{"abstract":"Boxes entirely outside the image or of zero width are returned as degenerate rectangles.","category":"Image orientation metadata","checks":8,"contract":"Map a half-open face/crop region [x, y, width, height] given in stored pixel space of an image of size [w, h] into displayed space for orientation tag 1..8. The region is first clipped to the stored image; an empty clipped region returns None, and an unknown tag returns None. Mirroring a half-open interval [a, b) over extent e gives [e-b, e-a); tags 5..8 exchange axes after the flips.","contract_signature":"size, tag, box","evaluation_group":"w2-image-orientation-metadata-region-box","failed_approach":"Requiring both axes to be empty keeps regions that are empty along only one axis.","family":"w2-image-orientation-metadata-region-box-empty-region","id":"FA-78896","implementations":{"attempt":{"sha256":"37ffe3b65828aaabc6ea231efe828800464bfbc1f0aa6de13a8f563a6fd98e89","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(size, tag, box):\n    w, h = size\n    x0, y0, bw, bh = box\n    x1 = min(x0 + bw, w)\n    y1 = min(y0 + bh, h)\n    x0 = max(x0, 0)\n    y0 = max(y0, 0)\n    if x1 <= x0 and y1 <= y0:\n        return None\n    table = {1: (0, 0, 0), 2: (1, 0, 0), 3: (1, 1, 0), 4: (0, 1, 0), 5: (0, 0, 1), 6: (0, 1, 1), 7: (1, 1, 1), 8: (1, 0, 1)}\n    if tag not in table:\n        return None\n    fx, fy, tr = table[tag]\n    if fx:\n        x0, x1 = w - x1, w - x0\n    if fy:\n        y0, y1 = h - y1, h - y0\n    if tr:\n        x0, y0, x1, y1 = y0, x0, y1, x1\n    return [x0, y0, x1 - x0, y1 - y0]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[[([2, 4], 8, [2, 1, 3, 3]), None], [([7, 5], 1, [6, -1, 4, 0]), None], [([4, 6], 6, [4, 2, 3, 5]), None], [([5, 1], 6, [-3, -2, 5, 4]), [0, 0, 1, 2]], [([3, 2], 9, [2, 6, 3, 4]), None], [([2, 7], 0, [-2, 5, 5, 3]), None], [([1, 3], 5, [0, 2, 1, 3]), [2, 0, 1, 1]], [([2, 4], 7, [1, -3, 3, 3]), None]], [[([5, 7], 5, [-1, -1, 1, 5]), None], [([6, 4], 7, [4, 3, 0, 4]), None], [([6, 7], 5, [6, 1, 5, 5]), None], [([3, 5], 0, [-3, -2, 2, 4]), None], [([4, 1], 3, [6, 3, 2, 4]), None], [([5, 5], 6, [6, 3, 5, 0]), None], [([4, 5], 1, [1, 2, 5, 4]), [1, 2, 3, 3]], [([4, 4], 5, [4, 3, 2, 4]), None]], [[([6, 1], 2, [2, 1, 3, 0]), None], [([5, 3], 6, [-3, 3, 4, 1]), None], [([1, 5], 9, [2, 3, 4, 4]), None], [([1, 2], 9, [-2, 1, 1, 3]), None], [([6, 2], 0, [5, 1, 3, 3]), None], [([3, 2], 5, [5, 6, 1, 3]), None], [([4, 5], 5, [-1, 1, 3, 5]), [1, 0, 4, 2]], [([4, 5], 8, [2, -2, 0, 2]), None]], [[([3, 7], 8, [3, 3, 4, 1]), None], [([7, 7], 2, [-2, 0, 0, 4]), None], [([6, 5], 5, [4, -2, 2, 2]), None], [([5, 1], 8, [1, 4, 0, 2]), None], [([7, 5], 8, [0, 4, 5, 5]), [4, 2, 1, 5]], [([3, 4], 6, [0, 3, 4, 4]), [0, 0, 1, 3]], [([4, 5], 7, [4, 6, 3, 3]), None], [([5, 1], 8, [-2, 1, 4, 3]), None]], [[([3, 2], 8, [-2, -1, 5, 1]), None], [([7, 2], 5, [6, 2, 2, 4]), None], [([4, 4], 8, [3, -3, 4, 3]), None], [([4, 1], 0, [2, 4, 5, 5]), None], [([6, 3], 7, [0, -3, 1, 4]), [2, 5, 1, 1]], [([7, 1], 7, [0, -2, 5, 4]), [0, 2, 1, 5]], [([4, 2], 7, [0, -1, 5, 4]), [0, 0, 2, 4]], [([4, 5], 6, [1, 3, 0, 5]), None]]]\nlabels = [\"regression: empty clipped region test\", \"repair trap\", \"combined