PCPS
A diffusion posterior sampling method for low-overlap reconstruction in ptychography. It dynamically adjusts the guidance strength of the prior and measurement consistency with sampling steps, broadly exploring the solution space early and strengthening measurement constraints later, to compensate for the loss of measurement redundancy under low overlap.
Timeline (last 90 days)
The PCPS (progressive coupled posterior sampling) method proposed in the paper was tested on real X-ray ptychography data, covering different scan overlap settings.
PCPS consistently improves reconstruction accuracy under multiple scan overlap conditions, outperforming traditional iterative methods and existing diffusion posterior samplers.
PCPS's advantage is more pronounced in low-overlap (weak measurement constraint) scenarios.
All Facts (3)
PCPS consistently improves reconstruction accuracy under multiple scan overlap conditions, outperforming traditional iterative methods and existing diffusion posterior samplers.
50%UnverifiedPCPS's advantage is more pronounced in low-overlap (weak measurement constraint) scenarios.
50%UnverifiedThe PCPS (progressive coupled posterior sampling) method proposed in the paper was tested on real X-ray ptychography data, covering different scan overlap settings.
50%