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    <p>The basic problem is that both CC BY and CC BY-SA are very
      restrictive licences, particularly the 4.0 variants. As a result
      if tracing from so licensed sources was found to create a
      derivative (in CC parlance an "adapted work"), the results could
      be unusable for OSM purposes. <br>
    </p>
    <p>Skipping the longish discussion of the large differences in
      copyright protection for images between different jurisdictions
      (for example between where I'm sitting now and 40 km north of
      here), that is the reason why the LWG suggests getting an explicit
      release for imagery (see
      <a class="moz-txt-link-freetext" href="https://drive.google.com/file/d/0B3PN5zfbzThqLXg1TUlxalAtVE0/view">https://drive.google.com/file/d/0B3PN5zfbzThqLXg1TUlxalAtVE0/view</a>).
      <br>
    </p>
    In my experience our use case used to be considered slightly odd and
    it was relatively easy to obtain permission, these days (with the
    dawn of ML) I'm not quite that optimistic any more.<br>
    <br>
    Simon<br>
    <br>
    <div class="moz-cite-prefix">Am 15.01.2018 um 19:57 schrieb Rob
      Nickerson:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAK4yQTndMODce_3EkUNpgsAsJNAnx=Ph7+h_JVaXg3jN5BthaA@mail.gmail.com">
      <div dir="auto">I missed a crucial word: "data".
        <div dir="auto"><br>
        </div>
        <div dir="auto"><span
            style="color:rgb(128,0,128);font-family:sans-serif;font-size:12.8px">Isn't
            cc-by-sa imagery ok (with cc-by-sa DATA being the problem)?</span><br>
        </div>
        <div dir="auto"><span
            style="color:rgb(128,0,128);font-family:sans-serif;font-size:12.8px"><br>
          </span></div>
        <div dir="auto"><span
            style="color:rgb(128,0,128);font-family:sans-serif;font-size:12.8px">Thanks,</span></div>
        <div dir="auto"><span
            style="color:rgb(128,0,128);font-family:sans-serif;font-size:12.8px">Rob</span></div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On 15 Jan 2018 12:46 p.m., "Rob
          Nickerson" <<a href="mailto:rob.j.nickerson@gmail.com"
            moz-do-not-send="true">rob.j.nickerson@gmail.com</a>>
          wrote:<br type="attribution">
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="auto">John provided a link on how to access the
              images under Cc by sa. You have to go through a few steps.
              Have you tried and had no success?
              <div dir="auto"><br>
              </div>
              <div dir="auto">Isn't cc-by-sa imagery ok (with cc-by-sa
                being the problem)?</div>
              <div dir="auto"><br>
              </div>
              <div dir="auto">Either way, thanks John for bringing this
                forward :-)</div>
              <div dir="auto"><br>
              </div>
              <div dir="auto">Best,</div>
              <div dir="auto">Rob</div>
            </div>
            <div class="gmail_extra"><br>
              <div class="gmail_quote">On 15 Jan 2018 10:54 a.m.,
                "Christoph Hormann" <<a
                  href="mailto:chris_hormann@gmx.de" target="_blank"
                  moz-do-not-send="true">chris_hormann@gmx.de</a>>
                wrote:<br type="attribution">
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">On
                  Monday 15 January 2018, John Gilmore wrote:<br>
                  ><br>
                  > Planet Labs has already released all their
                  California satellite<br>
                  > imagery under a CC-BY-SA license [...]<br>
                  <br>
                  Actually no - while they have claimed to have done
                  this there is no<br>
                  imagery actually available under such a license (if
                  there was you would<br>
                  be able to provide a link to the images - wouldn't
                  you?) - a clear case<br>
                  of openwashing.<br>
                  <br>
                  Besides that everyone should know that Planet Labs is
                  a persistent OSM<br>
                  license violator:<br>
                  <br>
                  <a href="https://www.planet.com/gallery/"
                    rel="noreferrer" target="_blank"
                    moz-do-not-send="true">https://www.planet.com/gallery<wbr>/</a><br>
                  <a href="https://www.planet.com/explorer/"
                    rel="noreferrer" target="_blank"
                    moz-do-not-send="true">https://www.planet.com/explore<wbr>r/</a><br>
                  <a
                    href="https://wiki.openstreetmap.org/wiki/Lacking_proper_attribution"
                    rel="noreferrer" target="_blank"
                    moz-do-not-send="true">https://wiki.openstreetmap.org<wbr>/wiki/Lacking_proper_attributi<wbr>on</a><br>
                  <br>
                  so any kind of cooperation between the OSMF and them
                  is - in light of<br>
                  this context - likely out of the question.<br>
                  <br>
                  --<br>
                  Christoph Hormann<br>
                  <a href="http://www.imagico.de/" rel="noreferrer"
                    target="_blank" moz-do-not-send="true">http://www.imagico.de/</a><br>
                  <br>
                  ______________________________<wbr>_________________<br>
                  osmf-talk mailing list<br>
                  <a href="mailto:osmf-talk@openstreetmap.org"
                    target="_blank" moz-do-not-send="true">osmf-talk@openstreetmap.org</a><br>
                  <a
                    href="https://lists.openstreetmap.org/listinfo/osmf-talk"
                    rel="noreferrer" target="_blank"
                    moz-do-not-send="true">https://lists.openstreetmap.or<wbr>g/listinfo/osmf-talk</a><br>
                </blockquote>
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      <pre wrap="">_______________________________________________
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