Hcaptcha on Bingjie's Blog https://blog.bj-yan.top/en/tags/hcaptcha/ Recent content in Hcaptcha on Bingjie's Blog https://blog.bj-yan.top/favicon.png https://blog.bj-yan.top/favicon.png Hugo -- gohugo.io en-US Fri, 10 Jun 2022 14:28:03 +0800 Test-Time Augmentation and Model Attacks/Defenses: Starting from hCaptcha Image Noise https://blog.bj-yan.top/en/p/blog-hcaptcha-test-time-augmentation-and-model-attack-defense/ Fri, 10 Jun 2022 14:28:03 +0800 https://blog.bj-yan.top/en/p/blog-hcaptcha-test-time-augmentation-and-model-attack-defense/ Discussing test-time augmentation, image denoising, and model attack/defense strategies in the context of hCaptcha image noise, while reflecting on the limitations of CAPTCHAs regarding robustness and user experience. hCaptcha Seaplane Recognition: Model Training and Testing https://blog.bj-yan.top/en/p/blog-hcaptcha-seaplane/ Sun, 01 May 2022 23:35:46 +0800 https://blog.bj-yan.top/en/p/blog-hcaptcha-seaplane/ Records the training and testing practices for the hCaptcha seaplane recognition task, discussing sample annotation, overfitting issues, and the organization of the model training workflow. hCaptcha Leaf Elephant Recognition: Data and Model Practice https://blog.bj-yan.top/en/p/blog-hcaptcha-elephant-drawn-with-leaves/ Sun, 01 May 2022 01:53:15 +0800 https://blog.bj-yan.top/en/p/blog-hcaptcha-elephant-drawn-with-leaves/ Analyze the data and visual characteristics of the hCaptcha leaf elephant image recognition task, discussing sample classification, model training, and identification challenges caused by similar images. hCaptcha Left-Flying Airplane Recognition: Image Processing Approach https://blog.bj-yan.top/en/p/blog-hcaptcha-sky-left-airplane/ Thu, 03 Mar 2022 23:34:48 +0800 https://blog.bj-yan.top/en/p/blog-hcaptcha-sky-left-airplane/ Analyze the hCaptcha task of identifying left-flying airplanes, introducing an implementation approach that uses background complexity, image color, and directional features to determine if an airplane is in the sky. hCaptcha Vertical River Recognition: Image Features and Implementation Approach https://blog.bj-yan.top/en/p/blog-hcaptcha-vertical-river/ Wed, 02 Mar 2022 10:32:15 +0800 https://blog.bj-yan.top/en/p/blog-hcaptcha-vertical-river/ Analyze the hCaptcha vertical river image task, document observations of image features, recognition methods, and solution iterations, and discuss the impact of generated images on CAPTCHA recognition.