libsift 1.8 review
Downloadlibsift is an algorithm to identify and locate interesting points within an image
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libsift is an algorithm to identify and locate interesting points within an image. For all such points, a descriptive signature is extracted.
The signatures can be stored and matched among multiple images, allowing for a large number of interesting applications, such as aligning overlapping images and identifying objects or motion within image sequences.
libsift is used by the autopano-sift program to create panorama images.
This library is a 100% C# implementation of the SIFT algorithm ("Scale-Invariant Feature Transform") and additional matching algorithms. The SIFT algorithm is an image feature location and extraction algorithm which provides the following key advantages over similar algorithms:
Combined feature location and extraction algorithm.
The keypoint locations are more precise and repeatable, because SIFT uses subpixel localization and multiple scale keypoint identification
The descriptors are highly distinctive. For example, I tested with up to 300,000 keypoints while matching a large 60 picture panorama and it did not have a single invalid match.
The feature vectors can be efficiently correlated using probabilistic algorithms like Best-Bin-First kd-tree search.
What's New in This Release:
A serious bug in the Gaussian sigma computation and a bug in the DoG scale handling were fixed.
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