{
  "original_splits_preserved": true,
  "patient_groups_verified": false,
  "source_group_definition": "Original L suffix from filenames; patient/slide mapping not supplied",
  "groups": {
    "train": [
      "L1",
      "L2",
      "L3",
      "L5",
      "L7"
    ],
    "val": [
      "L4"
    ],
    "test": [
      "L6",
      "L8",
      "L9"
    ]
  },
  "cross_split_filename_groups": [],
  "exact_image_duplicates": [],
  "whole_field_candidates_at_0_98": [],
  "highest_whole_field_similarity": {
    "a": "Image42_L5",
    "b": "Image55_L4",
    "score": 0.1429640990082671,
    "orientation": 5
  },
  "method": "Exact decoded four-channel hashes; 64x64 block means per channel, separately mean-centred and L2-normalized, averaged correlation across all four channels under all eight rotations/reflections. Threshold 0.98. All image pairs checked.",
  "limitations": "Filename L groups are disjoint across supplied partitions but lack a patient/slide mapping. Full-field and SIFT screens can miss partial overlaps or low-texture views; no guarantee of patient independence.",
  "shared_view_candidates": [
    {
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      "inliers": 29,
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      "inliers": 13,
      "affine_left_to_right": [
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          -0.004124855009419051,
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    },
    {
      "left": "Image25_L1",
      "right": "Image26_L1",
      "left_split": "train",
      "right_split": "train",
      "channel": "DIC",
      "good_matches": 465,
      "inliers": 464,
      "affine_left_to_right": [
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    },
    {
      "left": "Image25_L1",
      "right": "Image26_L1",
      "left_split": "train",
      "right_split": "train",
      "channel": "DAPI",
      "good_matches": 360,
      "inliers": 352,
      "affine_left_to_right": [
        [
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        [
          -0.0004390567734548418,
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      ]
    },
    {
      "left": "Image29_L2",
      "right": "Image30_L2",
      "left_split": "train",
      "right_split": "train",
      "channel": "DIC",
      "good_matches": 271,
      "inliers": 269,
      "affine_left_to_right": [
        [
          1.001153378945221,
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        [
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    },
    {
      "left": "Image29_L2",
      "right": "Image30_L2",
      "left_split": "train",
      "right_split": "train",
      "channel": "DAPI",
      "good_matches": 213,
      "inliers": 197,
      "affine_left_to_right": [
        [
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        [
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      ]
    },
    {
      "left": "Image31_L2",
      "right": "Image34_L2",
      "left_split": "train",
      "right_split": "train",
      "channel": "DIC",
      "good_matches": 17,
      "inliers": 17,
      "affine_left_to_right": [
        [
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          -0.009843403713698354,
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    },
    {
      "left": "Image31_L2",
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      "left_split": "train",
      "right_split": "train",
      "channel": "DIC",
      "good_matches": 120,
      "inliers": 116,
      "affine_left_to_right": [
        [
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    },
    {
      "left": "Image34_L2",
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      "left_split": "train",
      "right_split": "train",
      "channel": "DIC",
      "good_matches": 195,
      "inliers": 193,
      "affine_left_to_right": [
        [
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    },
    {
      "left": "Image34_L2",
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      "left_split": "train",
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      "channel": "DAPI",
      "good_matches": 52,
      "inliers": 43,
      "affine_left_to_right": [
        [
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          -0.002387445513919085,
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    },
    {
      "left": "Image39_L5",
      "right": "Image40_L5",
      "left_split": "train",
      "right_split": "train",
      "channel": "DIC",
      "good_matches": 284,
      "inliers": 284,
      "affine_left_to_right": [
        [
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    },
    {
      "left": "Image39_L5",
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      "left_split": "train",
      "right_split": "train",
      "channel": "DAPI",
      "good_matches": 184,
      "inliers": 171,
      "affine_left_to_right": [
        [
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      ]
    },
    {
      "left": "Image48_L1",
      "right": "Image50_L1",
      "left_split": "train",
      "right_split": "train",
      "channel": "DIC",
      "good_matches": 318,
      "inliers": 318,
      "affine_left_to_right": [
        [
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          -6.744031645370617e-05,
