Image Alignment Demo with several goodies: Lie algebra, auto differentiation...
Updated 16 Jun 2018
This method neatly demonstrates gradient-based direct image alignment: it fits a a target image to a reference image using a homography.
However, it also includes some great software for use in other projects:
Autodiff - fairly comprehensive auto differentiation class, to dramatically simplify and speed up development of gradient-based optimization.
Lie - Lie algebra class supporting various geometric groups, which also supports auto differentiation.
Ojw_interp2 - Fast mex-based image and gradient sampling, which also supports auto differentiation. Mex this function first by calling "mex ojw_interp2.cpp" in the directory you installed the files from this submission in.
Oliver Woodford (2023). Image Alignment Demo with several goodies: Lie algebra, auto differentiation... (https://www.mathworks.com/matlabcentral/fileexchange/62547-image-alignment-demo-with-several-goodies-lie-algebra-auto-differentiation), MATLAB Central File Exchange. Retrieved .
MATLAB Release Compatibility
Platform CompatibilityWindows macOS Linux
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!Start Hunting!
Discover Live Editor
Create scripts with code, output, and formatted text in a single executable document.