Multispec camera problem pix4d1/11/2024 ![]() ![]() In fact is not reading Omega / phi / Kappa values.ĭoes anyone know how make it read these data and not entering by hand one by one ? Hi, when i import images taken from a P4RTK it read the location but accuracy is 5m/10m regardless of i click on “Standar”, “low” or “custom” geolocation accuracy. I think this would be more accurate for a large project area. I ultimately think the best method will be to leave everything in ellipsoid heights and then use NOAA’s VDatum to apply Geoid12B to the. I see both ways work, but does Pix4d recommend one method over the other? Using this method I have to bring in my GCP’s in WGS84 ellipsoid heights. I have also done it by leaving the image coordinate system geoid height at 0 and then adding the geoid height to the output coordinate system. This method allows me to input my GCP’s in NAVD88 orthometric heights. I have done it by adding the geoid height to the image coordinate system upon image import and then outputting in my desired coordinate system with a 0 value entered for geoid height. I have used your method with success to shift my ellipsoid heights to the NAVD88 vertical datum using Geoid12B by entering a geoid height in " Geoid Height Above WGS 84 Ellipsoid" box that best defines my project area. First look at the Phantom 4 RTK - User test by Michael Cutfield.DJI Phantom 4 RTK: next gen accurate drone surveys - Official Pix4D blog post.focal length, we recommend using the All Prior processing option. In case the optimized camera parameters are far from the initial values, e.g. The vertical offset could be present due to wrongly selected vertical coordinates system or custom geoid models.In some cases, when flying fast, close to the ground or in high winds, enabling the linear shutter optimization could reduce the offset. The horizontal offset could be caused by the horizontal grid corrections and transformations.What could cause a big offset when comparing the results with checkpoints? More in the Phantom 4 Pro Rolling shutter effect community post.More in the When to use the Geoid Height Above the Ellipsoid Function? and How to define Pix4D outputs with respect to a Geoid model articles.ĭo I need to enable the linear shutter optimization? There is no direct way of selecting or importing a different vertical datum.Ī workaround is to either provide the offset between the desired datum and the ellipsoid of the selected horizontal coordinate system or select the option Arbitrary Coordinate System for the outputs and the GCPs and import GCPs with coordinates in the coordinate system you specified.Is it possible to use another vertical datum besides EGM84, EGM96, EGM2008 or the ellipsoid of the selected horizontal system? More in the FAQ on the accurate geolocation pipeline. We recommend using it for large datasets (faster processing) and when the dataset contains homogeneous or complex visual content (forest and dense vegetation, flat terrain with agriculture fields, snow, sand, and water surfaces). ![]() Accurate geolocation and orientation pipeline can be used when both, image geolocation and orientation, are precise.3D Maps, and the following processing options can be kept:Ĭan I process with the accurate geolocation pipeline? There is no need to change the default processing templates, e.g. The correct vertical coordinates system is automatically recognized and set to WGS 84 Ellipsoid. The optimized camera parameters for P4RTK (FC6310R_8.8_5472x3648) are already included and automatically recognized in the internal camera database. If necessary, edit the Accuracy Vert/Horz column to define the actual accuracy values. (PPK) After PPK postprocessing in a third party software, accurate image geolocation can be imported using the Image geolocation file (.csv.(RTK) Image geolocation, horizontal and vertical accuracy is automatically recognized when importing the images. For datasets acquired with DJI Phantom 4 RTK (P4RTK) we recommend the following workflow: Creating a project ![]()
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