fault\", \"control\", \"control\", \"boundary\", \"boundary\", \"control\"]\nfor i, (args, expected) in enumerate(fixtures[N-1]):\n    check(\"%s %d\" % (labels[i % len(labels)], i), solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"2825213337d82b9c3450d055737dbbd073bc56d207a541884b456adfc921547c","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(size, tag, box):\n    w, h = size\n    x0, y0, bw, bh = box\n    x1 = min(x0 + bw, w)\n    y1 = min(y0 + bh, h)\n    x0 = max(x0, 0)\n    y0 = max(y0, 0)\n    if x1 < x0 or y1 < y0:\n        return None\n    table = {1: (0, 0, 0), 2: (1, 0, 0), 3: (1, 1, 0), 4: (0, 1, 0), 5: (0, 0, 1), 6: (0, 1, 1), 7: (1, 1, 1), 8: (1, 0, 1)}\n    if tag not in table:\n        return None\n    fx, fy, tr = table[tag]\n    if fx:\n        x0, x1 = w - x1, w - x0\n    if fy:\n        y0, y1 = h - y1, h - y0\n    if tr:\n        x0, y0, x1, y1 = y0, x0, y1, x1\n    return [x0, y0, x1 - x0, y1 - y0]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[[([2, 4], 8, [2, 1, 3, 3]), None], [([7, 5], 1, [6, -1, 4, 0]), None], [([4, 6], 6, [4, 2, 3, 5]), None], [([5, 1], 6, [-3, -2, 5, 4]), [0, 0, 1, 2]], [([3, 2], 9, [2, 6, 3, 4]), None], [([2, 7], 0, [-2, 5, 5, 3]), None], [([1, 3], 5, [0, 2, 1, 3]), [2, 0, 1, 1]], [([2, 4], 7, [1, -3, 3, 3]), None]], [[([5, 7], 5, [-1, -1, 1, 5]), None], [([6, 4], 7, [4, 3, 0, 4]), None], [([6, 7], 5, [6, 1, 5, 5]), None], [([3, 5], 0, [-3, -2, 2, 4]), None], [([4, 1], 3, [6, 3, 2, 4]), None], [([5, 5], 6, [6, 3, 5, 0]), None], [([4, 5], 1, [1, 2, 5, 4]), [1, 2, 3, 3]], [([4, 4], 5, [4, 3, 2, 4]), None]], [[([6, 1], 2, [2, 1, 3, 0]), None], [([5, 3], 6, [-3, 3, 4, 1]), None], [([1, 5], 9, [2, 3, 4, 4]), None], [([1, 2], 9, [-2, 1, 1, 3]), None], [([6, 2], 0, [5, 1, 3, 3]), None], [([3, 2], 5, [5, 6, 1, 3]), None], [([4, 5], 5, [-1, 1, 3, 5]), [1, 0, 4, 2]], [([4, 5], 8, [2, -2, 0, 2]), None]], [[([3, 7], 8, [3, 3, 4, 1]), None], [([7, 7], 2, [-2, 0, 0, 4]), None], [([6, 5], 5, [4, -2, 2, 2]), None], [([5, 1], 8, [1, 4, 0, 2]), None], [([7, 5], 8, [0, 4, 5, 5]), [4, 2, 1, 5]], [([3, 4], 6, [0, 3, 4, 4]), [0, 0, 1, 3]], [([4, 5], 7, [4, 6, 3, 3]), None], [([5, 1], 8, [-2, 1, 4, 3]), None]], [[([3, 2], 8, [-2, -1, 5, 1]), None], [([7, 2], 5, [6, 2, 2, 4]), None], [([4, 4], 8, [3, -3, 4, 3]), None], [([4, 1], 0, [2, 4, 5, 5]), None], [([6, 3], 7, [0, -3, 1, 4]), [2, 5, 1, 1]], [([7, 1], 7, [0, -2, 5, 4]), [0, 2, 1, 5]], [([4, 2], 7, [0, -1, 5, 4]), [0, 0, 2, 4]], [([4, 5], 6, [1, 3, 0, 5]), None]]]\nlabels = [\"regression: empty clipped region test\", \"repair trap\", \"combined fault\", \"control\", \"control\", \"boundary\", \"boundary\", \"control\"]\nfor i, (args, expected) in enumerate(fixtures[N-1]):\n    check(\"%s %d\" % (labels[i % len(labels)], i), solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic bounded teaching model with a stipulated contract; it makes no claim of conformance to any published specification. