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Vue F.A.Q (Last Updated: 2024 Oct 26 8:50 am)





 


Subject: Help - Unwanted Artifacts Texture Node In Terrain Editor

jtmjtm2001 opened this issue on Aug 11, 2007 · 12 posts
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jtmjtm2001 ( ) posted Sat, 11 August 2007 at 7:32 PM · edited Fri, 15 November 2024 at 9:35 PM


I'm using noise node plus texture node blended together with blender node. The image I'm using as the map is 6000x6000 .tga I made in The Gimp. I tried using a filter after the texture node and eroding the heck out of it but no luck. What is going on and what can I do to ger rid of these lines? Thank you.

John Morris

eldritch48 ( ) posted Sat, 11 August 2007 at 8:16 PM

Might it be the texture?  Sorry, probably a stupid question, but hey ;)

Try a fractal node and see what that does....

jtmjtm2001 ( ) posted Sat, 11 August 2007 at 8:32 PM

I just tried the fractal and the lines are still there. John Morris

nruddock ( ) posted Sat, 11 August 2007 at 9:48 PM

How about posting screenshots of the terrain with just the texture and just the noise/fractal (same camera angle as the original).

jtmjtm2001 ( ) posted Sat, 11 August 2007 at 10:28 PM

file_385144.jpg

I just exited Vue with out saving out of  frustration. I was able to some what reproduce the shot though.

John Morris

Monsoon ( ) posted Sun, 12 August 2007 at 5:25 AM

Go into the function editor and on the image node, change the interpolation to bicubic instead of none and your lines should disappear.....

jtmjtm2001 ( ) posted Sun, 12 August 2007 at 2:03 PM

I'll give it a go. I have to go to work and will be back 11:00 PM Pacific and will let you the result. John Morris

Sethren ( ) posted Sun, 12 August 2007 at 6:31 PM

Yeah, more then likely that image import is 8bit so this is why the lines appear.

jtmjtm2001 ( ) posted Mon, 13 August 2007 at 2:42 AM

file_385266.jpg

The image import is 24bit converted to grey scale output. I tried bicubic and though the blacklines are gone, it appears to have a terracing effect that I can't get rid of after tons of erosions. John Morris

Monsoon ( ) posted Mon, 13 August 2007 at 5:38 AM

Somehow it's still seeing the pixels in the image...you say you're using Gimp? Is the grayscale output still 24 bit or did it revert to 8?  The other solution is........if it's not necessary to use a procedural terrain for your scene, then use a standard one. This doesn't happen with them.

jtmjtm2001 ( ) posted Mon, 13 August 2007 at 1:57 PM

file_385289.jpg

Works great! Thank you. John Morris

bruno021 ( ) posted Fri, 17 August 2007 at 2:43 AM

A 24 bit bmp file is actually an 8bit image. You need a 16bit greyscale in order to avoid artifacts.
The 24bit mentionned refer to the number of colours within the file, not the sampling resolution, which is 8bit for a jpg or bmp. tiff, psd and tga can be 16bit, but you can't convert 8bit images to 16bits.


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