MMM-Facial-Recognition-OCV3 error at tools.train.py

[alfi153]

Hello

I use the version OCV3 of face recognition.
My problem is when I try again my face to increase the hit rate, I get the error message when typing “python tools.train.py”:

Remember to set the name list environment variable FACE_USERS
Reading training images…

Assign label 1 to Alfred

OpenCV Error: Assertion failed (ssize.width > 0 && ssize.height > 0) in resize, file /home/pi/opencv/modules/imgproc/src/imgwarp.cpp, line 3483
Traceback (most recent call last):
File “tools.train.py”, line 14, in
ToolsTrain().train()
File “/home/pi/MagicMirror/modules/MMM-Facial-Recognition-OCV3/lib/tools/train.py”, line 53, in train
faces.append(self.prepareImage(filename))
File “/home/pi/MagicMirror/modules/MMM-Facial-Recognition-OCV3/lib/tools/train.py”, line 29, in prepareImage
return self.face.resize(cv2.imread(filename, cv2.IMREAD_GRAYSCALE),ToolsConfig.FACE_WIDTH, ToolsConfig.FACE_HEIGHT)
File “/home/pi/MagicMirror/modules/MMM-Facial-Recognition-OCV3/lib/common/face.py”, line 113, in resize
return cv2.resize(image, (face_width, face_height), interpolation=cv2.INTER_LANCZOS4)
cv2.error: /home/pi/opencv/modules/imgproc/src/imgwarp.cpp:3483: error: (-215) ssize.width > 0 && ssize.height > 0 in function resize

please help

[SdeGeata]

Bump! Same error message.

@alfi153 said in MMM-Facial-Recognition-OCV3 error at tools.train.py:

Hello

I use the version OCV3 of face recognition.
My problem is when I try again my face to increase the hit rate, I get the error message when typing “python tools.train.py”:

Remember to set the name list environment variable FACE_USERS
Reading training images…

Assign label 1 to Alfred

OpenCV Error: Assertion failed (ssize.width > 0 && ssize.height > 0) in resize, file /home/pi/opencv/modules/imgproc/src/imgwarp.cpp, line 3483
Traceback (most recent call last):
File “tools.train.py”, line 14, in
ToolsTrain().train()
File “/home/pi/MagicMirror/modules/MMM-Facial-Recognition-OCV3/lib/tools/train.py”, line 53, in train
faces.append(self.prepareImage(filename))
File “/home/pi/MagicMirror/modules/MMM-Facial-Recognition-OCV3/lib/tools/train.py”, line 29, in prepareImage
return self.face.resize(cv2.imread(filename, cv2.IMREAD_GRAYSCALE),ToolsConfig.FACE_WIDTH, ToolsConfig.FACE_HEIGHT)
File “/home/pi/MagicMirror/modules/MMM-Facial-Recognition-OCV3/lib/common/face.py”, line 113, in resize
return cv2.resize(image, (face_width, face_height), interpolation=cv2.INTER_LANCZOS4)
cv2.error: /home/pi/opencv/modules/imgproc/src/imgwarp.cpp:3483: error: (-215) ssize.width > 0 && ssize.height > 0 in function resize

please help

[SdeGeata]

@SdeGeata Anyone got an answer to this one? I’m still stuck on this.

[nischi]

@alfi153
Do you tried what are in the docu?

Test your trained model
Make sure your training.xml from running train.py is in this directory
Specify your user labels in the environment with

export FACE_USERS=name1,name2,name3

Run python tools.facerecognition.py to test your trained model.

[SdeGeata]

@nischi

Hello Nischi;

Only got as far as “python tools.train.py”. That is what generates the error and it doesn’t generate the XML file that it should, so I can’t verify my training.

Everything up until then is fine, and there are two named folders in the specified folder (training_data/) with pics of myself and my girlfriend. These photos were already processed by the previous function; “python tools.capture.py”. I don’t know why its bugging.

[nischi]

@SdeGeata
It seems he can’t resize the image for some reason. Have you checked all your pictures that nothing is corrupt and have you checked that your python has access to the files as well?

[SdeGeata]

@nischi

Yeah, all the photos load fine in preview app and they were all found, formatted and placed in the folder by the previous step. I don’t know why it is having a problem.

[SdeGeata]

@SdeGeata

I have gone ahead and started the process over again, just in case i missed something. I uninstalled everything and did a fresh install. It won’t even capture anymore, never-mind training with the images i already have.

I just want to get this thing going.

[nischi]

@SdeGeata
Do you working with a mac? Maybe you have some issues with the permissioning, have you tried (only for testing) to give all folders full access? i had some issue also if i used sudo for some stuff where i shoudn’t.

[nischi]

@SdeGeata
I am currently working on a new version of face recognition with another method and the new ocv 4 version. Current tests works much better than this old module. i only need to finish the module soon. i think this or next week i should have a first version which works.