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SKY-MAP.ORG / WIKISKY • View topic - DSS2 and image cut out features

DSS2 and image cut out features

In this section we will inform you about latest changes made on our site.

DSS2 and image cut out features

Postby admin » Tue Apr 15, 2008 9:42 am

We finally put DSS2 live - http://www.sky-map.org
The survey loaded now by default, but you have option to switch between surveys from drop down menu under "DSS" button.

We still working on new more clean DSS2 version. New version will include better color balancing, better tile edges handling, better faint objects view and more.

We also improved quality of image processing in general by implementing advanced pixel interpolation algorithms and configurable jpeg compression quality.

Here's the example of image cut out URL:
http://server5.sky-map.org/imgcut.jsp?survey=DSS2&img_id=all&angle=1.1&ra=20.77&de=30.65&x_shift=0&y_shift=0&width=1000&height=512&projection=tan&rotation=-95&reverse=0&interpolation=bicubic2&jpeg_quality=.95
Image

where:
survey - survey used, for now can be "DSS2", "ASTROPHOTO"
img_id - list of images separated by semicolon (useful for "ASTROPHOTO" survey)
angle - angle of vew by x axis in degrees
ra = Right ascension of projection center in hours
de - Declination of projection center in degrees
x_shift - image cut horizontal shift in pixels relative to projection center
y_shift - image cut vertical shift in pixels relative to projection center
angle
width and height - dimensions of output image
projection - output image projection ("tan" - tangent projection)
rotation - output view rotaion in degrees, rotation=0 - north is up, rotation=-90 - north is left
reverse - set to 1 for mirrored image
interpolation - pixel interpolation ("nearest", "avg", "bilinear", "bicubic" and "bicubic2")
jpeg_quality - quality of jpeg compression (0.25 - lowest quality, 1 - highest quality)

For asrtophoto survey use img_id parameter to choose image to show:
http://server9.sky-map.org/imgcut.jsp?survey=astrophoto&img_id=646&angle=1.1&ra=20.77&de=30.65&x_shift=0&y_shift=0&width=1000&height=512&projection=tan&rotation=-95&interpolation=bicubc2&jpeg_quality=.95
Image
You can combine multiple images there:
http://server9.sky-map.org/imgcut.jsp?img_id=646:128&angle=1.1&ra=20.77&de=30.65&x_shift=0&y_shift=0&width=1000&height=512&projection=tan&rotation=-95&interpolation=bicubc2&jpeg_quality=.95
Image
To remove outlined borders set img_border=0:
http://server9.sky-map.org/imgcut.jsp?img_id=646:128&angle=1.1&ra=20.77&de=30.65&x_shift=0&y_shift=0&width=1000&height=512&projection=tan&rotation=-95&interpolation=bicubc2&jpeg_quality=.95&img_border=0
Image

Image Ids in "img_id" parameter separated by semicolon (":"). First image in the list will be o top, last one on bottom.
admin
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Postby ian » Tue Apr 15, 2008 11:59 am

You've done a brilliant job so far. Keep up the excellent work :D
ian
 

Postby admin » Wed Apr 16, 2008 8:00 am

ian wrote:You've done a brilliant job so far. Keep up the excellent work :D


Thank you, Ian


SKY-MAP Team
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Site Admin
 
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Joined: Tue May 16, 2006 5:21 pm

Postby admin » Thu Apr 17, 2008 1:35 am

Few more features worth to mention:

1.
To put your image over DSS2 survey use following query:
http://server1.sky-map.org/imgcut.jsp?s ... orders=646
Image
Basically you need to set two parameters:
img_id=646:all
, where 646 is image id designated by sky-map when you match your image.
img_borders=646
include it if you want to outline the image

2.
You can cut DSS2 or any other image and match it with projection of your image.
Suppose you have this image:
Image

Then to produced matched cut out of DSS2 use following query:
http://server1.sky-map.org/imgcut.jsp?s ... uality=.95
Image
or set survey to "astrophoto" and img_id to any set of existing image to make cut out of other astrophoto images that cover same area:
http://server1.sky-map.org/imgcut.jsp?s ... uality=.95
Image
admin
Site Admin
 
Posts: 150
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Re: DSS2 and image cut out features

Postby andrea38 » Thu Jul 29, 2010 7:48 pm

Hello!
I like your work,
very amazing,
love it...............
Thanks...
andrea38
 
Posts: 2
Joined: Mon Jul 26, 2010 9:58 pm

Re: DSS2 and image cut out features

Postby Nicole34 » Fri Aug 20, 2010 1:19 am

You've done a brilliant job so far. Keep up the excellent work ...
Thank you for sharing....
Cheers and Best regards....
Nicole34
 
Posts: 1
Joined: Fri Aug 20, 2010 1:10 am

Re: DSS2 and image cut out features

Postby marryanne » Fri Sep 10, 2010 2:57 am

The main differences between DSS1 and DSS2 are DSI, TV-out and
The rest of the non standard features are exported via sysfs.
marryanne
 
Posts: 1
Joined: Fri Sep 10, 2010 2:51 am

Re: DSS2 and image cut out features

Postby Bahnyen » Tue Nov 09, 2010 5:26 am

Awesome, your team and you are very good.
This will be another step of world developer.
I do hope you will keep improve your tools and sharing to us in the long future.
Bahnyen
 
Posts: 4
Joined: Fri Nov 05, 2010 2:35 am

Re: DSS2 and image cut out features

Postby Sugar70 » Mon Dec 13, 2010 7:54 pm

You've done a brilliant job so far.
Keep up the excellent work ...
Thanks for the shared!
Sugar70
 
Posts: 1
Joined: Mon Dec 13, 2010 7:50 pm

Re: DSS2 and image cut out features

Postby genmei888 » Wed Dec 29, 2010 9:43 pm

This will be another step of world developer.Thanks!
genmei888
 
Posts: 2
Joined: Mon Dec 27, 2010 10:42 pm


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