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bioRxiv · 10.64898/2026.05.04.722591

Striping artifact removal in VisiumHD data through nuclear counts modeling

Malsot, P.·Londschien, M.·Boeva, V.·Raetsch, G.
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Abstract

Motivation10x Genomics VisiumHD enables spatial transcriptomics at 2 m x 2 m resolution but exhibits slide-specific, non-periodic striping artifacts due to lane-width variability. These multiplicative row/column effects distort bin total counts and can bias downstream analyses. The state-of-the-art destriping approach is the normalization procedure used as a preprocessing step in bin2cell; it applies sequential high-quantile row- then column-wise normalization, which is asymmetric and can introduce edge effects/macro-stripes and distortions of large-scale total-count structure. ResultsWe propose a statistical destriping approach that leverages nuclei segmentation from the coregistered H&E image. Assuming transcript abundance is constant within each nucleus, we model bin counts with a negative binomial distribution whose mean is a product of a nucleus-specific concentration and row- and column-specific stripe-factors reflecting lane-width variation. We fit all parameters in a generalized linear modeling framework with cross-validated regularization on stripe-factors and iterative dispersion estimation, and use the fitted parameters to correct the observed counts into a destriped image. On synthetic data with known ground truth, our method improves stripe-factor estimation accuracy and reduces error in corrected counts relative to bin2cell and bin2cell-derived baselines. Across four public VisiumHD slides, it consistently lowers striping intensity while substantially better preserving biological signal present in the large-scale global count structure and avoiding the artifacts introduced by other methods. Availability and ImplementationAll source code and links to publicly available data used for this study are available at https://github.com/paolamalsot/destriping-GLM. Contactpaola.malsot@inf.ethz.ch, raetsch@inf.ethz.ch NoteThis manuscript extends the version submitted to Intelligent Systems for Molecular Biology (ISMB) 2026 by describing a new optimization algorithm that yields an approximately tenfold speedup. All plots and benchmarks in this manuscript use the updated implementation.

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Malsot, P., Londschien, M., Boeva, V., Raetsch, G.. 2026-05-07. Striping artifact removal in VisiumHD data through nuclear counts modeling. https://doi.org/10.64898/2026.05.04.722591

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