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-image-orientation-metadata-region-box-empty-region","generated_at":"2026-09-29T14:49:39.587706+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Camera, phone and scanner images carry an orientation hint separately from the stored pixels; galleries, thumbnailers, editors and upload pipelines must interpret it consistently or photos appear sideways, mirrored or doubly rotated.","root_cause":"The emptiness test uses strict comparisons, so a zero-width half-open interval is kept.","sha256":"6c05c027ea2ce16916c696eaa7c744acc15a46e7d03040c3a5aac35057863135","title":"Zero-area regions survive orientation mapping · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":41.766,"exit_code":1,"observations":[{"actual":[1,0,3,0],"check":"regression: empty clipped region test 0","expected":null,"passed":false},{"actual":[6,0,1,-1],"check":"repair trap 1","expected":null,"passed":false},{"actual":[0,4,4,0],"check":"combined fault 2","expected":null,"passed":false},{"actual":[0,0,1,2],"check":"control 3","expected":[0,0,1,2],"passed":true},{"actual":null,"check":"control 4","expected":null,"passed":true},{"actual":null,"check":"boundary 5","expected":null,"passed":true},{"actual":[2,0,1,1],"check":"boundary 6","expected":[2,0,1,1],"passed":true},{"actual":[4,0,0,1],"check":"control 7","expected":null,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: empty clipped region test 0\", \"actual\": [1, 0, 3, 0], \"expected\": null, \"passed\": false}, {\"check\": \"repair trap 1\", \"actual\": [6, 0, 1, -1], \"expected\": null, \"passed\": false}, {\"check\": \"combined fault 2\", \"actual\": [0, 4, 4, 0], \"expected\": null, \"passed\": false}, {\"check\": \"control 3\", \"actual\": [0, 0, 1, 2], \"expected\": [0, 0, 1, 2], \"passed\": true}, {\"check\": \"control 4\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"boundary 5\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"boundary 6\", \"actual\": [2, 0, 1, 1], \"expected\": [2, 0, 1, 1], \"passed\": true}, {\"check\": \"control 7\", \"actual\": [4, 0, 0, 1], \"expected\": null, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.188,"exit_code":1,"observations":[{"actual":[1,0,3,0],"check":"regression: empty clipped region test 0","expected":null,"passed":false},{"actual":null,"check":"repair trap 1","expected":null,"passed":true},{"actual":[0,4,4,0],"check":"combined fault 2","expected":null,"passed":false},{"actual":[0,0,1,2],"check":"control 3","expected":[0,0,1,2],"passed":true},{"actual":null,"check":"control 4","expected":null,"passed":true},{"actual":null,"check":"boundary 5","expected":null,"passed":true},{"actual":[2,0,1,1],"check":"boundary 6","expected":[2,0,1,1],"passed":true},{"actual":[4,0,0,1],"check":"control 7","expected":null,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: empty clipped region test 0\", \"actual\": [1, 0, 3, 0], \"expected\": null, \"passed\": false}, {\"check\": \"repair trap 1\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"combined fault 2\", \"actual\": [0, 4, 4, 0], \"expected\": null, \"passed\": false}, {\"check\": \"control 3\", \"actual\": [0, 0, 1, 2], \"expected\": [0, 0, 1, 2], \"passed\": true}, {\"check\": \"control 4\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"boundary 5\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"boundary 6\", \"actual\": [2, 0, 1, 1], \"expected\": [2, 0, 1, 1], \"passed\": true}, {\"check\": \"control 7\", \"actual\": [4, 0, 0, 1], \"expected\": null, \"passed\": false}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}