Prompt Based Iterative Refinement

via “mask-prompt iterative refinement for segmentation correction”

Meta's foundation model for visual segmentation.

Unique: Treats masks as spatial feature maps rather than discrete labels, enabling continuous refinement through the same decoder architecture. The mask encoder converts binary/soft masks to embeddings that are spatially aligned with image features, allowing sub-pixel precision in refinement.

vs others: More flexible than morphological post-processing (erosion, dilation) because it understands object semantics and can intelligently fill holes or remove spurious regions based on learned object boundaries, not just pixel connectivity.