April 2017
Beginner to intermediate
358 pages
9h 30m
English
Content preview from Learning Data Mining with Python - Second Edition
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Better (worse?) CAPTCHAs
URL: http://scikit-image.org/docs/dev/auto_examples/applications/plot_geometric.html
Larger exercise!
The CAPTCHAs we beat in this example were not as complex as those normally used today. You can create more complex variants using a number of techniques as follows:
- Applying different transformations such as the ones in scikit-image (see the preceding link)
- Using different colors and colors that don't translate well to grayscale
- Adding lines or other shapes to the image: http://scikit-image.org/docs/dev/api/skimage.draw.html
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