Electron Ptychography
- Each diffraction pattern → non-convex set
- Problem: reconstruct probe P^ and object O^ from diffraction intensities I
ψj(r)Ij(k)=P^(r)×O^(r−Rj)=∣F[ψj(r)]∣2 - Rich literature of reconstruction algorithms:
- "Fourier" projection
- Reconstructed probe and object accurately reproduce measured intensities
- "Overlap" projection
- Reconstructed probe and object are self-consistent with adjacent scanning positions
Interactive Extended Ptychographic Iterative Engine Simulation