"Bill DeWitt" <the### [at] earthlinknet> wrote in message
news:3906f76f$1@news.povray.org...
| "Bob Hughes" <per### [at] aolcom?subject=PoV-News:> wrote in message
| news: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
| >
|
|     Why the sigh?
|
|     The thing about raytracing cartoons (for those who have never see
| Animaniacs) is that since realism with human figures just isn't here ("here"
| being the free raytracing crowd), and raytraced non-realistic figures don't
| usually look right, raytraced comics fills the gap. For some reason when the
| viewer sees the black line around the figure, all sorts of oddities can be
| easily accepted. Forgiveness just blossoms...
|
|     So having done that (gained artistic forgiveness), one can make animated
| figures that can be reused and reposed and developed into real animations in
| 3d environments with real stories...

Well okay, but I still think a scan-line renderer would be more appropriate  :-)

Bob

Post a reply to this message

Seems a little peculiar that the lines formed around shadows would be different.
It looks okay in a way but it almost breaks the overall look to it.  Same lines on
them
as everything else might not be right somehow either.  Maybe only lineless shadows?

Bob

"Chris Huff" <chr### [at] yahoocom> wrote in message
news: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/
|
|

Post a reply to this message

Bob Hughes wrote:

> Well okay, but I still think a scan-line renderer would be more appropriate  :-)

MS Paint seems appropriate.

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

Post a reply to this message

In article <chrishuff_99-26AA29.20413825042000@news.povray.org>, 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:

Wow! Are these extra post-processors going to be part of the MegaPOV?

Jerry

Post a reply to this message

Post a reply to this message

In article <jerry-E0257F.08332426042000@news.povray.org>, Jerry 
<jer### [at] acusdedu> wrote:

> Wow! Are these extra post-processors going to be part of the MegaPOV?

That is possible, it depends on Nathan...I will be uploading the source 
code, as soon as I finish a couple final touches.
Here is the current list of working post_process filters I have created:
clip_colors {COLOR}
    Clips the colors in the image so none of the components exceed the 
components in the given color.

invert
    Inverts the image.

find_edges (syntax still in development)
    The "cartoon-like" filter, finds the edges in the image and marks 
them a specified color.

blur_matrix (syntax still in development)
    Takes a matrix of values and applies it to each pixel in the image. 
Hard to explain, but useful for blurring in specific ways.

color_matrix < AA, AB, AC,
               BA, BB, BC,
               CA, CB, CC>
    Transforms the colors of the image with a 3*3 matrix.

-- 
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/

Post a reply to this message

On Tue, 25 Apr 2000 22:31:05 -0500, Chris Huff
<chr### [at] yahoocom> wrote:

>And here is the version including color edge detection:

This is looking pretty good. It might also pay to render the file with
a low color depth that used dithering to imitate a printing press's
halftoning? (This assumes you want a comic *book* appearance.)

Then again, how hard would it be to create an actual half-tone pattern
for an image?

Later,
Glen Berry

( Remove the "7" from 7no### [at] ezwvcom to email me. )

Post a reply to this message

Hey Chris,

This feature looks like it's got possibilities. If I gave you the code,
could you try doing this fella with your edging patch? I'd be interested to
see how it compares to the cumbersome process I used in Photoshop to make
the second image.

David

Post a reply to this message

Attachments:
Download 'blinky1.jpg' (27 KB) Download 'blinky2.jpg' (41 KB)

Preview of image 'blinky1.jpg'

Preview of image 'blinky2.jpg'

I would have to agree with Bob here, that I don't like lines around the
shadows. Leave it in, but allow us to control whether or not they have them.

Post a reply to this message

Post a reply to this message

Attachments:
Download 'find_edges2b.jpg' (1 KB) Download 'tree.jpg' (51 KB)

Preview of image 'tree.jpg'