July 2017
Intermediate to advanced
254 pages
6h 29m
English
Content preview from Mastering Machine Learning with scikit-learn - Second Edition
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Classifying characters in natural images
Now let's try a more challenging problem. We will classify alphanumeric characters in natural images. The Chars74K dataset contains more than 74,000 images of the digits 0 through 9 and the characters for both cases of the English alphabet. The following are three examples of images of the lowercase letter z.. Chars74K can be downloaded from http://www.ee.surrey.ac.uk/CVSSP/demos/chars74k/.
Several types of images comprise the collection. We will use 7,705 images of characters that were extracted from photographs of street scenes taken in Bangalore, India. In contrast to MNIST, the images in this portion ...
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