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P3D v5 No TFE feature detection when processing

Clutch Cargo

Clutch Cargo

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I believe I have created a good vegetation filter using the Back Projection method using 4-band imagery. I can clearly see the veg detection in TFE:

TFE no Back Projection detection002.jpg


However zero detection?

TFE no Back Projection detection.jpg


Any idea where I might be going wrong? I attached my TF2 without the test samples (they are 82MB), so not sure if this helps but maybe you can see my values in my steps.
 

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arno

arno

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Hi,

Are you sure the image you are using in the script matches those you use as samples? So same number of channels, etc?
 
Clutch Cargo

Clutch Cargo

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Oh-oh!? Ok, the sample that is highlighted in the preview above is image "A2" and you can see in the script above I am detecting from Area "A2", so that matches up BUT (and sounds like a BIG BUT), the samples are 4-band and my image being detected is 3-band. Am I hearing correctly the images being detected but have the same number of bands? Think I will conduct a test while I hear back.
 
arno

arno

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Hi,

Yes, if your samples are 4 band and the script is made for that, then the images you feed from the script need to be 4 band as well.
 
Clutch Cargo

Clutch Cargo

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Yep, just found that out. Did a new test and now I am seeing plenty of detection. A lot more work ( and time), using the Back Projection but possible better results of grass elimination of trees. Need to dive back into the NDVI method as if I can tweak that with your tips and get similar results that may be the way to go. Ah... the fun!

I guess I could try the 3-band samples against 3-band images using Back Projection as well to see if I get similar results. Add that to me lists of tests.
 
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