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 Post subject: Earth/Ocean texture
PostPosted: Thu, 30-04-09, 17:58 GMT 
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Hello skips...
Doing a reworking of my old ocean earth texture... a pet project of mine and I know alot don't like it or even think it's a reasonable proposition.... however I've cracked on and this is it so far...

Image

the topo is based on the latest blue marble and is dds (16384x8192).

Still at wip stage.

Bob.


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PostPosted: Thu, 30-04-09, 19:01 GMT 
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Bob,

nice...but I am not sure what the main emphasis of your 16k texture is supposed to be? Are you interested in bathymetry? Like here, for example (water is still lacking, of course ;-) )

Image
Image
Image
Image


Image
Image

Fridger


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PostPosted: Thu, 30-04-09, 19:27 GMT 
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Well, as an ex cartographer I'm interested in all things geo-topographical. I like the bathy textures but I wanted to show off the beauty of the ocean areas (with water!). I got the image data from Nasa originally... well... I think it was from them... about 7 years ago!

I know there are valid arguments about 'you won't see this kind of detail from space' but I've seen some photos clearly showing currents and shallow water areas which are not depicted on the Blue Marble textures.

Anyways... it's what ever floats your boat really... just thought it makes a nice alternative to the default, as it's not vt.


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PostPosted: Thu, 30-04-09, 19:37 GMT 
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The 21k bathymetry imaging I was showing is from NASA, too, but quite recent. Clearly, it's easy to make the blue sea cover those bathymetry features to some extent, just as much as is desired...I left away the water to merely exhibit the topography of the underwater land...

Fridger


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 Post subject:
PostPosted: Thu, 30-04-09, 20:32 GMT 
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They look fantastic! I'd like to have a go at adding water over the top of them, much more accurate than my effort. Although I'm showing more of the movement of the water mass.

Anyways I'll get it finished prob this week sometime. If folks would like to try then great although it won't be everyone's cup of tea!

I've had to blend my original water mask to fit the new topo as my old one was slightly out, so I've had to go round the entire coastline by hand! I was three hours in the Philippines!

Consequently there is some 'ghosting' on some of the islands... I've still to check all the lakes.


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PostPosted: Thu, 30-04-09, 20:46 GMT 
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Do you have the URL for the 21k bathymetry data? Here it is:

http://mirrors.arsc.edu/nasa/topography ... 801.bin.gz

The file is binary format, however. So it takes my tools to work with them and to produce a nice 16k bathymetry normalmap that would cooperate nicely with the BMNG base texture.

The bathymetry normalmap is generated in one simple command. With my latest nmtools 2, the output could be directly in high-quality dxt5nm format or in PNG...

Fridger

PS: But if you prefer, there is also a 21k jpg version (of much worse quality than the original binary format, of course):

http://mirrors.arsc.edu/nasa/topography ... x10801.jpg

as well as a much smaller size for "practising":

http://mirrors.arsc.edu/nasa/topography ... 0x2700.jpg


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PostPosted: Thu, 30-04-09, 20:51 GMT 
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Fridger... thanks for that. I'll get go when I've time to explore your excellent ftex tools. In the meantime I'll press on... treat it as a purely aesthetic exercise.


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 Post subject:
PostPosted: Fri, 01-05-09, 15:22 GMT 
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Good Doctor...

Wow!
Now *that* offers realism. :wink:


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PostPosted: Fri, 01-05-09, 16:24 GMT 
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BobHegwood wrote:
Good Doctor...

Wow!
Now *that* offers realism. :wink:


Bob,

realism? Well not too much at this stage, at least ;-) . The lower two of my above bathymetry images, designate two "infamous" regions along the global "ring of fire", where many and most severe earthquakes tend to happen: Sumatra and Peru/Chile.

The shown respective bathymetry images from these areas involve 10 fold exaggerated elevations, to make responsible folds most apparent... Compare my last image with bh's above color image. Both refer to almost the same region.


Fridger


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 Post subject:
PostPosted: Sat, 02-05-09, 12:04 GMT 
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t00fri wrote:
Bob,

realism? Well not too much at this stage, at least ;-) .


What I meant was that you are in the process of detailing REAL features
on the Earth. And, from the looks of things they will be as accurate as
possible knowing you. :wink:

Thanks, Brain-Dead


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 Post subject:
PostPosted: Sat, 02-05-09, 12:40 GMT 
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BTW Bob... I'm making my ocean tex as cartographically accurate as I can... the 'as I can' is purely subjective of course!


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 Post subject:
PostPosted: Sun, 03-05-09, 0:06 GMT 
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bh wrote:
BTW Bob... I'm making my ocean tex as cartographically accurate as I can... the 'as I can' is purely subjective of course!


Well it is much appreciated here my friend. :wink:

Thanks very much for the effort here.

Take care, Brain-Dead


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 Post subject: Re: Earth/Ocean texture
PostPosted: Sun, 30-03-14, 11:15 GMT 
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That looks like a real photo! So beautiful! Glad to meet you here, I have ever read your posts on shatters.

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 Post subject: Re: Earth/Ocean texture
PostPosted: Sun, 30-03-14, 17:14 GMT 
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Celestial Phineas
if you are interested
the Topographic information in the very first image is from a small 16384x8192 pixel image .

there is a "up to date " 65536 x 32768 pixel topographic map
here:
viewtopic.php?f=9&t=616

that is ready to use for the Texture tools
http://www.celestialmatters.org/?q=node/10

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 Post subject: Re: Earth/Ocean texture
PostPosted: Fri, 04-04-14, 14:38 GMT 
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John Van Vliet wrote:
Celestial Phineas
if you are interested
the Topographic information in the very first image is from a small 16384x8192 pixel image .

there is a "up to date " 65536 x 32768 pixel topographic map
here:
viewtopic.php?f=9&t=616

that is ready to use for the Texture tools
http://www.celestialmatters.org/?q=node/10


Hi, Mr. John Van Vliet. Don't you remember me, that Hanghang, who wrote you several times? ;) Strangely enough, that name was not permitted to be used as my user name here... Anyway, I like being called either this or that name. ;)

Thank you for telling me about the map and the texture tools. Of course I'm very interested in this awesome earth map. But I'm still hesitating... Do these tools work function-properly on Windows 7...

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捫參歷井仰脅息。以手撫膺坐長嘆。


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