CODE: Cross-Modal Calibration and Dynamic Suppression for Open World Object Detection

• URL: http://arxiv.org/abs/2608.27214v1
• Date: Thu, 27 Aug 2026 14:56:19 GMT
• Title: CODE: Cross-Modal Calibration and Dynamic Suppression for Open World Object Detection
• Abstract summary: Open World Object Detection (OWOD) built on multimodal foundation models often suffers from semantic ambiguity caused by unidirectional text-to-vision matching.<n>We propose CODE (Cross-Modal and Dynamic Suppression), a unified inference-time framework with three complementary components.
• Score: 8.581460828563534
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Open World Object Detection (OWOD) built on multimodal foundation models often suffers from semantic ambiguity caused by unidirectional text-to-vision matching, while rigid outlier penalties may over-suppress unknown objects near known-class decision boundaries. We propose CODE (Cross-Modal Calibration and Dynamic Suppression), a unified inference-time framework with three complementary components. Cross-Modal Joint Confidence Calibration injects global visual prototypes to calibrate text-driven known-class predictions. Uncertainty-Guided Universal Objectness Enhancement measures classification hesitation from local visual responses to strengthen potential unknown objects. Dynamic Outlier Suppression via Confidence Margin replaces rigid suppression with a margin-aware adjustment that preserves ambiguous out-of-distribution instances. Experiments on the Real-World Detection benchmark demonstrate that, with the OWL-ViT L/14 backbone, CODE achieves 21.7 U-mAP and 40.8 K-mAP in Task 1, surpassing the previous state of the art by 2.6 and 2.3 points, respectively.

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