It is currently Sun, 20-08-17, 4:07 GMT

All times are UTC




Post new topic Reply to topic  [ 29 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: ceres
PostPosted: Fri, 06-03-15, 8:06 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
with the added asteroid in the spice section

just some fun

A "bump map"( 8 bit copy of the 32 bit image )
and a NormalMap from that using SFS on the dawn lowres map
Image Image Image

inpainted the poles so that the Shape from Shade tool would not have a edge in the bumpmap
the 1k images above ARE the largest

two short vids
the normal and a texture
http://youtu.be/OVMdi0UFEQE

JUST the normal map ONLY
http://youtu.be/pRcMd-AvbLE

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Sun, 15-03-15, 6:36 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
there is a shape file now in the PDS archive
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/misc/ceres/

two screenshots from the 512 mesh

Image Image
hipass of the baked dem ( 0 to 360 mapping)
Image

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Sun, 15-03-15, 8:38 GMT 
Offline

Joined: Thu, 21-08-14, 10:13 GMT
Posts: 8
John Van Vliet wrote:
there is a shape file now in the PDS archive
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/misc/ceres/

two screenshots from the 512 mesh

Image Image
hipass of the baked dem ( 0 to 360 mapping)
Image


How you import this data to Blender ?


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Sun, 15-03-15, 17:42 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
i will have to move this to a new thread but...

the archive say "ceres_opnav5_128.txt.gz"
first is a Gziped archive

on windows the FREE tool 7-zip will open it just fine
on Linux use your DEFAULT archive manager ( file-roller/ ark) for your desktop- the format is built in and is a DEFAULT format

ceres_opnav5_128.txt is well a text file
read the accompanying readme
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/m ... readme.txt

and "read the code"
the shape file is a "plate model"
( but one with a BUG !!! so read the code )

a plate is 99.9% a Wavefront .obj format

you can use libreoffice Calc ( excel) or the below python script
the vertex numbers need to be replaced with a " v "
the face/plate numbers need to be replaced with a " f "
Code:
#!/usr/bin/env python
#Purpose: To convert SIMPLE PDS Plate-Vertex to Alias WaveFront OBJ
# Trent Hare, April 2013

import sys, os
def Usage():
    print '''
    This script converts a SIMPLE shapemodel Plate-Vertex to Alias Wavefront OBJ
    Usage: %s <input.tab> <output.obj>
    '''%sys.argv[0]
   
if len(sys.argv) < 3:
    Usage()
    sys.exit(0)

#Create the output datasource
try:
    output = sys.argv[2]
except:
    Usage()
    sys.exit(1)

#Open the PDS tab file to read
try:
    input = sys.argv[1]
except:
    Usage()
    sys.exit(1)

infile = open(input, 'r')

#Create an empty file
outfile = open(output, 'w')

#Loop through the input
i = 0
for line in infile:
    if (i == 0):
        nVerts, nFaces = line.split()
        nVerts = int(nVerts)+1
        nFaces = int(nFaces)
        print line
    else:
        l1, l2, l3, l4 =  line.split()
        if i < int(nVerts):
            outfile.write('v ' + l2 + ' ' + l3 + ' ' + l4 + '\n')
        else:
            outfile.write('f ' + l2 + ' ' + l3 + ' ' + l4 + '\n')
    i = i + 1

print "Obj successfully created."


BUT
there is a minor BUG in the text file
the count for the FACES is NOT!!!!!! at the TOP of the file

It is at the START of the faces section
EXAMPLE for the 128

Code:
# --- the first TWO lines ---#

      99846   
           1  -0.35222320000000002E+03  -0.74438670000000002E+02   0.29003088000000002E+03
           2  -0.35092140999999998E+03  -0.69759749999999997E+02   0.29222390999999999E+03

# --- line number 99847  and 99848  and 99849 --- #

       99846  -0.77744889999999998E+02   0.40905569000000003E+03  -0.23088568000000001E+03
 196608
          1         1       131         2


the number of plates "196608" NEEDS to be in the correct place at the TOP
like this
Code:
      99846   196608
           1  -0.35222320000000002E+03  -0.74438670000000002E+02   0.29003088000000002E+03
           2  -0.35092140999999998E+03  -0.69759749999999997E+02   0.29222390999999999E+03
           3  -0.34960442000000000E+03  -0.65077200000000005E+02   0.29439953000000003E+03
           4  -0.34828456000000000E+03  -0.60394460000000002E+02   0.29657312999999999E+03
           5  -0.34698140999999998E+03  -0.55715919999999997E+02   0.29876533000000001E+03


then run the python script
Code:
./pdsVertexTAB2obj.py ceres_opnav5_128.txt ceres_opnav5_128.obj

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Sat, 21-03-15, 1:35 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
Emily Lakdawalla posted a story on the Planetary society
http://www.planetary.org/blogs/emily-la ... ceres.html

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Sun, 22-03-15, 5:36 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
i posted a 32 bit isis3 dem
https://drive.google.com/file/d/0B6ZYAd ... sp=sharing
in 0 to 360 long at 8ppd

this looks to be the default for images from the dawn team

Image

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Wed, 10-06-15, 13:55 GMT 
Offline

Joined: Fri, 09-03-12, 16:23 GMT
Posts: 24
Hi.
today's APOD shows NASA just released vistual video of Ceres, as could be seen by Dawn at 8400 and 3200 miles height:
http://apod.nasa.gov/apod/ap150610.html
It was obtained by the German Aerospace Center, using images and height data from Dawn, with terrain height digitally doubled.
Very interesting, let's hope to see the final (totally real) thing in a short time.
Bye
Goofy :)

