On 2/19/2018 11:13 AM, Kenneth wrote:
> So, I finally coded-up my idea, and it does indeed put the 'center' color of the
> color_map across the center of the object. That part works, at least. But the
> color pattern's 'limits' on the object have a problem: the color spread doesn't
> extend all the way across. So far, after several days of trying to figure out
> why, I still don't have a clue. I tried changing *every* parameter in the code,
> but no luck-- although there's probably a hidden 'clue' in those trials.
> 
> So, I had to resort to some fudge-factors as well :-/  I eventually found one
> set of those that actually works consistently... so the overall scheme is
> workable after all. Only two 'fudging' values need changing, by eye; they depend
> on relative distance between object and camera, and on the scale of the object.
> I don't know if those values change linearly, exponentially, or what.
> Essentially, they increase the distance between the object's found  bounding-box
> coordinates, *as if* the object is larger. A clue?
> 
> The first image is the result of the initial code idea; the second is with the
> fix. The fudge factors indicate that the 'squashed' color_map values depend on
> some kind of so-far-unknown variable. There HAS to be an answer; I just haven't
> found it yet :-(
> 
> The camera and object positions are arbitrary, as is object scale, and can be
> anything... within reason ; there can be precision issues behind-the-scenes. See
> the #debug messages.

Awesome! Let us know when you figure out why the fudge factor is needed. 
If you flip over the disc you'll see that the second fudge factor is too 
small. You need to set it to + 1.65 instead of + 1.44.


Mike

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