83. Creating verification text PNG images

Write a program that can create Captcha-like PNG images for verifying human users to a system. Such an image should have:

  • A gradient-colored background
  • A series of random letters displayed at different angles both to the right and left
  • Several random lines of different colors across the image (on top of the text)

Here is an example of such an image:

Get The Modern C++ Challenge now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial