: When a challenge is triggered, it typically presents a "Match-to-Sample" task (e.g., finding a specific object in a grid) or a "Sequence Challenge." These are designed to be difficult for standard OCR (Optical Character Recognition) but intuitive for humans.
Commercially, some solving services (e.g., 2Captcha, CapMonster) offer MTCaptcha solving by: mtcaptcha recognition
Two approaches were evaluated:
We utilized a ResNet50 architecture pre-trained on ImageNet (Transfer Learning). : When a challenge is triggered, it typically