Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!bagate!cbmvax!bj
From: bj@cbmvax.commodore.com (Brian Jackson)
Newsgroups: comp.sys.amiga
Subject: Re: The Amiga featured in Computer Chronicles
Message-ID: <15938@cbmvax.commodore.com>
Date: 18 Nov 90 07:43:40 GMT
References: <1990Nov17.150858.55@vax1.mankato.msus.edu> <yorkw.658894851@stable.ecn.purdue.edu>
Reply-To: bj@cbmvax.commodore.com (Brian Jackson)
Organization: Commodore, West Chester, PA
Lines: 44

In article <yorkw.658894851@stable.ecn.purdue.edu> yorkw@stable.ecn.purdue.edu (Willis F York) writes:
>
>One of the Hosts mentioned somthing about the program lacking a feature.
>
>it was about the Ink& paint Dept, You have to page through each frame
>and fill in the color whgere it should be, Ie a Blue Wing/Yellow Beak.
>
>The Host said Somthing like: " Seems like the program should automaticially
>fill in the correct areas with color without goint through each frame"
>(He said it REAL SNOOBY too) 
>
>I started thinking about this... It CAN'T do this.. And i doubt if it
>ever COULD be done. (IS my argument above clear?) 
>
>say ya have a Bird Flapping in the animation.
>
>Frame 1: The wings are down, ya fill in Blue. Tummy Yellow.
>Frame 2: Ya then have to fill in the wings again, Tummy again.
>(The Host wanted this to be done automaticially)
>(This is "impossible" the computer whoud have to KNOW What parts ARE wings.)

Not really. The ability to "know what is a wing and what is a beak"
requires some rudimentary edge detection and that the colored area not
change from frame to frame in increments large enough to cause the
program to lose the color in question at a given X/Y coordinate. In
other words, as long as the position of color block X in frame #2
still overlaps the position of color block X in frame #1, the program
can figure things out with relative ease. This is the basis for the
routines that are used to colorize B&W films.  Once you define a
new scene and and tell the program what blocks of the display are
what colors, it's really not hard to follow them from frame to frame.
The only problem comes with the "rabbit out of the hat" - something
crawls out from under the bed. The computer now says "huh?" :)

bj

>yorkw@ecn.purdue.edu  Willis F York    

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 | Brian Jackson  Software Engineer, Commodore-Amiga Inc.  GEnie: B.J. |
 | bj@cbmvax.cbm.commodore.com    or  ...{uunet|rutgers}!cbmvax!bj     |
 | "Caught in the vice of heaven and earth,                            |
 |   he turned his life into a cell"           Think Green.            |
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