# Clean the background noise, if color != white, then set to black. įrom PIL import Image def ocr( im, threshold = 200, alphabet = '0123456789abcdef'): Thus, we need 5 letters with maximum ordered by. The result is the CAPTCHA text.īe the distance of the image, with the letter in position Then sort by score, take the top five results (our captcha is five letters) and finally sort by position. Then, store for each letter the position where the maximum score found. Thus for each position we have a score of how much the letter (mask) fits the letter behind it.

Move each letter across the image and take the difference of the pixels for each position and sum them. So, now we have the image almost cleared and some letters to play with. Here is the example after the filtering (cropping also applied). We turned the image to greyscale, then used a threshold to remove some of the noise. After playing with several techniques we finally ended to the following. As you can notice there is some noise which we have to remove (lines and stuff). You have to be very careful so all the letters be aligned properly.

Then, using a simple image editor we cropped all the letters, one by one. To achieve that, first of all we sampled several images so as to be sure that the images we have contains all the 16 letters. The first part was to to extract all the letters. Also, the alphabet is simple lowercase hexadecimal letters. This makes extracting the letters and using them as masks to check each digit, one by one, very easy. In this example we are going to use the following images.įirst of all, a fixed size (monospace) font has been used. Use the force to find something more complex. This is a simple solver for a very specific and easy-to-solve CAPTCHAs like the one proposed here. python solve.Simple CAPTCHA solver in python Disclaimer.Heavily inspired by nonoCAPTCHA, where I was the original maintainer. Many things aren’t taken into consideration yet, such as when you are required to solve another time, if you’ve sent too many requests and lack of proxy support – which will all be implemented at a later date. This project is a work in progress and will continue to receive updates until it’s ready for production use. It’s a very simple script demonstrating how to solve reCAPTCHA v2’s audio section using Playwright.

I’ve decided to introduce this project as a single file on it’s first commit to keep it simple enough for beginners to understand.

Captcha solving bot python