Captcha Recognition AI Model Training Guide

The Proxy IP Playbook That CAPTCHA AIs Must Know

The biggest headache of doing CAPTCHA recognition model is that you can't get enough training data to brush CAPTCHA directly on the website, which will definitely be blocked in less than half an hour.Dynamic Proxy IPTo play guerrilla warfare - ipipgo's dynamic residential IP pool has been tested to be able to carry 300 consecutive requests without being pulled black, much more reliable than those server room IPs on the market.

How to choose dynamic vs static IP

Don't listen to those tutorials blindly fooled with static IP, the real scenario is a fixed IP is a living target. I'll show you a comparison table and you'll understand:

Here's the kicker: training a CAPTCHA model must be done withDynamic Residential IPipipgo's IP pool every 15 minutes to automatically change a batch, perfect simulation of real user behavior, pro-test catch an e-commerce platform CAPTCHA gallery success rate from 23% directly soared to 81%.

Data collection practical three axes

1. Request headers should be out of orderDon't use the default header of the requests library, and randomize the order of User-Agent and Accept parameters. Remember to use ipipgo's browser fingerprinting simulation function, otherwise it will be recognized in minutes!

2. Click track should be humanized: Don't make your mouse movements a regular bezier curve, add some random jitter. When using selenium, 0.3-1.2 seconds between each action is the most natural.

3. IP switching to card CDFor the same target website, it is recommended to change IP every 20 times. ipipgo's API supports automatic switching by number of times, which is better than timed switching.

A Guide to Avoiding Pitfalls in Model Training

Never take a public dataset directly! Nowadays, website CAPTCHAs come withEnvironmental testingThe most important thing is that the same CAPTCHA image is returned by a payment platform when accessed with local IP and proxy IP, but the image is returned by local IP and proxy IP. The most pitiful thing I have encountered is a payment platform, the same CAPTCHA image, when accessed with local IP and proxy IP the returned image is not the same!

Recommended to add to trainingIP Characterization DimensionThe geographic location and carrier type of the proxy IP are used as model input parameters. It is measured that after adding IP features, the model improves the accuracy by 19% on the cross-border CAPTCHA recognition task.

Frequently Asked Questions QA

Q: What should I do if my proxy IP is always blocked?
A: Eighty percent of them are using an inferior IP pool. Change ipipgo's dynamic residential IP and remember to turn on theirRequest frequency controlFunctionality. Don't swipe like a rash.

Q: How much training data should be enough?
A: Ordinary digital CAPTCHA preparation of 50,000 sheets to start with, with twisted deformation of the get 200,000 sheets. With ipipgo's distributed collection program, you can get 200,000 pieces of high quality data in three days!

Q: Do I need to buy my own server?
A: Don't! ipipgo provides cloud IP scheduling services, directly on their servers to run collection scripts, save yourself from tossing anti-climbing confrontation. Once a customer did not believe in evil, their own computer room was paralyzed three times a day...

Why ipipgo?

This line of water is too deep, a lot of proxy service providers are actually second-hand dealers. ipipgo's self-managed IP pool cover237 cities, supporting such niche lines as the three major carriers + Radio and Television Networks + Great Wall Broadband. The best part is theirIntelligent RoutingIt can automatically select the nearest exit IP to the target website, and the collection speed is more than 3 times faster than ordinary proxy.

Recently, I have been helping a courier company to train a face sheet recognition model, and I have been using their agent to collect 12 hours of continuous collection without interruption. Brothers who need to do CAPTCHA recognition, go to the official website to get a trial package, remember to select theDynamic Residential IP + Intelligent Routingof the combo package and save half the money than buying them individually.