Chapter 8. Detecting Interest Points
In this chapter, we will cover the following recipes:
- Detecting corners in an image
- Detecting features quickly
- Detecting scale-invariant features
- Detecting FAST features at multiple scales
Introduction
In computer vision, the concept of interest points also called keypoints or feature points has been largely used to solve many problems in object recognition, image registration, visual tracking, 3D reconstruction, and more. This concept relies on the idea that instead of looking at the image as a whole (that is, extracting global features), it could be advantageous to select some special points in the image and perform a local analysis on them (that is, extracting local features). This approach works well as long ...
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