I tried to use transfer learning method using VGG-19 on https://www.kaggle.com/datasets/robinreni/signature-verification-dataset.
Dataset: 2149 images, 1649 traning, 500 fake
69 fake classes,69 genuine classes in training
21 fake classes, 21 classes genuine in testing
70% training, 30% validation
Confusion Matrix :
[[252,0],
[6,242]]
Precision : 1.0
Recall : 0.975806