Step 1: Upload Your Data
Upload your data using the MicaSense Uploader application, which can be downloaded from the Downloads page. The Uploader app can be used on Windows and Mac operating systems. After a flight, remove the SD card from the camera, and insert it into your computer. For Sequoia, you can also connect the Sequoia camera to your computer using the USB cable to access the files. You can either copy the files to the hard drive and then upload them, or upload them directly from the SD card or storage device.
In order to transfer files to ATLAS, you must first create a new Upload. This Upload is given a name for easy recognition later, and optionally, a longer description can be used to record notes about the data collected. Each output job (for example, each mosaic map) will be created from a single Upload. This means that if, for example, you flew multiple flights to capture a single field, you should group those flights into the same Upload. It is also possible to generate multiple output mosaics from a single Upload, as long as the Upload covers different regions, such as two different fields. In this case, upload the files together or separately; either way works!
Step 2: Create Your Farms and Fields
An ATLAS processing job creates a mosaic for a particular field. Before processing can begin, you must define a field to indicate the region of interest. Later, this will allow you to easily organize and view your data over time after you have collected multiple maps for the same field. You can create a field before you upload data, while the data uploads, or anytime thereafter.
All fields are grouped into farms, so before you can create your first field, you first create a farm on the Farms page. In some cases, you may only want a single farm to contain all of your fields, or you may wish to organize your fields into multiple farms.
Step 3: Request Processing
Once you have created one or more fields, and once your Upload has completed, you can begin a processing job. When the Upload has completed, we will automatically check to see if the data you uploaded covers any of your fields, and then we will automatically start a processing job for any fields that are more than 80% covered by the uploaded images. You can see all of the fields covered (even it only a tiny part of the field was captured) in the Datahub page. It is still possible to process Uploads that have less than 80% coverage: to do so just click the Process button next to that field.
This field is covered by the Upload. Click Process to begin processing
This field has been submitted for processing, and is in the queue. You will get an email when the processing is completed and results are available.
This field has already been processed. You can view the results on a map, or download a raw GeoTIFF with reflectance layers or Digital Surface Model (DSM).
Step 4: Review Your Output
Once your processing job is complete, you can view the RGB imagery and an NDVI map live in your browser, or you can download the raw output, which comes in two files:
GeoTIFF: This is a 4-layer or 5-layer, 16-bit ortho-rectified GeoTIFF file. A GIS application is needed to open this type of file. Each layer of the GeoTIFF contains a calibrated reflectance map for a particular wavelength band, as follows:
Layer Number RedEdge Sequoia Layer 1 Blue Green Layer 2 Green Red Layer 3 Red Red Edge Layer 4 Red Edge Near IR Layer 5 Near IR Not Applicable
The pixel values are proportional to % reflectance, with a pixel value of 32768 being equal to 100% reflectance (65535 is equal to 200% reflectance).
DSM: This is a single layer, floating-point ortho-rectified GeoTIFF file. Each pixel in the file represents the height of the object (i.e. ground, or canopy) at that location, in meters above sea level.