Latest Contributions by CodyBenkelman

Flavio sorry I couldn't respond sooner.  The vertical values from most drones can have large errors - up to 100 meters.   the RTK corrections are applied to the single images, but unfortunately the DJI API does not allow us to access the RTK corrections in realtime, so the GVLog files do not include corrected values. We have a draft tech support article written that describes how to apply a correction to the GVLog file using MS Excel.  I can send you a copy of that draft article if you need it.  We hope to publish the article soon. Cody B.  ... View more

Matthias These images must be captured by a professional camera system - you can continue to experiment with values that you are estimating, but in the end you will want to get more complete data from the service provider.  e.g. your table shows CamPitch of 40 degrees for every photo, but I assume that is something you estimated?  I expect this camera system must report an accurate Pitch angle.  As long as you are estimating values, your results will vary in accuracy.  Please try to get a complete set of metadata, and two sequential exposures (4 images in each direction). Cody  B ... View more

Arahman Can you please rephrase your questions?  Q1 is not clear - you can acquire drone data with your own drone or others can provide the raw drone data to you.  If you're using Drone2Map, you can do the rectification (orthorectification) on your own computer.  Note we also offer a cloud processing service called SIte Scan that was not reflected in this blog from 3 years ago. In Question 2, all of the required data is captured by the drone except for some configuration data (based on the drone camera) which is built into Drone2Map, Site Scan, or Ortho Mapping for nearly all common drones.  If you are concerned about other data, please let us know specifically which type of data you are questioning.   As for the last question, the " essential workflow"  is relatively simple.  If you mean the *minimum* workflow, single images captured by any modern drone can be orthorectified by Drone2Map, Site Scan, or Ortho Mapping .  Once processing is complete, if you have ArcGIS Enterprise with Image Server, you can publish the results directly from any drone processing software from Esri.  If by "essential" you mean the *recommended* workflow, we would also recommend you use the Site Scan Flight software to plan and control your drone flight.  It's built into Site Scan for ArcGIS but if you're using Drone2Map or Ortho Mapping, you can get a free copy of Site Scan Flight at http://esriurl.com/SSLE This is a more recent web page https://www.esri.com/en-us/arcgis/drone-mapping that will lead you to more information. If this does not answer your questions, please let us know. Cody B.     ... View more

Matthias I'm sorry I misunderstood the "CC49" label in the screenshot - I thought that was an image name but now I understand that is a reference to the coordinate system. No, there is no specific setting for multi-head camera systems, but I wanted to be sure I understood your data source.  And for testing, it would be helpful to have all 4 images from one exposure point, or even better to have 2 or more sequential exposures.   Am I correct that you have no other input data?  The ONLY data you have is the image files, where GPS position and camera orientation are recorded only as information embedded in the EXIF tags of the images? You said " This workbook was created with an import of  feature class of points ".  How was that feature class of points created?  Cody B ... View more

Matthias Can you provide more sample data, e.g. your input GPS file, and information about the camera interlock angles?  This doesn't seem complete and it's hard to advise.  The screenshot you show says "CC49" but the metadata you provided indicates this is image BH75_Nord.  Is the red point at the correct location for this exposure?  If yes, then this is not a problem with the coordinate system.  Your metadata appears to be from a multi-head oblique camera system - is that correct?  Your metadata does not show 4 images at any exposure station (nord, sud, oest and est).    Can you confirm if your flight altitude in your GPS file is referenced to ellipsoidal height or orthometric height? Cody B ... View more

Hi Kris.   One of Vinay's hyperlinks was redirected - I wanted to be sure you found this  https://doc.arcgis.com/en/imagery/workflows/resources/using-stereo-imagery.htm  Note that for creation of orthos and DEM extraction, ArcGIS Pro provides a complete workflow from interior orientation through product creation.  For this, you need only ArcGIS Pro Advanced license, not the Image Analyst extension - it's referred to as the "Ortho Mapping" capability.  But this does not include stereo viewing, so if you want full stereo capabilities then you are correct that you need Image Analyst. Also note that the camera model is beneficial, for improved accuracy, but the camera model is not absolutely required.   Let us know if you need more assistance. Cody B ... View more

Jamal Thanks, we appreciate your comments.  There are so many capabilities within ArcGIS Pro plus its extensions, it can be difficult to give ideal names to all of them.  We have many debates within Esri about what names to use for functions, tools, properties, and software products - there are always competing opinions, and usually good reasoning on both sides of every discussion.  This is just my personal opinion, but I feel proper naming is more important with individual tools/properties/etc. than the names for high level capabilities - but again we don't always make perfect decisions. Even when names/labels are not perfect, we find it creates unnecessary confusion if we change the names that people have become familiar with.   Perhaps "ebay" is not the best name for an online buying/selling platform, but once users become familiar with it, even a strange name can work well. Cody  ... View more