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From: Chris Huff
Subject: Another post_process: find_edges - find_edges.jpg (1/1)
Date: 25 Apr 2000 21:38:59
Message: <chrishuff_99-26AA29.20413825042000@news.povray.org>
This one was inspired by the "cartoon" post process, although it doesn't 
share any of that code.(Thanks to TonyB for getting me started on this!) 
It finds the edges using two methods: finding sharp differences in 
surface normal, and finding sharp differences in depth. It takes 3 
parameters: a threshold for each of the edge finding algorithms, and a 
line color. This is an example of the output of the filter:

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/


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find_edges.jpg


 

From: Peter Popov
Subject: Re: Another post_process: find_edges - find_edges.jpg (1/1)
Date: 25 Apr 2000 21:46:03
Message: <g7icgsot9he81dp9vd6aej4kacslm8olgf@4ax.com>
On Tue, 25 Apr 2000 20:41:38 -0500, Chris Huff
<chr### [at] yahoocom> wrote:

>This one was inspired by the "cartoon" post process, although it doesn't 
>share any of that code.(Thanks to TonyB for getting me started on this!) 
>It finds the edges using two methods: finding sharp differences in 
>surface normal, and finding sharp differences in depth. It takes 3 
>parameters: a threshold for each of the edge finding algorithms, and a 
>line color. This is an example of the output of the filter:

This one is dang *useful*!!! Thanks Chris!


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] usanet
TAG      e-mail : pet### [at] tagpovrayorg


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From: TonyB
Subject: Re: Another post_process: find_edges - find_edges.jpg (1/1)
Date: 25 Apr 2000 22:01:31
Message: <39064dfb@news.povray.org>
>This one was inspired by the "cartoon" post process, although it doesn't
>share any of that code.(Thanks to TonyB for getting me started on this!)

My pleasure. I am so happy... 'toons are here at last!   :_)

>This is an example of the output of the filter:

I think it needs just a little bit more work, but it looks great so far.
Keep it up, Chris! :)


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From: Chris Huff
Subject: Re: Another post_process: find_edges - find_edges.jpg (1/1)
Date: 25 Apr 2000 22:08:11
Message: <chrishuff_99-3216BC.21111025042000@news.povray.org>
In article <39064dfb@news.povray.org>, "TonyB" 
<ben### [at] panamac-comnet> wrote:

> My pleasure. I am so happy... 'toons are here at last!   :_)

:-)


> I think it needs just a little bit more work, but it looks great so far.

Could you be more specific about the parts that need work?
The one thing I see is the poor control of line thickness, I have a 
couple ideas for counteracting that, but I haven't tried any of them yet.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/


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From: Bob Hughes
Subject: Re: Another post_process: find_edges - find_edges.jpg (1/1)
Date: 25 Apr 2000 22:18:16
Message: <390651e8@news.povray.org>
There's something so perverse about such a thing as this,
none the less I suppose you're going to intrigue many people who've
been looking to ray trace cartoons.  sigh

Bob


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From: Ken
Subject: Re: Another post_process: find_edges - find_edges.jpg (1/1)
Date: 25 Apr 2000 22:32:22
Message: <390654C6.A47803B6@pacbell.net>
Bob Hughes wrote:
> 
> There's something so perverse about such a thing as this,
> none the less I suppose you're going to intrigue many people who've
> been looking to ray trace cartoons.  sigh
> 
> Bob

My sentiments exactly.

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: Chris Huff
Subject: find_edges take two - find_edges2.jpg (1/1)
Date: 25 Apr 2000 22:40:25
Message: <chrishuff_99-9E3127.21430225042000@news.povray.org>
Here is another demo image of this filter, a bunch of randomly placed 
cones, spheres, and boxes. Next, I am going to work on finding the edges 
between colors.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/


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find_edges2.jpg


 

From: Bob Hughes
Subject: Re: find_edges take two - find_edges2.jpg (1/1)
Date: 25 Apr 2000 22:56:48
Message: <39065af0@news.povray.org>
I'm beginning to feel compelled to draw a cartoon picture.
But seriously, this is fascinating stuff.

Bob


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From: Chris Huff
Subject: Re: find_edges take two - find_edges2.jpg (1/1) - find_edges2b.jpg (1/1)
Date: 25 Apr 2000 23:28:25
Message: <chrishuff_99-21B598.22310525042000@news.povray.org>
In article <chrishuff_99-9E3127.21430225042000@news.povray.org>, Chris 
Huff <chr### [at] yahoocom> wrote:

> Here is another demo image of this filter, a bunch of randomly placed 
> cones, spheres, and boxes. Next, I am going to work on finding the edges 
> between colors.

And here is the version including color edge detection:

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/


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Attachments:
Download 'find_edges2b.jpg' (31 KB)

Preview of image 'find_edges2b.jpg'
find_edges2b.jpg


 

From: Mr  Art
Subject: Re: find_edges take two - find_edges2.jpg (1/1) - find_edges2b.jpg (1/1)
Date: 26 Apr 2000 00:09:36
Message: <39066C1E.84AE671B@gci.net>
This is just too cool. Press on with the work.
I would love to see a tree rendered this way.

Chris Huff wrote:

> In article <chrishuff_99-9E3127.21430225042000@news.povray.org>, Chris
> Huff <chr### [at] yahoocom> wrote:
>
> > Here is another demo image of this filter, a bunch of randomly placed
> > cones, spheres, and boxes. Next, I am going to work on finding the edges
> > between colors.
>
> And here is the version including color edge detection:
>
> --
> Christopher James Huff - Personal e-mail: chr### [at] yahoocom
> TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
> Personal Web page: http://chrishuff.dhs.org/
> TAG Web page: http://tag.povray.org/
>
>  [Image]


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