I agree with the thoughts presented here. Looking at a step beyond the data
capture, the modeling of the data poses the other side of the problem. And
its not a trivial one. From data reduction to fitting a surface thru large
number of data points in an "automated" manner are only some of the hurdles.
The issue of mathematically modeling mother nature brings up yet another
interesting topic - mother nature didnt intend to be modeled solely with
trimmed NURBS (Non Rational B Spline Surfaces), no matter what the degree,
no matter what the parametrization. It has taken a long time for the CAD
world to come to an agreement on NURBs as the underlying surface scheme but
there is more to it. As more and more complex objects are to be reverse
engineered should we be limited to do with network of (trimmed) NURB surface
patches or should we go the route of object oriented programming paradigm,
i.e. each surface type/patch (whatever) has a published interface and to put
together a set of surfaces one picks the right type of surfaces, stitching a
quilt, with the right continuity conditions, boundary constraints etc. Is it
possible mathematically ? Are there any solid modelers who publicly support
other type of surfaces other than NURBS. I know some have internal blending
pathces for specific uses. Dont get me wrong. I make a living off of NURBs.
But nevertheless I hope this stimulates some serious conversation aimed at
tomorrow.
> -----Original Message-----
> From: owner-rp-ml@ltk.hut.fi [mailto:owner-rp-ml@ltk.hut.fi] On Behalf
> Of Innomation Systems & Technologies Pte. Ltd.,
> Sent: Tuesday, November 17, 1998 1:41 AM
> To: rpmail
> Subject: just a thought : the new looks for Reverse Engineering...
>
>
> hi list,
>
> i had seen many emails passing through about scanners and digitising.
>
> very soon..i think that there will be a new mailing list for Reverse
> Engineering.
>
> but the things i will like to predict is that Reverse Engineering may be
> the master of Rapid Prototyping in the next couple of years.
>
> Mankind's creativity if bounded by the CAD/CAM limitations can
> never exceed
> to new boundaries. no matter how we design the models to be more
> streamline
> we can never defeat Mother's nature talents in design for beauty,
> efficiency and survival. hence, as we approach this limit....what we have
> created as new may just look similar to something that looks old.
>
> imagine if you just put ten people in an isolated town and let them marry
> among themselves and so do their offspring....what type of
> genetic features
> can be described as new??? ( by the way, it also means incest!!!)
>
> Reverse Engineering will also follow the evolution trend to be
> developed to
> a higher stage....from using touch probe to laser digitising...i believe
> the next phase of achievement will be the optical digitisers such as
> Steinbichler, EOIS, Hymarc(distinctively from conventional laser
> digitising) etc. to dominate the markets. look at how creatures
> had evolved
> from using feelers (such as tentacles or hands) to feel the
> surronding.....to the advance developed eyes for sight.....is not optical
> digitising be the next stage that will be the most salient and dominant
> systems to be adopted for use.
>
> just my thoughts!!!
>
> Sincerely,
> joseph sim
>
> Innomation Systems & Technologies Pte. Ltd.,
> 12, New Industrial Road, Thoren Technocentre
> #06-03 Singapore - 536202
> Republic of Singapore
> Tel : 065-3828685
> Fax : 065-3828658
>
> For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
>
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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