5. Focusing on the Interesting 2D Features

Descriptor matchers

DescriptorMatcher is an abstract base class to match keypoint descriptors that, as happens with DescriptorExtractor, make programs more flexible than using matchers directly. With the Ptr<DescriptorMatcher> DescriptorMatcher::create(const string& descriptorMatcherType) function, we can create a descriptor matcher of the desired type. The following are the supported types:

BruteForce-L1: This is used for float descriptors. It uses L1 distance and is efficient and fast.
BruteForce: This is used for float descriptors. It uses L2 distance and can be better than L1, but it needs more CPU usage.
BruteForce-SL2: This is used for float descriptors and avoids square root computation from L2, which requires high CPU usage.
BruteForce-Hamming: This is used for binary descriptors and calculates the Hamming distance between the compared descriptors.
BruteForce-Hamming(2): This is used for binary descriptors (2 bits version).
FlannBased: This is used for float descriptors...

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OpenCV Essentials

By : Suarez

OpenCV Essentials

By: Suarez

Overview of this book

Descriptor matchers

OpenCV Essentials

By : Suarez

OpenCV Essentials

By: Suarez

Overview of this book

Descriptor matchers

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