Module callbacks 

Iteration callbacks for progress, checkpoints, diagnostics, and image output. Hooks that observe or control iterative reconstruction.

Implement crate::callbacks::Callback for custom behavior, or use callbacks such as crate::callbacks::CheckpointEvery, DiagnosticRecorder, and crate::callbacks::StopOnPlateau. Callbacks receive a borrowed crate::callbacks::StepContext and return a crate::callbacks::CallbackAction to continue or stop a run.

Structs

CheckpointEvery

Writes resumable JSON checkpoints at a fixed iteration frequency.

CsvLogger

Streams universal iteration history to a CSV file.

ProgressLogger

Prints iteration, objective, and elapsed-time progress to standard error.

SaveImageEvery

Periodically writes reconstructed object amplitude and wrapped phase PNG previews.

SavePupilEvery

Periodically writes recovered pupil amplitude and wrapped phase PNG previews.

SaveResidualsEvery

Periodically saves one signed intensity-residual PNG per measured frame.

StepContext

Borrowed reconstruction snapshot supplied to non-finish callback hooks.

StopOnPlateau

Stops after a configured number of iterations without sufficient objective improvement.

Enums

CallbackAction

Control decision returned by a callback hook.

CallbackHook

Point in runner execution at which a callback can be invoked.

Traits

Callback

Thread-sendable observer or early-stop controller for reconstruction execution.