The LGIF Model: A Highly Significant Local Region Active Contour Model

This repository contains MATLAB source code for "Active contours driven by local and global intensity fitting energy with application to brain MR image segmentation" (commonly known as the LGIF model). The LGIF model represents a crucial advancement in local region active contour models by combining the strengths of both the Chan-Vese (CV) model and Local Binary Fitting (LBF) model. The implementation includes key functions for energy minimization, level set evolution, and intensity fitting operations.