Evaluation benchmark for zero-order term removal in digital holography
Year: 2026
Type: software
Abstract: Code, holograms and configurations accompanying the paper "Evaluation benchmark for zero-order term removal methods in digital holography". The zero-order term is present in every off-axis digital hologram, and many methods exist to suppress it, but they are evaluated on incompatible criteria and cannot be ranked against one another. This record contains the data and software for a benchmark that addresses this, using a measurement protocol whose evaluation regions follow from the spatial-frequency structure of the recording and require no free parameters. Contents Three optically recorded off-axis holograms (coin, die and resolution target), each with its recording parameters: wavelength 532 nm, pixel pitch 1.67 µm, reconstruction distances 0.32–0.42 m, sensor 3840 × 2748 px. Per-hologram configurations: the object position and extent from which the carrier frequency and object bandwidth are derived, and the four regions of interest used for the image-plane measurements. Python implementations of eleven single-shot suppression methods spanning constant subtraction, parametric background fits, convolution-based background estimation, spectral filtering, and decomposition-based approaches. The evaluation pipeline, including the per-hologram parameter tuning procedure and the transfer-function analysis. The complete results as produced: all metrics for every method on every hologram, and the parameter values selected during tuning.
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7204459694