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Update on Using Benchmarks for Imagery Offsets

Posted by DougPeterson on 16 September 2016 in English. Last updated on 18 September 2016.

In a previous diary entry I documented my use of survey points for creating imagery offsets for Bing and USGS Large Scale Imagery. At the time I did not think to create them for USGS Topographic as the points were not on the map. However, I came to realize I can still improve the offset there if features (primarily roads) in the area survey point are in good alignment and can be seen on that layer. These are not as good as the satellite but it would at least be an improvement for tracing old roads, trails and wetland contours.

I also decided I should create offsets for Mapbox Satelitte. I do not use that layer as much as the resolution or clarity seems a little less. In addition, I sometimes have issues with cloud cover on that layer. Creating the offset does not take that much more effort and it might be of use sometime for myself or someone else. The cloud cover issue means I was not able to create an offset each time.

Entry updated to move personal documentation to personal wiki.

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Discussion

Comment from BushmanK on 17 September 2016 at 17:03

Just in case, wouldn’t it be more convenient to keep information like that on a personal OSM Wiki page?

Comment from DougPeterson on 17 September 2016 at 18:08

I am not sure what a My Diary entry would be used for then. Maybe it is not a good title if that is the case. In this context it was adding a little more commentary on a prior personal entry and prior comment, granted it was mostly the rewritten comment made more convenient for me to find. As well, I am not sure what is being referred to as personal OSM wiki page.

Comment from BushmanK on 18 September 2016 at 17:18

“My Diary” is a kind of blog, intended for sharing all sorts of information with other OSM project members. All diary entries are visible to everybody on this page, just like a news feed. There is no search, categorization, tags and other things to present any information in any kind of systematic form.

If you log into OSM Wiki here osm.wiki/ , your user page will be like this osm.wiki/User:DougPeterson . And then, you can create any page there to keep important data, not as a blog, but as a documentation, since Wiki is for documentation. To create a page, you need to log in first, then - go to an address you want, like osm.wiki/User:DougPeterson/Imagery_shifts and click “Create” or “Create Source” next to the search bar in the top right corner. This page will be searchable, you can track changes and history. Pages you’ve created or edited will be listed here: osm.wiki/Special:Contributions/DougPeterson

Comment from DougPeterson on 18 September 2016 at 21:56

Thanks for the help. I have created a user wiki page along with an imagery shifts page. I have then added a link to my profile so it is not any less convenient than getting to My Diary entries.

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