Mosaik-Produktdefinition für DJI Mavic M3M und Indizes-Visualisierungsprofile

Question

Hallo zusammen,

ich möchte die Verwaltung der multispektralen Bilder von einer DJI Mavic M3M, die zu einer einzigen Multiband-TIF verarbeitet wurden, optimieren. Meine Überlegung ist, die verarbeiteten Orthomosaike in ein Mosaik-Dataset zu laden, wie wir es bereits mit RGB-Bildern von Standortaufnahmen machen, aber ich möchte die Intelligenz bei der Verarbeitung multispektraler Datensätze verbessern. Ich frage mich, ob jemand bereits eine Mosaik-Produktdefinition für ein DJI Mavic M3M-System oder eine andere drohnenbasierte multispektrale Kamera hat?

Außerdem möchte ich die Visualisierung der Bildindizes vereinfachen und frage mich, ob jemand bereits Rasterfunktionsvorlagen dafür erstellt hat und wie diese in Verarbeitungsvorlagen umgewandelt und für den neuen Map Viewer im Portal hochgeladen werden?

Viele Grüße,

JamesHead-Mears1 · Answer

Thank you for your reply Peter but that doesn't actually seem to work for me. I have an 8 band MS imagery with the following band profile:

1 Red

2 Green

3 Blue

4 Green Narrow

5 Red Narrow

6 Red Edge

7 NIR

8 Alpha

When I load just an individual tif into Pro it is displayed correctly. However, if I add this to a mosaic with the default profile it shows only black & white image. Is there any reason this would be happening?

I've tried editing the Processing Template to only extract the first 3 bands into the mosaic and it doesn't seem to work either. Is there a trick to defining the import datasets in a template?

PeterBecker · Answer

There is no specific product for the M3M. As the image is pre-processed as a 4band ortho you can create a new mosaic dataset (with default parameters) and then add the Multispectral imagery it should add appropriately. It will take properties of the first image added. Alternatively can set the number of bands etc first. Prior to adding the image you will want to ensure it has pyramids which will speed up access. Alternatively convert it to a cloud optimized format such as CRF (or COG or MRF).  Once added you should be able to see and set raster functions.  The link provides documentation on the default and custom raster functions.. My recommendation would be to add a "AcquisitionDate" field to the mosaic dataset and define the data for this and subsequent images you add to the mosaic dataset. This will simplify a range of temporal tasks such as change detection. The mosaic dataset can also be published to ArcGIS Image Server. You could publish the mosaic dataset to ArcGIS Online.

An alternative workflow would be to directly load the image to ArcGIS Online as tiled imagery. Group the images from multiple dates into a folder in ArcGIS Online. Then look to create a catalog layer that provides a single access point to the images from different dates.

In both cases there are many raster function template as defaults and ones you can access from ArcGIS Online or use the raster function editor to create your own.