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Learn OpenCV 4 by Building Projects - Second Edition by Prateek Joshi, Vinicius G. Mendonca, David Millan Escriva

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Shape analysis

The notion of shape is crucial in computer vision. We analyze visual data by recognizing various different shapes in the image. This is actually an important step in many algorithms.

Let's say you are trying to identify a particular logo in an image. You know that it can appear in various shapes, orientations, and sizes. One good way to get started is to quantify the characteristics of the shape of the object.

The shape module provides all the algorithms required to extract different shapes, measure similarity between them, transform the shapes of objects, and more.

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