This point will be used to correct the Google Earth image coordinates interactively. Login or register to post comments Sun, 10/19/2014 - 8:51am Box Car 6 years again, bdhsfz6 wrote: The lack of visual reference is the reason accuracy is important in creating POI This is assuming of course that you have a good clear view of the sky. In AirPhotoSE, Google Earth, select "Find in Grid". get redirected here
This is not unexpected. It's fun to think that the plane/satellite is always exactly overheard when the shutter clicks and/or that all the imagery in Earth (or any similar program) is 100% orthorectified. As mobile computing devices become more and more prevalent and powerful, they are becoming more and more useful in the field of law enforcement investigations and forensics. I’m hoping to continue the above discussion on how to create accurate workable POI files considering the inherent flaws in GE / EPE, GPS position accuracy and user interpretation. https://productforums.google.com/d/topic/maps/6K294uFlRmU
In my neighborhood, an exact geographic location shows up offset about 30 feet in Google Earth, or pretty much what we see in the picture above. Unfortunately, I’m not great at putting into words what I can clearly see in my mind but I’ll give it a shot. You are right, 10 feet off is excellent. That error is around 30 feet in most of North America.
Back to top of the page up there ^ #5 earthshaker Geocacher Group: Members Posts: 101 Joined: 28-September 04 Posted 08 April 2008 - 06:25 PM Just for fun today Michael has been published in the Thomas J Cooley Law Journal and on Forensic Focus. They even have the name of the street where I work named incorrectly. Google Earth seems to be five or so feet out of alignment with my waypoint...
For areas smaller than about 2 kilometres square, the error is usually of the order of a meter or two and can usually be neglected. Accuracy Of Google Earth I really get into this stuff and get carried away sometimes. So in areas of extreme topography, images won't be "stretched" properly to fit the terrain. http://www.gearthblog.com/blog/archives/2014/03/fix-errors-google-earth.html The compound effect caused by an error such as the one above would probably not be a serious issue when trying to create a waypoint for say a driveway entrance or
This book teaches you how to leverage Google's free tool to craft compelling location-based evidence for use in investigations and in the courtroom. All image screenshots from Google Earth are Copyright Google All other trademarks appearing here are the trademarks of their respective owners. The actual error varies by elevation and latitude. Back to top of the page up there ^ #10 TrailGators Premium Member Group: +Premium Members Posts: 14100 Joined: 27-December 02 Posted 08 April 2008 - 07:43 PM SiliconFiend, on
Make sure that you have chosen your desired grid in Options first. This has included public Web sites, private ones on corporate intranets, and solutions that integrate them. How Accurate Is Google Earth Gps Coordinates Most trigonometric points are hard to find in Google Earth. Accuracy Of Google Maps Copy the coordinates to the Clipboard an paste them into the selection fields.
ReplyLeave a Reply Cancel reply Previous post: SketchUp 2014 and a refreshed 3D Warehouse releasedNext post: The Topography of Plate Tectonics in Google Earth Hot Posts NOAA post Hurricane Matthew imagery Get More Info IMO, GPS users should be aware of the error possibility and make decisions accordingly. The result in Google Earth will be almost as accurate as the GeoPortal, with very small differences attributable to the resolution and hand-placement of the calibration move magnifier. I've seen imagery alignment problems on the order of 50 feet, more in Google Maps than in Google Earth; for some weird reason they seem to have different imagery or alignment. Bing Maps
AirPhoto does not correct for distortion in a Google Earth image but it does transform the calibration points at the corners and centre of the image to the ellipsoid of the The positions in Google Earth don't necessarily coincide with the correct position on Mother Earth. because I think that the stitching together of the images results in duplication and I chose the pole I thought was the real one with a transformer. useful reference This post has been edited by Grasscatcher: 08 April 2008 - 04:43 PM Back to top of the page up there ^ #4 OpenTrackRacer GPS Junkie Group: +Premium Members Posts:
Shopping at Amazon through any of the links below helps keep this site up and running. In an attempt to answer your question, there really is only one error associated with placing a pushpin in Google Earth. Back to top of the page up there ^ #3 Grasscatcher Geocacher Group: Members Posts: 1085 Joined: 25-August 01 Posted 08 April 2008 - 04:40 PM Google earth is mostly
He previously taught as an instructor and has written courseware for IT training courses. Bibliografische InformationenTitelGoogle Earth Forensics: Using Google Earth Geo-Location in Digital Forensic InvestigationsAutorenMichael Harrington, Michael CrossVerlagSyngress, 2014ISBN0128005041, 9780128005040Länge122 Seiten  Zitat exportierenBiBTeXEndNoteRefManÜber Google Books - Datenschutzerklärung - AllgemeineNutzungsbedingungen - Hinweise für Verlage - Problem Michael has been a freelance writer and technical editor on over four dozen I.T. This problem was reported many months ago and appears not to have been fixed.
BTW, I agree with the pole you chose. In this case, the image with the displaced calibration point is the sharpest of the three. I could take the "X marks the spot" coordinates from Google Earth in this case if I wanted to. this page Back to top of the page up there ^ #13 table/cache Geocacher Group: Members Posts: 24 Joined: 01-July 07 Posted 10 April 2008 - 10:23 AM I think it's telling
The blog authors have no liability for any uses of the software or data described here. Holy smokes, you're complaining about a 5 foot error?