Threshold transfer for CoRegOVCD’s final mask inference

Determine whether and under what conditions the fixed decision thresholds used in CoRegOVCD’s final mask inference can transfer across datasets, classes, and imaging conditions without dataset-specific tuning, and establish principled strategies for threshold selection if transferability is limited.

Background

CoRegOVCD converts a pooled score map into a binary mask using an 8-bit quantization and a fixed threshold, with thresholds and related decoding hyperparameters fixed per evaluation configuration. While this yields strong results, it remains unclear how well such thresholds generalize across datasets and classes without retuning, prompting the open question of threshold transferability.

References

Prompt robustness, threshold transfer, and efficient multi-concept inference remain open, but the central conclusion is clear: posterior differencing, once properly regularized, provides a stronger foundation for training-free OVCD.

— CoRegOVCD: Consistency-Regularized Open-Vocabulary Change Detection  (2604.02160 - Tang et al., 2 Apr 2026) in Conclusion (final paragraph)

The per-image oracle consumes ground truth and is only a diagnostic; selecting a stable threshold across new image domains remains open.

— Frozen DINO Localizes Image Edits Without a Localizer  (2608.18968 - Kumar et al., 19 Aug 2026) in Section Limitations

The relative contributions of threshold-selection variability, cohort composition, and changes in the score--correctness relation remain unresolved.

— Grounding with Confidence: Controllable Generative Video Temporal Grounding  (2609.39883 - Chen et al., 30 Sep 2026) in Section 3.2, “Threshold selection and transfer”

Refitted on $\tau2$-bench, the cheapest delegation that passed lost \resabs{primaries/C7/jev/delta} points, so we could not show it transfers.

— JevAgentHarness: Benchmarking, Deploying and Training Decision Models That Share Control with LLMs  (2610.21412 - Zhu et al., 15 Oct 2026) in Section 5, subsection “RQ2: Which decisions can be delegated?”