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Tracks GETTING AND STICHING ORTHOPHOTOS (AIRPLANE PHOTOS). DANISH LANDSCAPE INFORMATION TUTORIAL PART DEUX

Discussion in 'Assetto Corsa Modding Discussions' started by DanTDBV, Jan 24, 2017.

  1. DanTDBV

    DanTDBV

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    How to get current and older Danish Orthophotos (Airplane photos).
    Bellahøj Park 2007.jpg
    Bellahøj 2007
    Current Danish Orthophotos is downloadable from here:
    http://download.kortforsyningen.dk/
    Bellahøj 2013
    Chunk.jpg

    The requirements for using the data, is to at someplace mention the name of the dataset, the download date and where it comes from.
    I use this:
    Copyright notice Padborg Park Ortho photo
    As required, according to this site: (In Danish)
    http://download.kortforsyningen.dk/content/vilk%C3%A5r-og-betingelser
    Contains data from Geodatastyrelsen
    Ekstracted lokation : Padborg Park
    Padborg Park orto
    DLD 24/1 2017 10km_2016_607_51_ECW_UTM32-ETRS89.zip
    DLD 24/1 2017 10km_2016_608_51_ECW_UTM32-ETRS89.zip
    http://download.kortforsyningen.dk/content/geodataprodukter
    Bellahøj Park orto DLD 24/1 2017
    http://servicelist.kortforsyningen.dk/show_sample.aspx?aptype=WMS&servicename=orto_foraar&layerselector=true&screenmode=newwin
    DLD = Download date
    DanTDBV D@nN (My photo and film signature)

    You need to register before you can download anything.
    Kortforsyningen LIDAR.jpg
    • In the Log ind box chose Opret ny bruger
    • Enter your information in the relevant boxes
    • You only need to check the top checkbox.
    • Click Opret ny bruger
    I cannot remember the rest of the registration proces, and I am not to keen on registering again.

    If in doubt post a screenshot and I will help you on.

    You do NOT! Need to log in, to browse around in the data.

    For current Ortho photos


    Click Gå til landkortdata link

    The different links sends you to a page, with a description you can copy to translate.

    Chose: GeoDanmark Ortofoto (blokinddelt)

    Kortforsyningen Orthophoto.jpg

    http://download.kortforsyningen.dk/content/geodanmark-ortofoto-blokinddelt

    The rest of the proces, is just like with the Pointcloud data from the first part.

    Then there is older ortho photos of Denmark.

    This takes some more work, as it involves Print screen and stitching in Photoshop, Gimp or whatever you use.

    Bellahøj Park 2009.jpg
    Bellahøj 2009
    The place to go is here:

    http://servicelist.kortforsyningen....o_foraar&layerselector=true&screenmode=newwin

    You basically zoom in, to the area that you want.

    The blue plus on the right side, opens a box where you can chose, the area, year and resolution, that you want to view. I usually start from the bottom and go up, to see what there is.

    Important! Make sure that dtk_skaermkort is ticked. This allows you to zoom in further.

    Kortforsyningen Orthophoto site1.jpg

    If you only get the map, then there is no data present, for the area that you are viewing.



    In this case I have looked at Bellahøj Park. There is photos from the following years:

    sjælland2007_10cm, sjælland2008_10cm, sjælland2009_10cm, sjælland2011_10cm, hrks_2012_10cm, hrks_2013_10cm, hrks_2014_10cm, hrks_2015_10cm, geodanmark2016_12_5cm (This is the same as orto foraar, until a new photo is added.)


    How do I get this? I cannot download?

    Here is where printscreen comes in.

    First you have to capture. Remember to have some overlap. Then you load the captures in Photoshop , Gimp or whatever you use, as layers and stitch them together.

    I will say here!

    Forget everything about using, automated panorama software for this.
    If you remember to keep, the right amount of overlap, it is much faster to do it manualy.

    A distinct feature about a carsize works beautyfully.

    Overlap.png

    The traditonal way, is to use printscreen, then paste and crop, in your favorite photoediting software.

    With Windows 8/8.1 you can skip one step by Windows key + Print Screen. Then you will save a screenshot, in your pictures folder. Don't know if this works in Win10. You will still need to crop the pictures though.

    What I am doing now is even easier. I have discovered Greenshot.
    With this I can capture pics, that are ready to stitch right away.
    You can get Greenshot here:
    http://getgreenshot.org/

    Setup Greenshot
    You can adjust fileformat, naming, placement and other things, before capturing.
    Png is a good choise, as it is lossless.

    I use the picture folder for the capture and then move them afterwards.
    Here I would use area, or track name for the topfolder and then year.
    If I cover a big area, I would take it in chunks and save each in a different folder.

    I would be adding pictures up or down, then move to the left, for the next chunk.

    I have set this up to capture a region with Crtl + Print Screen. Then leftclick and drag, when button is released, the picture is saved. Print Screen is set up, to capture the previous region.

    Go to full screen and close the blue box.

    If you have the possibility to Maximize to desktop, do so. More screenestate, bigger chunks to capture.

    I have trible screens and use Actual Windows Manager to change my videosettings for different uses. I think that Maximize to desktop is a Actual Windows Manager feature.

    Now it is time to capture.
    1. Start with a region
    2. Then move
    3. Capture previous region
    4. Repeat 2 and 3, until the wished for area is captured.

    Fire up your photoeditor and load pictures as layers.

    In Photoshop CC that is:
    File > Scripts > Load Files into Stack

    In Gimp 2.8.14 that is:
    File > Open as layer You can chose all the files in one go.

    To open layers palette in Gimp
    Windows > Dockable Dialogs > Layers

    You can also add it, as a Tab in another palette.
    Click the arrow, at the top of the palette > Add Tab > Layers



    Now it it time to stitch!

    I will mention the overall steps, but not go into detail here.

    I prefer to use Photoshop for this. Mostly because I can lock the movement and still work with the opacity. In Gimp I could still move the layer, even though it was locked.
    I could have done it wrong, but with Photoshop in reach, I didn't feel the need to experiment.

    Ohh, I spoke to soon.:redface:
    1. We need to resize the canvas
    2. Move the parts close, to their correct place on the canvas
    3. Check if all the parts needed are present. You could have missed a button press, these things happen
    4. Move the first part to the edge of the canvas
    5. Lock its movements.
    6. Reduce opacity to 50%
    7. Move the next part, until it lines up with the first part
    8. Set opacity to full on the first layer and lock it fully.
    9. Repeat until all parts are lined up.
    10. Export in an appropriate format
    Opacity

    Opacity.png
    Align
    Align.png

    You may find that some, of the parts does not line up. Do keep in mind, that the big picture is made up, by a lot of smaller ones.

    My solution for that, is to split it into 2 or more pieces, in unimportant places.
    Move the pieces to their own layer and line them up seperatly.

    Hope that this is usefull.

    Good luck with mapstitching.

    If you have any questions please ask and I will try my best to answer.

    Happy track building.
    Edit: spelling mistakes and picture descriptions
     
    Last edited: Jan 24, 2017