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name: sr3_iterative_sampler description: Apply the SR3 reverse-chain update from Gaussian noise to a refined high-resolution image. This reusable skill supports bounded SR3 recovery experiments.

sr3_iterative_sampler

Use this skill for SR3 proxy recovery when implementing iterative_sampler. Inputs are tiny numeric arrays or metadata; outputs are deterministic logs or metrics. Workflow follows SR3 paper equations for degradation, noising, denoising loss, reverse refinement, or evaluation as appropriate. Validate with validate_skill_tree.py --run-tests. Limitations: not a full SR3 U-Net implementation and not a substitute for FFHQ/ImageNet-scale training.