are exactly at the same position as the grid connections.
>
>Thank you in advance
>
>Tobias
>Attachment converted: Murph:image.jpg (JPEG/JVWR) (00006FB9)


I believe those could properly be called "Mach bands" which is a visual
phenomenon that shows up in gradients on occasion. Our eyes "overshoot" the
amount of gradient difference and it sums up to being less smooth, more
edgy than it is mathematically speaking.

You could run the image through a blur filter (Filter module) before
exporting it.

Chris Pelkie
Vice President/Scientific Visualization Producer
Conceptual Reality Presentations, Inc.
30 West Meadow Drive
Ithaca, NY 14850
[EMAIL PROTECTED]







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