IPB

Welcome Guest ( Log In | Register )

2 Pages V  < 1 2  
Reply to this topicStart new topic
Venus Map with Feature Names
JRehling
post Mar 20 2013, 05:30 PM
Post #16


Senior Member
****

Group: Members
Posts: 1514
Joined: 20-April 05
Member No.: 321



This is downright heroic, Machi. I'd like to think that a map like this could get someone thinking about the need to go back to this world, which looks wonderfully new in your work. Incredible.
Go to the top of the page
 
+Quote Post
machi
post Mar 21 2013, 01:07 PM
Post #17


Member
***

Group: Members
Posts: 557
Joined: 27-February 08
From: Heart of Europe
Member No.: 4057



Thanks!

Yes, I hope so too.
Venus or especially its surface is still not well understood and available data are not comparable to that, which we have for the Moon or Mars.
For example, Magellan's altimeter had pretty low resolution.
Every altimetric measurement covers area 100 to 1000 km2 large.
For comparison, Mars Global Surveyor MOLA's laser spot had size under 0.1 km2.


--------------------
Go to the top of the page
 
+Quote Post
Robotbeat
post Mar 25 2013, 04:32 PM
Post #18


Newbie
*

Group: Members
Posts: 6
Joined: 19-March 13
Member No.: 6897



Thanks so much! Incredibly professional, the best I've seen of any Venus map!

Do you have a source for the elevation data? Ideally I'm looking for something like a greyscale heightmap image (PNG or something), but I'm curious as to what your source was.
Go to the top of the page
 
+Quote Post
JohnVV
post Mar 25 2013, 05:08 PM
Post #19


Member
***

Group: Members
Posts: 398
Joined: 18-November 08
Member No.: 4489



QUOTE
Do you have a source for the elevation data? Ideally I'm looking for something like a greyscale heightmap image (PNG or something), but I'm curious as to what your source was.

i can post the data i used
in simple cylindrical projection
from 2048 x1024 up to 65536x32768 pixels in size
but it is 16 bit unsigned little endian

a 4096x2048 8 bit normalized ( 0 to 255 ) png


the remapped "browse" image
http://pds-geosciences.wustl.edu/mgn/mgn-v...002/gtdr/sinus/
Go to the top of the page
 
+Quote Post
Robotbeat
post Mar 26 2013, 12:53 AM
Post #20


Newbie
*

Group: Members
Posts: 6
Joined: 19-March 13
Member No.: 6897



Thank you! I plan on using it to make a 3d model (for printing out on Shapeways). If/when I finish it, I'll share it here.
Go to the top of the page
 
+Quote Post
JohnVV
post Mar 26 2013, 01:01 AM
Post #21


Member
***

Group: Members
Posts: 398
Joined: 18-November 08
Member No.: 4489



QUOTE
Thank you! I plan on using it to make a 3d model (for printing out on Shapeways). If/when I finish it, I'll share it here.

then you WILL need a 16 bit image to start with
there is a PDS ( .img) Blender 2.6 import tool that takes a PDS DEM and converts it to a sphere

or you can use say a perl script to convert the 2d x,y,z( px value) into 3d x,y,z
Go to the top of the page
 
+Quote Post
Robotbeat
post Mar 26 2013, 01:09 AM
Post #22


Newbie
*

Group: Members
Posts: 6
Joined: 19-March 13
Member No.: 6897



Thanks, but I think this will work for now. 256 levels isn't too bad for just a bumpy sphere (it will be tessellated anyway); it worked fine for Mars:
http://www.thingiverse.com/thing:26311

EDIT: For clarity, I didn't make that Mars object.
Go to the top of the page
 
+Quote Post
machi
post Mar 26 2013, 02:02 AM
Post #23


Member
***

Group: Members
Posts: 557
Joined: 27-February 08
From: Heart of Europe
Member No.: 4057



Robotbeat:
If you want elevation data as DEM, then I recommend you DEMs from MG_3003 dataset.
Or you can download shape file, which Mark Wieczorek did.


--------------------
Go to the top of the page
 
+Quote Post

2 Pages V  < 1 2
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 25th May 2013 - 08:04 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.