Cousin Ricky <ric### [at] yahoocom> wrote:
> My idea was to bleed only light that exceeded the RGB dynamic range;
> that is, color in excess of rgb 1.  Colors within the dynamic range
> would remain un-smeared.  My first thought was to see if I could adapt
> Sam's luminous bloom rig for this purpose, but I haven't been able to
> figure out how he did it.
>
> I settled on mathematical manipulation of a pigment function.  The
> source image was rendered in the EXR format.  It was slow, but it got
> the job done.  This POC tries to get the look of iris diffraction.
>
> bleed_test_image2.jpg is a JPEG render of the source image.  As noted
> above, the actual source image was an EXR.
>
> bleed_poc1-excess2.jpg shows the colors in excess of rgb 1.
>
> bleed_poc3-power4.jpg shows the excess color smeared out into 4
> diffraction spikes.
>
> bleed_poc4-final4.jpg is the final combined image using 10 diffraction
> spikes.

I love it!

Post a reply to this message