Feature detection and matching

1. What is feature detection and matching?
2. What do you mean by feature detection?
3. What is feature based matching?

What is feature detection and matching?

Feature matching refers to finding corresponding features from two similar images based on a search distance algorithm. One of the images is considered the source and the other as target, and the feature matching technique is used to either find or derive and transfer attributes from source to target image.

What do you mean by feature detection?

Feature detection is a low-level image processing operation. That is, it is usually performed as the first operation on an image, and examines every pixel to see if there is a feature present at that pixel.

What is feature based matching?

1. The process for the comparison of two sets of keypoints coming from two different images or video frames. The process compares the description of each keypoint of the first image (or frame) with each keypoint of the second image (or frame). A rank algorithm establishes a list of the best matching between them.