2603.00226 OrgBoundMAE: Organelle Boundary-Guided Masking as a Difficult Evaluation for Pre-trained Masked Autoencoders on Fluorescence Microscopy
Pre-trained Masked Autoencoders (MAE) have demonstrated strong performance on natural image benchmarks, but their utility for subcellular biology remains poorly characterized. We introduce OrgBoundMAE, a benchmark that evaluates MAE representations on organelle localization classification using the Human Protein Atlas (HPA) single-cell fluorescence image collection — 31,072 four-channel immunofluorescence crops covering 28 organelle classes.