Definición de Producto Mosaico para DJI Mavic M3M y Perfiles de Visualización de Índices

Question

Hola a todos,

Estoy buscando optimizar la gestión de imágenes multiespectrales de un DJI Mavic M3M que ha sido procesado en un único tif multibanda. Mi idea es cargar los ortomosaicos procesados en un conjunto de datos mosaico según nuestra otra metodología para manejar estas capturas del sitio a partir de imágenes RGB, pero quería mejorar la inteligencia al tratar con conjuntos de datos multiespectrales. Me preguntaba si alguien ya tiene una definición de producto mosaico para un sistema DJI Mavic M3M u otra cámara multiespectral basada en drones?

También estaba buscando optimizar la visualización de los índices de imagen y me preguntaba si alguien ya ha creado las plantillas de función ráster para estos y cómo se convierten en plantillas de procesamiento y se cargan en portal para el nuevo visor de mapas?

Saludos,

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.