1. an idea: common question summary sheets
This newsgroup seems to periodically raise and discuss the same questions,
generating (usually) no new and useful information, but lots and lots of
postings - some giving algorithms, some trashing other people's algorithms,
some giving opinions, some trashing other people's opinions, and so on, all
in response to some question that has gone through the whole thing before.
I believe this will continue to occur as long as new people join the net
and try to solve the same common problems each of us has to answer. It CAN
be a good idea to post questions to the net if your own investigations lead
to no solution; there are some very sharp people on here. But too often
people ask questions that can be found in basic texts or common journals,
and that's where the problems with a flooded newsgroup begin.
I suggest we write a set of "Summary Sheets for Common Questions". We could
draft these things until they were rather complete. Probably lots of us
would like to have local copies for our own use to give to colleagues who
come for such information. And when someone on the net asks one of these
questions, someone will post the standard response. IF there is a significant
new point to be raised that is not properly addressed in the standard
response, be assured that someone will pipe up. But if the standard answer
covers the best answers and debunks common poor ones, net traffic
and misinformation might go 'way down.
I don't propose that these sheets should be tutorials. They should be
SHORT: mostly pointers, formulae, and literature references,, with terse
and consise discussion where appropriate. The question poser will probably
still have to do some independent work (probably in the local library);
these things will show the path.
Here are my proposals for starters, based on the last few weeks. We can
always write more standard sheets or update these when it seems appropriate.
Color conversions: RGB<->HSV, RGB->B/W, RGB->Lum
Image conversions: 24 bits RGB->8 bits colormapped, B/W->dither
Geometry: Point in polygon
Rendering: intro Z-buffer references, intro ray tracing references
Before tackling these I'd like to know if there's some reason this
procedure won't be a Good Thing. If you feel strongly about this one
way or the other, please let me know. If you'd like to volunteer to
help draft one of these documents, let me know that, too.
Then we can get down to the Real Stuff: like how to insert aliasing
artifacts into real photographs so our stuff doesn't look so much worse.
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