Darkflow: Question about "assert walker.offset == walker.size" in loader.py

Created on 13 Jul 2017 · 4Comments · Source: thtrieu/darkflow

I was wondering what this assert is checking for: https://github.com/thtrieu/darkflow/blob/master/darkflow/utils/loader.py#L75

I have a custom trained model and config file from darknet and when I tried use prediction I keep getting the "expected x bytes, found y" error. If I comment it out then darkflow runs fine, but I also am unsure what issues that would cause?

Source

Kowasaki

Most helpful comment

I got the same problem too. Don't comment that line. Just go to this file https://github.com/thtrieu/darkflow/blob/479c83e14559fd5eceb9a9f612503b29a67fac5c/darkflow/utils/loader.py#L121 and change to self.offset = 20 it will work

minhnhat93 on 17 Jul 2017

👍6 🎉1

All 4 comments

Hmmm well it looks like now the detection can't find anything. Still wondering what walk.offset is though.

Kowasaki on 13 Jul 2017

minhnhat93 on 17 Jul 2017

👍6 🎉1

@minhnhat93 You're right it worked! Thanks so much! Interestingly, the results I got from darkflow detection is slightly different from darknet using the same weights. Not sure if it has anything to do with the offsets though.

Kowasaki on 18 Jul 2017

after change self.offset = 16 ==> self.offset =20, You need uninstall darkflow, and pip3 install it (reinstall it)