Bob Hughes wrote:
> 
> Difference is right. A shift in the light even. At first I thought I was
> looking at a window then realized with help of those steps it wasn't.
> Otherwise I could have said "What a pale, washed out window there" :)
> Really though, there is no colorful intensity, what went wrong? Wait a
> minute, you aren't using 'transmit' too are you, instead of just
> 'filter' alone?

Hi Bob,

  Actually I lost a lot of the color I was getting when I increased the
intervals for the final image. At 5 intervals the colors were noticable
but the reduction of particle size associated with the high interval
rate lost some of it's ability to carry the light color with it. I used
a setting of 45 for this image to reduce the horrible blotchyness you
get at lower numbers. It may also have to due with my choosen media
reaction color setting in the media statement to some extent.

  The transmit function is not a good choice for this operation. You
want to filter the color of the light having the image map add it's
color to the light passing through it. Transmit passes the original
color of the light and not the color of the material it passes through.
Yes I relied upon filter and not transmit for the projected image and
color dependancy.

  Certainly there are areas for improvement and as I mentioned in my
original post this was a proof of concept image and not a work of
art. I think I proved the concept with this test and the rest is
mearly an exersize in optimizing the parameters to use and finding
the appropriate backgound to highlight the effect.

  In retrospect I wish I had placed the projection window close to a
corner and then had the opposing wall that made the other half of the
corner the surface that recieved the projected image. I am almost
positive the distance the light must travel has an impact on how well
the media interacts with the light source.

  Having said that it occurs to me that I may not have used a high
enough intensity level for the cylinder light used to carry the image
maps color through the medium. I had is set to rgb 5 which as I think
about it is somewhat on the low side for this process application.
Higher values would most likely have increased the color density seen
in my example and is certainly warrents further exploration.


Comments ?


-- 
Ken Tyler

mailto://tylereng@pacbell.net

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