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      ]
    },
    {
      "left": "Image48_L1",
      "right": "Image50_L1",
      "left_split": "train",
      "right_split": "train",
      "channel": "DAPI",
      "good_matches": 111,
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      "affine_left_to_right": [
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          -5.6914174064434664e-05,
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    },
    {
      "left": "Image54_L4",
      "right": "Image56_L4",
      "left_split": "val",
      "right_split": "val",
      "channel": "DIC",
      "good_matches": 74,
      "inliers": 73,
      "affine_left_to_right": [
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    },
    {
      "left": "Image54_L4",
      "right": "Image56_L4",
      "left_split": "val",
      "right_split": "val",
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      "good_matches": 72,
      "inliers": 59,
      "affine_left_to_right": [
        [
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    }
  ],
  "shared_view_cross_split_candidates": [],
  "shared_view_method": "All 2,278 image pairs screened separately on DIC and DAPI; display-only 1st/99th percentile scaling, 512x512 images, SIFT up to 1,000 features, distance ratio <0.7, partial affine RANSAC 3px threshold, at least 8 inliers and 50% inlier fraction, scale 0.5-2, convex hull area >=500 pixels on each image. Original stored pixels are unchanged.",
  "shared_view_software": {
    "opencv": "4.14.0",
    "numpy": "2.5.4"
  },
  "unique_shared_view_pairs": [
    {
      "left": "Image13_L1",
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      "channel_order": [
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        "DAPI",
        "CD68",
        "proSPC"
      ]
    },
    {
      "left": "Image13_L1",
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      "aligned_channel_correlation": [
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      "channel_order": [
        "DIC",
        "DAPI",
        "CD68",
        "proSPC"
      ]
    },
    {
      "left": "Image25_L1",
      "right": "Image26_L1",
      "split": "train",
      "overlap_pixels_at_512": 205500,
      "aligned_channel_correlation": [
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      "channel_order": [
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        "DAPI",
        "CD68",
        "proSPC"
      ]
    },
    {
      "left": "Image29_L2",
      "right": "Image30_L2",
      "split": "train",
      "overlap_pixels_at_512": 134903,
      "aligned_channel_correlation": [
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      "channel_order": [
        "DIC",
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        "CD68",
        "proSPC"
      ]
    },
    {
      "left": "Image31_L2",
      "right": "Image34_L2",
      "split": "train",
      "overlap_pixels_at_512": 11250,
      "aligned_channel_correlation": [
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      "channel_order": [
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        "CD68",
        "proSPC"
      ]
    },
    {
      "left": "Image31_L2",
      "right": "Image35_L2",
      "split": "train",
      "overlap_pixels_at_512": 94049,
      "aligned_channel_correlation": [
        0.8544361435743776,
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      ],
      "channel_order": [
        "DIC",
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      ]
    },
    {
      "left": "Image34_L2",
      "right": "Image35_L2",
      "split": "train",
      "overlap_pixels_at_512": 94374,
      "aligned_channel_correlation": [
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        0.9295655341510893
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      "channel_order": [
        "DIC",
        "DAPI",
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      ]
    },
    {
      "left": "Image39_L5",
      "right": "Image40_L5",
      "split": "train",
      "overlap_pixels_at_512": 120137,
      "aligned_channel_correlation": [
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      "channel_order": [
        "DIC",
        "DAPI",
        "CD68",
        "proSPC"
      ]
    },
    {
      "left": "Image48_L1",
      "right": "Image50_L1",
      "split": "train",
      "overlap_pixels_at_512": 152400,
      "aligned_channel_correlation": [
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      "channel_order": [
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        "DAPI",
        "CD68",
        "proSPC"
      ]
    },
    {
      "left": "Image54_L4",
      "right": "Image56_L4",
      "split": "val",
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      "aligned_channel_correlation": [
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      "channel_order": [
        "DIC",
        "DAPI",
        "CD68",
        "proSPC"
      ]
    }
  ],
  "shared_view_alignment_check": "Pairwise partial-affine matrices fitted to SIFT features, original-channel block-averaged 512x512 pixels warped into the partner frame, Pearson correlations on valid shared area. Additional corroboration only; no image pixels changed."
}