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{
  "validation_scope": "Same final latent; decoder-only comparison. Source-generation and decoder-only timings have different scopes.",
  "reference": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/outputs/suite/product/native-3.png",
  "native_size": [
    2048,
    2048
  ],
  "crop_xyxy": [
    768,
    768,
    1280,
    1280
  ],
  "heatmap_gain": 8,
  "metric_definition": {
    "psnr": "Full-resolution 8-bit RGB MSE, data range 255; null means infinity",
    "ssim": "scikit-image RGB structural_similarity, channel_axis=-1, data_range=255, default 7x7 window",
    "mae": "Full-resolution mean absolute 8-bit RGB error"
  },
  "rows": [
    {
      "label": "Native BF16 decoder",
      "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/outputs/suite/product/native-3.png",
      "png_sha256": "63684ef8ae148a35ddef02650c6aa30b4843b47c99b06cec2ea3708ef3fc2293",
      "pixel_identical": true,
      "mae_8bit": 0.0,
      "max_error_8bit": 0,
      "psnr_db": null,
      "ssim_rgb": 1.0,
      "timings": {
        "encode_s": 0.09756437502801418,
        "dit_setup_s": 1.1571008330211043,
        "step_0_s": 10.822453290922567,
        "step_1_s": 11.303021250059828,
        "step_2_s": 11.45283200009726,
        "step_3_s": 11.480994417099282,
        "step_4_s": 11.41636574990116,
        "step_5_s": 11.394194666063413,
        "decode_s": 3.528030874906108,
        "total_s": 72.77735170791857
      },
      "steps": [
        0,
        1,
        2,
        3,
        4,
        5
      ],
      "timing_scope": "Fresh end-to-end request"
    },
    {
      "label": "Core ML CPU_AND_GPU, batch 8, contiguous bridge",
      "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/contiguous-b8-CPU_AND_GPU/image.png",
      "png_sha256": "36a7cdad88b12839d1e4cd30384ee60fafffaac52d2ba05e3be409a33a40a50a",
      "pixel_identical": false,
      "mae_8bit": 0.2054581642150879,
      "max_error_8bit": 7,
      "psnr_db": 54.674052201530415,
      "ssim_rgb": 0.9983190643001968,
      "timings": {
        "decode_s": 1.8162069998215884
      },
      "steps": [
        0,
        1,
        2,
        3,
        4,
        5
      ],
      "timing_scope": "One complete decoder pass; model loading excluded"
    }
  ],
  "interpretation": "Pixel similarity to the same seeded trajectory, not a measure of prompt adherence or perceptual quality."
}