8000 Seed detection model problem · Issue #47 · ai-cfia/nachet · GitHub
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Seed detection model problem #47
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@TaranMeyer

Description

@TaranMeyer

Description
While doing user testing on Centaurea melitensis, I found that the seed detection model had a REALLY hard time detecting this species properly.

Bug Summary:

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For some reason, the model had a really hard time detecting the correct number of these seeds. I had to adjust the positioning and then increase the contrast to the point where the pappus (the white fluffy part at the top) pretty much disappears.

Steps to Reproduce:
Load any of the images below and classify. The results in my screenshot were from the 27 species model but I don't think the seed detector has changed?

Expected Behavior:
Five seeds would be detected, with boxes that overlapped if necessary.

Actual Behavior:
Boxes either straddle multiple seeds or some seeds are missed entirely.

Environment:

Commit Hash: a427278e-28df-428f-8937-ddeeef44e72f

OS Version: Windows 11

Browser Version: Edge

Extra Screenshots:

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Image This last picture was finally detected properly, but you can see it is pretty strange-looking compared to the other ones.

Additional Context:
I suspect the problem is something to do with the pappus (the white feathery stuff at the top of the seeds) having low contrast to the background and not a strongly defined edge. When taking images of seeds with pappus we often use a darker background, but I worried this might mess with the results further since the model, as I understand it, was trained with light background images. On the up side, the IDs were all correct!

Suggested Fix: (facultatif)
[If you have an idea of how to fix the bug, describe it here.]

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