A fork from ccap.

More simple to set additional parameters.

$ npm install ccap-dev

• textLen

  Length of captcha text.

  Default to 6.

• noiseType

  Type of additive noise. 0: Gaussian 1: Uniform 2: Salt and Pepper 3: Poisson 4: Rician

  Default to 2.

• noiseSigma

  Amplitude of the random additive noise.

  Default to 1.

You can define captcha like this:

var ccap = require('ccap-dev')({
 width: 120,
 height: 36,
 offset: 24,
 quality: 100,
 fontSize: 24,
 textLen: 5,
 noiseType: 2,
 noiseSigma: 1
});

More usages: ccap

MIT