Classifying Images with CNNs
In this section, we will see how to build and train from scratch a CNN for image classification.
The goal is to classify handwritten digits between 0 and 9 with the data from the MNIST database, a large database of handwritten digits commonly used for training various image-processing applications. The MNIST database contains 60,000 training images and 10,000 testing images of handwritten digits and can be downloaded from this website: http://yann.lecun.com/exdb/mnist/.
To read and preprocess images, KNIME Analytics Platform offers a set of dedicated nodes and components, available after installing the KNIME Image Processing Extension.
Tip
The KNIME Image Processing Extension (https://www.knime.com/community/image-processing) allows you to read in more than 140 different format types of images (thanks to the Bio-Formats Application Processing Interface (API)). In addition, it can be used to apply well-known image-processing techniques such as...