 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
thanks to Warp and his page, I got a nice thing to play with ...
I thougt about making the convergence or divergence of some points visible
...
the underground is a complete mandelset
above this there are some selected points, I recalculated, and showed the
movement while iteration ...
I didn't want to make an animation of it (quit long rendertime) and so i
placed a reflecting sphere in the upper left, to make the 3D-structure
visible ...
Not what I hoped to see, but I was just playing ...
Post a reply to this message
Attachments:
Download 'mandelbrot.jpg' (105 KB)
Preview of image 'mandelbrot.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Oh damn ...
I realised that I forgot to resize the img ...
I only applied the mosaic-filter to it, but forgot to scale it to 50% :-(
That's the reason for the blurry-look, and the quite high imagesize ...
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Why would you first mosaic it before resizing it? Isn't resampling enough?
cu!
--
ZK
http://www.povplace.be.tf
> Oh damn ...
> I realised that I forgot to resize the img ...
> I only applied the mosaic-filter to it, but forgot to scale it to 50% :-(
>
> That's the reason for the blurry-look, and the quite high imagesize ...
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> Why would you first mosaic it before resizing it? Isn't resampling
enough?
>
When I just resize the image, only every 2nd Pixel(in x and y) would be
taken in the resulting image ...
this would lead to aliasing-artifacts ... we would get our nice
stairsteps...
If you apply first a 2x2-Mosaic-Filter to the image the four pixels would be
averaged, and you can lessen the aliasing ...
You can prove that if you do the following:
Take one picture, and resize it to 50%
Then take another image, apply the mosaic and then resize the image.
Now create a difference-picture of the both ...
Probably you will see everything black now, but if you take the time, to
adjust the brightness/contrast you will see,that there are differences
(especially on sharp corners) between the pictures ...
First move the brightness until the black parts are at 49%White, then raise
the contrast ...
OK ... Maybe better programs like Photoshop (or photoshop-class-programs) to
this automatically, but I prefer to do this myself ... I don't simply trust
the smart-resize-option ...
OK ... so far ..
--
Jan Walzer <jan### [at] lzer net>
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Jan Walzer wrote:
> When I just resize the image, only every 2nd Pixel(in x and y) would be
> taken in the resulting image ...
> this would lead to aliasing-artifacts ... we would get our nice
> stairsteps...
Then whatever imaging program you have is quite lacking! Hope it's not PSP or
Photoshop.
--
David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Jan Walzer wrote:
> I thougt about making the convergence or divergence of some points
> visible ...
Something I mean to try someday:
Complex numbers can be expressed in a fairly natural way as colors: do a
stereographic projection from the complex plane onto a sphere, and embed
that sphere in the color cube.
My idea is an animation of the Mandelbrot iteration: frame N shows, as
color, the number to which each original pixel is mapped after N steps.
--
Anton Sherwood -- br0### [at] p0b0xcom -- http://ogre.nu/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> > When I just resize the image, only every 2nd Pixel(in x and y) would be
> > taken in the resulting image ...
> > this would lead to aliasing-artifacts ... we would get our nice
> > stairsteps...
>
> Then whatever imaging program you have is quite lacking! Hope it's not PSP
or
> Photoshop.
I said before: I simply don't trust the smart-resize-function of PSP....
It has also other resize modes, (quadratic,cubic) which only seem useful to
me when scaling the image >100% ...
Of course, I think Photoshop will do it right, but it's another class...
Hey: This discussion was NOT the intention of the picture ... ;-)
--
Jan Walzer
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> > I thougt about making the convergence or divergence of some points
> > visible ...
>
> Something I mean to try someday:
>
> Complex numbers can be expressed in a fairly natural way as colors: do a
> stereographic projection from the complex plane onto a sphere, and embed
> that sphere in the color cube.
What advantages do you hope to get from this ???
> My idea is an animation of the Mandelbrot iteration: frame N shows, as
> color, the number to which each original pixel is mapped after N steps.
Of course, I can't say that I really understood, what you want to make
visible...
how yould the image look like after that ???
--
Jan Walzer
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Hi Jan!
And I once wanted to write a program that would just do, what your image does. Showing
the
Iterations in the mandel. There always is someone who realizes your ideas bevore you
do. And he did
a good job. I had something like that in my mind, even if it was not intended - as you
said.
cukk
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Jan Walzer wrote:
> I said before: I simply don't trust the smart-resize-function of PSP....
> It has also other resize modes, (quadratic,cubic) which only seem useful to
> me when scaling the image >100% ...
>
> Of course, I think Photoshop will do it right, but it's another class...
oh, ok
I trust my program but that's me I guess
--
David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
