An Image Stitching Algorithm
Based On
SURF And RANSAC Methods
Main Points
•SURF algorithm
•RANSAC method for obtaining a
homography
•Image blending process
Image Analysis Applications
• Medicine (MRI scans)
• Microscopy
• Remote sensing (detecting intruders in a
house, and producing land cover/land use
maps)
• Astronomy (calculating the size of a
planet)
• Materials science
• Many others 
SURF Algorithm
SURF finds interest points and builds their
descriptors
After finding features they are matched
between different images
SURF Algorithm
RANdom SAmple Consensus
Simple 2D example
RANSAC is used to obtain a homography to project
a set of images onto one plane
RANdom SAmple Consensus
Image Blending
Now we just need to unite our images
Image Stitching
•SURF algorithm finds image features
•RANSAC obtains a projective
transformation
•Projected images blended into a
single image
An image stitching algorithm
on basis of
SURF and RANSAC methods

Surf and ransac