_________________
ASUS G750JH- Intel i7 2.5 GHz-32 GB RAM-SSD 128 GB+SSD 256 GB-GeForce GTX 780M 2 GB


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Fri, 19-06-15, 20:26 GMT 
Offline
Site Admin
User avatar

Joined: Fri, 31-08-07, 7:01 GMT
Posts: 4474
Location: Hamburg, Germany
Goofy wrote:
Hi.
today's APOD shows NASA just released vistual video of Ceres, as could be seen by Dawn at 8400 and 3200 miles height:
http://apod.nasa.gov/apod/ap150610.html
It was obtained by the German Aerospace Center, using images and height data from Dawn, with terrain height digitally doubled.
Very interesting, let's hope to see the final (totally real) thing in a short time.
Bye
Goofy :)


This is indeed impressive. We should have that in celestia.Sci!

Fridger

_________________
Image


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Fri, 19-06-15, 21:17 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
as i recall from UMSF
that dem used in that rendering was about 2X height exaggeration

Quote:
let's hope to see the final (totally real) thing in a short time.

if the Vesta data is to go by

everyone missed the release
Bjorn Jonsson posted a link after randomly stumbling on it
http://dawndata.igpp.ucla.edu/
and the only Ceres images are the official released JPG's
http://dawndata.igpp.ucla.edu/tw.jsp?se ... esApproach

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Tue, 30-06-15, 10:27 GMT 
Offline

Joined: Fri, 09-03-12, 16:23 GMT
Posts: 24
Hi.
Another wonderful image by Dawn, showing a very tall mountain (about 5000 m) on an otherwise almost flat area. :shock:
[url]
http://apod.nasa.gov/apod/ap150630.html[/url]

Proportionally, on the Earth it would be about 65 Km high?
Huge!
Shame on Mount Olympus, hehehehe.
Bye.
Goofy :)

_________________
ASUS G750JH- Intel i7 2.5 GHz-32 GB RAM-SSD 128 GB+SSD 256 GB-GeForce GTX 780M 2 GB


Last edited by Goofy on Tue, 30-06-15, 14:50 GMT, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Tue, 30-06-15, 13:30 GMT 
Offline

Joined: Fri, 09-03-12, 16:23 GMT
Posts: 24
Hi.
This is the same image before and after some photoshopping and a little cropping to maintain it within 500KB.
The ultra-Everest is on top, click on the image to enlarge it.
Hope you like it.
Bye.

Goofy :)


Attachments:
CeresMountain_Dawn_1041.jpg
CeresMountain_Dawn_1041.jpg [ 417.8 KiB | Viewed 3812 times ]
CeresMountain_Dawn_1041-MOD.jpg
CeresMountain_Dawn_1041-MOD.jpg [ 451.04 KiB | Viewed 3815 times ]

_________________
ASUS G750JH- Intel i7 2.5 GHz-32 GB RAM-SSD 128 GB+SSD 256 GB-GeForce GTX 780M 2 GB
Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Wed, 01-07-15, 12:47 GMT 
Offline

Joined: Fri, 09-03-12, 16:23 GMT
Posts: 24
And about the misterious (ice, outgassing, ice plumes? :shock: ) Ceres bright spots, the first image shows the approximate position of the crater with bright spots "feature number 5", whose you can see my cropping- enhancement in the second image.
It is a still unnamed 90 km crater between Palo and Ebisu regions (if my reference is correct, I'm not so sure ).
Don't know if it's up to my faulting eyes, but in this image I see at least ten craters chains, angled about 135° (0° is UP, counting clockwise)
The last image shows a close-up with different orientation of the same 5 Km high mountain shown in my previous post, whose I have not found the approximate position, yet.
Enjoy.
Bye
Goofy :)


Attachments:
File comment: The red cross shows the approximate position of the crater
ceres-map-MOD-28.jpg
ceres-map-MOD-28.jpg [ 196.4 KiB | Viewed 3798 times ]
File comment: This group counts at least ten spots of various sizes
ceres-bright-spots-MOD-27.jpg
ceres-bright-spots-MOD-27.jpg [ 451.75 KiB | Viewed 3803 times ]
File comment: Tall mountain from a different view angle
ceres-tall mountain-MOD-25.jpg
ceres-tall mountain-MOD-25.jpg [ 317.3 KiB | Viewed 3803 times ]

_________________
ASUS G750JH- Intel i7 2.5 GHz-32 GB RAM-SSD 128 GB+SSD 256 GB-GeForce GTX 780M 2 GB
Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Sat, 12-09-15, 23:24 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
--- REPOST from UMSF
i few different views of
http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA19889
Image Image Image Image

the height is exaggerated

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Sun, 20-09-15, 19:50 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
"The Lonely Mountain " yes Ceres has one
a few renders from the Aug 25 "PIA19631" image
http://photojournal.jpl.nasa.gov/catalog/PIA19631

Image Image Image Image Image Image Image

the texture and mesh size is 2048 x 1024

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: ceres
PostPosted: Fri, 25-09-15, 4:09 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 758
Location: N 42.38846 W 83.45456
HAMO - 21 "PIA19899"

textured and mesh only
Image Image Image Image Image Image

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 29 posts ]  Go to page 1, 2  Next

All times are UTC


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group