Attached Link: http://www.renderosity.com/viewed.ez?galleryid=432913

Hi, Another entry... Samuel

"Yes, Renderosity has my permission to use my artwork from my art gallery for promotional use only".

Attached Link: http://www.p-gallery.net/Space/nebula.htm

Hi, Some time ago I made nebula in Ultrafractal (see the attached link). This was before the apparition of fbm colorings, so I think it could be possible to do something more realistic now. Samuel

Hi, Alpha channel works exactly like the gradient, but instead of controling color, you control opacity. You can try the following experiment : - Take any two layer image. - Set an all black gradient for the bottom layer. - For the upper layer, set the merge mode to normal 100% and build a gradient with two control points, one red, the other one blue, for instance. - Open the alpha channel dialog, and set two control points at the same location where you set the ones in the gradient. - Now if you set to 0 the opacity of the alpha channel point that correspond to the blue point, the image should looks mainly red and black, and vice versae. Samuel

Attached Link: http://www.p-gallery.net

Hi, I completely agree with Tina. Renderosity is free. To avoid their harddisks exploding they had to put a daily limit and it's not very honest to try to avoid it. I think we should remove the possibility of uploading images. If someone has something to share, they always can upload as many images as they wish on a private website and give the url. And please, I'm not persecuting any of you. Post as much as you want, but on your site. Regards Samuel

Attached Link: http://www.p-gallery.net

Hi,

Most of the post processing process are scale dependent. Suppose I apply a mere "sharpen" filter. What it usually does for each pixel is to substract a fraction of the surrounding ones (at least I think). When doing this, the contrast is increased.
The trouble is that this process is scale dependent, ie the surrounding pixels at 640x480 won't be at the same place in a 64000x48000 render (there will be 100 pixels between them). So the sharpen mask WON'T act the same on images of different size. An if this effect will probably be hardly noticeable with a sharpen mask, it can be spectacular for other postprocessings.
What would be interesting would be to know if there is a way to avoid this, ie to be sure that your high resolution image will look the same that the one you post on a website.

This problem is imho a major downside of (heavy) post-processing.

Regards

Samuel

Here is a banner.

Samuel

The Paramathematical Gallery :
http://www.p-gallery.net