Related Experiment Video
Updated: Jun 12, 2026

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
Published on: February 8, 2014
Depth from focus based on combinatorial optimization
1School of Information and Mechatronics, Gwangju Institute of Science and Technology, 261 Cheomdan Gwagiro, Buk-Gu, Gwangju, 500-712, South Korea.
Abstract:
Depth from focus (DFF) is a technique to estimate the depth and 3D shape of an object from a sequence of images obtained at different focus settings. The DFF is presented as a combinatorial optimization problem. After the estimate of the initial depth map solution of an object, the algorithm updates the depth map iteratively from the specially defined neighborhood. The results of the proposed DFF algorithm have shown significant improvements in both the accuracy of the depth map estimation and the computational complexity, with respect to the existing DFF methods.
Related Concept Videos
Methods of Medium Optimization
Optimization Problems
Focusing of Light in the Eye
Maximizing the Directional Derivative
Depth Perception and Spatial Vision
Lagrange Multipliers: Two Constraints

