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Pre-Process Survey2 Images in QGIS with MAPIR Plugin

After you have captured your survey photos you will need to prepare your photos for your ortho-mosaic generation software. The steps below will explain how to add GPS location to JPG images and convert RAW to TIFF images.

The RAW & JPG images were saved in the Photo folder inside the DCIM folder of the SD card. We recommend you move the DCIM folder from the SD card to your computer hard drive to speed up processing times. Create a new folder inside the DCIM folder named something such as "Processed".

Inside the Photo folder move the JPG images to a separate folder from the RAW images. You can click on a JPG and in the View>Details layout click the Type column title to sort the folder by type to make selecting only the JPGs easier.

Extract the drone's flight controller log file:

Convert the log file to either a CSV, GPX or KML.

Download and install Geosetter. Apply the GPS locations from the log file to the JPG images, video guide HERE. Move the JPGs back to the Photo folder so the RAW and JPG images are together in the same order they were taken. Do not delete any photos yet if you plan to clean up the unnecessary photos (ascent, turns, descent).

Download our QGIS software package that corresponds to the OS you're using. Once the MAPIR_Processing folder is downloaded, extracted and located in the proper folder run the QGIS program. If this is your first time running our QGIS plugin and you are using a Windows OS please make sure to run QGIS as administrator.

Once QGIS is loaded, go to Plugins > MAPIR > MAPIR at the top of the window to launch our plugin:

 On the Pre-Process tab select your camera model from the drop down menu. Click the browse buttons and select your input and output file locations. Then click the "Pre-Process Images" button to begin the conversion of the RAW to TIFF images.

The images will be processed as quickly as possible based on the speed of your computer. It may take awhile so please be patient. When the process is complete the log window will let you know it's complete. 

You are now ready to load the images into your ortho-mosaic generation software. If you have captured multi-spectral reflectance data we recommend calibrating your images for the best results.




Nolan Ramseyer
Nolan Ramseyer

Author