I would like to view the satellite image from Dundeee satellite station with Center of image located at 057.0E and 00 N. I would like to get it referenced so that I can overlay other layers. It has tick marks Can anyone please help to do it without havng to put control points every time?

Thanks in advance

Bhat

Attachments:
2009_7_5_1800_MET7_2_S2_grid.jpeg

Have you seen

http://www.eumetsat.int/Home/Main/Access_to_Data/index.htm?l=en

Dream no small dreams for they have no power to change the minds of men. - After Johann Wolfgang von Goethe

I tried but could not find the required projection parameters, Can anyone help?

The projection is Orthographic. Choose central latitude = 0 and pick a longitude with a ruler and a mirror. I am confident those white crosses in the middle will be accurate enough if you can pick any point on a known map, or one with a graticule. The image is from a geostationary satellite 30K km away - the view doesn't change and there's a large margin of error.

Read the diatribe in the Manifold help manual about Orthographic - this one's a sitter for why they chose the default.

Medeski, Martin & Wood

You'll also need to calculate the position of the bottom left corner pixel and its size in the coordinate system of the image - it's not hard, but I don't have access to Manifold at the moment. I can have a go on Sunday. I've been using long time series of downloaded images just like this one, and the georeferencing was very easy.

Medeski, Martin & Wood

I am still struggling. Please see if you can do it when you have access to Manifold and send me a map. Thanks in advance

Follow the steps given here to georeference the image:

http://www.manifold.net/doc/georegistering_an_image_to_a_drawing.htm

You need to georegister/reproject your image to Orthographic projection with a centre longitude - latitude of 0.00N, 57.00E The drawing used in the above procedure should be reprojected to the same.

Once you have georegistered the image and reprojected with an appropriate transform* that does not clip the image to a convex hull. When you import another image collected by the same satellite from the same position, use Assign Projection and load the projection parameters of the previously georegistered image. Now, providing you accurately georegistered the first image, the second image should be georegistered also.

* I tested the procedure described and used the default transform (Affine) having previously picked 9 GCPs.

I have attached the xml with the projection information for your image. You should perform the procedure yourself first though.

I think you are find ing this difficult because you are looking for complications where there are none. ;-)

Attachments:
2009_7_5_1800_MET7_2_S2_grid Projection.xml

Dream no small dreams for they have no power to change the minds of men. - After Johann Wolfgang von Goethe

gkbhat,

Sorry, i should have been more explicit. The reason i directed you to the EUMetSat URL is that until recently they were providing a service to download selected meteorological satellite image products. However they appear to have reorganised the website and i cant find the link to the service now - i expect it is still there though. I would have hoped that the imagery they provided would have been georegistered.

Dream no small dreams for they have no power to change the minds of men. - After Johann Wolfgang von Goethe

gkbhat... this is the "Forum" section of the online community, for discussing the forum itself. Please post topics like this in the "General" section. You'll get more people reading and responding as well.