{
  "reference": "https://github.com/FoundationVision/UniTok/blob/bb8012e8e8d7be66928bedd80506c56a55ea6305/utils/data.py",
  "reference_function": "build_transforms: preprocess_val",
  "resize_shortest_edge": 256,
  "resize_interpolation": "PIL Lanczos",
  "center_crop": [256, 256],
  "convert_to_rgb": true,
  "to_tensor_scale": "uint8 / 255",
  "normalization": "tensor * 2 - 1",
  "layout": "NCHW",
  "notes": "This describes the native deterministic validation transform, not every downstream MLLM prompt processor."
}