[SOLVED] Problem with face recognition

[biologisch]

After upgrade to ubuntu 22.04:

/etc/zm# sudo -u www-data /var/lib/zmeventnotification/bin/zm_train_faces.py 5
INF [zm_train_faces] [Setting up signal handler for logs]
INF [zm_train_faces] [Switching global logger to ZMLog]
INF [zm_train_faces] [Reading config from: /etc/zm/objectconfig.ini]
INF [zm_train_faces] [Reading secrets from: /etc/zm/secrets.ini]
INF [zm_train_faces] [Ignoring monitor specific settings, as you did not provide a monitor id]
04/26/23 22:56:06 zm_train_faces[35638] ERR face_train_dlib.py:128 [Error initializing face recognition: local variable 'person' referenced before assignment]

Traceback (most recent call last):
File "/usr/local/lib/python3.10/dist-packages/pyzm/ml/face_train_dlib.py", line 118, in train
.format(person), len(face_locations))
UnboundLocalError: local variable 'person' referenced before assignment

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/var/lib/zmeventnotification/bin/zm_train_faces.py", line 33, in <module>
train.FaceTrain(options=g.config).train(size=args['size'])
File "/usr/local/lib/python3.10/dist-packages/pyzm/ml/face_train_dlib.py", line 129, in train
raise ValueError(
ValueError: Error opening known faces directory. Is the path correct?

[Magic919]

What does you known faces directory/content look like? That's what I'd check.

[biologisch]

Only old pictures from the time before I upgrade to ubuntu 22.04

[Magic919]

Make sure it’s structured per the docs. If it’s just a folder of pictures, that’s not right.

[biologisch]

FIX!
After a while and some time for investigation I found the bug and here is the fix:
1. After a sudo -u www-data /var/lib/zmeventnotification/bin/zm_train_faces.py

Code: Select all

dtype=uint8), <_dlib_pybind11.full_object_detection object at 0x7fe95a72ce70>, 1
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/var/lib/zmeventnotification/bin/zm_train_faces.py", line 33, in <module>
    train.FaceTrain(options=g.config).train(size=args['size'])
  File "/usr/local/lib/python3.10/dist-packages/pyzm/ml/face_train_dlib.py", line 130, in train
    raise ValueError(
ValueError: Error opening known faces directory. Is the path correct?

2. Modify this script here -> /usr/local/lib/python3.10/dist-packages/pyzm/ml/face_train_dlib.py
3. Go to line 80 and replace

Code: Select all

known_face = known_face[:, :, ::-1] 

with

Code: Select all

known_face = cv2.cvtColor(known_face, cv2.COLOR_BGR2RGB)

4. Modify this script here -> /usr/local/lib/python3.10/dist-packages/pyzm/ml/face_dlib.py
5. Go to line 182 and replace

Code: Select all

rgb_image = image[:, :, ::-1]

with

Code: Select all

rgb_image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)

[iconnor]

Fixes merged

[Meinta]

oh. I got it Territorial io

[GoDie]

is this related?

Code: Select all

 sudo -u www-data /var/lib/zmeventnotification/bin/zm_train_faces.py 
INF [zm_train_faces] [Setting up signal handler for logs]
INF [zm_train_faces] [Switching global logger to ZMLog]
INF [zm_train_faces] [Reading config from: /etc/zm/objectconfig.ini]
INF [zm_train_faces] [Reading secrets from: /etc/zm/secrets.ini]
INF [zm_train_faces] [Ignoring monitor specific settings, as you did not provide a monitor id]
ERR [zm_train_faces] [Error initializing face recognition: module 'cv2' has no attribute 'COLOR_BG2RGB']
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/dist-packages/pyzm/ml/face_train_dlib.py", line 81, in train
    known_face = cv2.cvtColor(known_face, cv2.COLOR_BG2RGB)
AttributeError: module 'cv2' has no attribute 'COLOR_BG2RGB'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/var/lib/zmeventnotification/bin/zm_train_faces.py", line 33, in <module>
    train.FaceTrain(options=g.config).train(size=args['size'])
  File "/usr/local/lib/python3.9/dist-packages/pyzm/ml/face_train_dlib.py", line 131, in train
    raise ValueError(
ValueError: Error opening known faces directory. Is the path correct?

[fiatguy85]

There may have been a typo on line 82 of face_train_dlib.py when the fixes were made. It should be cv2.COLOR_BGR2RGB.

[EK701]

There may have been a typo on line 82 of face_train_dlib.py when the fixes were made. It should be cv2.COLOR_BGR2RGB.

FYI, this is still an issue and fixing the typo solves it.

[iconnor]

Current version has the typo applied. Was committed on July 9th.

[EK701]

Current version has the typo applied. Was committed on July 9th.

Can you clarify what you mean by current version? I was running ZM 1.37.50 and had the typo. I just did an apt update and apt upgrade and it did update to a new sub-release of zm 1.37.50, but it made no changes to /usr/local/lib/python3.10/dist-packages/pyzm/ml/face_train_dlib.py

Am I missing something?

Thanks!

[iconnor]

pyzm is packages separately from zoneminder. I doubt apt will pick up the changes (perhaps we should package it for apt, I'll look into that). You need to updateit with pip. Or pip3 .

sudo pip3 install pyzm --upgrade

Should get you 0.3.64

[EK701]

pyzm is packages separately from zoneminder. I doubt apt will pick up the changes (perhaps we should package it for apt, I'll look into that). You need to updateit with pip. Or pip3 .

sudo pip3 install pyzm --upgrade

Should get you 0.3.64

Thanks for the clarification!