Post Processing NDVI and Stitching

I am not a drone guy, sorry :) but capturing images with a Cessna. One day we are going to engineer our own drone once they become more efficient for our operations. However, that is a different discussion for another day.

Here are the specs of what I have for images.

Raw in BMP format, 6 inches per pixel.

Filters: Red, Green, Red Edge, NIR, and Color

I am looking to create GEOTIFF's and NDVI,NDRE,GNDVI images. 

The goal is to have a Color image as a base image, utilizing the Google API. This will allow me to have an updated Google Map based around the collection. Then have overlays of the Multispec images. 

The problem that I have is we are running into software issues, creating our own software. We are able to post process, but it takes way to much time, then its worth to complete a field. I am looking for additional options that I can use to complete stitching and acquire my product. 

The problem that I see with stitching is Microsoft ICE is good, but not great, I feel with the blending of the edges it can change the values of the image if we stitch our raws. If we convert to an NDVI image and attempt to stitch that its a nightmare, It does not find the points properly. 

We have telemetry data that also shows the altitude of each image for post processing to ensure we match up pixel size, since there can be a > or < 50 ft per image. I have demo'd allow of the free stuff that is out there, but can't seem to find out what works best. 

I am currently looking at agpixel to kind of take over what we are doing now, until we can either do it in house, or if it is value added to outsource all post processing. 

If there are any post processing pros out there that can help, I can supply with with a few raws to see if you can do something that I can't. Any help would be great. 

Also if there are any programmers out there interested that understands Post Processing we may be looking for an off site programmer to add to our team. I am not sure if that is against the forum rules, if it is please edit this last sentence. I do not want to break any rules of the forum. 

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Replies

  • If you are looking to process the imagery yourself, a fairly cost effective solution involves using Agisoft PhotoScan Pro ($3499) and Global Mapper ($450). Here is a video showing a sample workflow. If you are interested in moving forward with this solution, shoot an email to info@fieldofviewllc.com

    https://www.youtube.com/watch?v=nDTrlX55Zxw

  • I'm working with this agriculture guy, he is excellent and doing exactly what you describe for us. Especially on georef GNDVI.

    gareth@landscan.com.au

  • I uploaded my information to the site.. You can reach me at jayson.ek@gmail.com if you have any questions. i loaded 3 images per filter set and provided you with a key that shows which image is per filter. 

  • Hello Jayson,

    Watch this tutorial made by Gerard:

    https://www.youtube.com/watch?v=Nsl0fUtc2ug&spfreload=1 

    Upsides are that it only uses open-source softwares.

    Good luck with your work,

    Gustavo

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