OpenCV 3 Computer Vision Application Programming Cookbook - Third Edition

Chapter 9. Describing and Matching Interest Points

In this chapter, we will cover the following recipes:

• Matching local templates
• Describing and matching local intensity patterns
• Matching keypoints with binary descriptors

Introduction

In the previous chapter, we learned how to detect special points in an image with the objective of subsequently performing local image analysis. These keypoints are chosen to be distinctive enough so that if a keypoint is detected on the image of an object, then the same point is expected to be detected in other images depicting the same object. We also described some more sophisticated interest point detectors that can assign a representative scale factor and/or an orientation to a keypoint. As we will see in this chapter, ...