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From: kim@amdahl.UUCP (Kim DeVaughn)
Newsgroups: net.micro.amiga,net.video,net.graphics,net.wanted,net.micro,net.tv
Subject: NTSC color filter for Digi-View
Message-ID: <3702@amdahl.UUCP>
Date: Tue, 16-Sep-86 16:53:03 EDT
Article-I.D.: amdahl.3702
Posted: Tue Sep 16 16:53:03 1986
Date-Received: Tue, 16-Sep-86 21:46:09 EDT
Organization: Amdahl Corporation,  Sunnyvale, CA 94086
Lines: 55
Keywords: NTSC Digi-View digitizer filter color
Xref: mnetor net.micro.amiga:4688 net.video:2213 net.graphics:1265 net.wanted:3865 net.micro:6061 net.tv:3087

[ ... go ahead, eat my bits ... ]

Recently, I purchased a Digi-View for my Amiga, and am now looking
for some kind of "box" that I can best describe as an "NTSC video
color filter".  I'm wondering if anyone on the net knows of such a
device.

For those of you who don't follow net.micro.amiga, the Digi-View is
a video digitizer that takes a standard 1 volt p-p NTSC signal as
it's input, and with the s/w provided, produces a data file of that
image that can be displayed, printed, etc. by the Amiga.

Normally, the NTSC signal is produced by a B&W TV camera.  For
color digitization, three seperate images are digitized thru red,
green, and blue filters, and then combined by the s/w to produce
a full color picture (320x200 pixels, 4096 colors).  The results are
really impressive ... especially considering the Digi-View is less
than $200 (without the camera).

What I would also like to do, is digitize images from my VCR (I have a
Cannon VR-HF600A, which has a "rock-solid" freeze-frame).  As is, this
works well in producing monochrome images (from either a B&W or color
source), but needs a "color filter box" between the VCR and the Digi-View
for color results.

Conceptually, this box would have red, green, and blue "color-killer"
switches on it so one could filter out two of the three colors at a
time.  The output of the box could be either the actual "red image"
(or green or blue), or the B&W representation of the same ... either
should work just fine based on my experiments.

Anyone have any ideas on where to find such an animal, or how one might
go about building one (I'm a h/w person, but know next to nothing about
video)?

I have looked at several of the "special effects" video processors that
are available.  Lots of nifty and interesting things can be done with
these, but so far, none do the kind of thing I've described above.  Any
help would be greatly appreciated.

Replies should probably be directed to net.micro.amiga where this
discussion really belongs, or of course you can email me, and I'll
summarize to the net.

Thanks alot!
/kim

-- 
UUCP:  {sun,decwrl,hplabs,ihnp4}!amdahl!kim
DDD:   408-746-8462
USPS:  Amdahl Corp.  M/S 249,  1250 E. Arques Av,  Sunnyvale, CA 94086
CIS:   76535,25

[  Any thoughts or opinions which may or may not have been expressed  ]
[  herein are my own.  They are not necessarily those of my employer. ]