{
  "id": 402978,
  "title": "What are the units of the .tif files? Hounsfield Units?",
  "url": "/competitions/vesuvius-challenge-ink-detection/discussion/402978",
  "author_name": "Thomas Sherk",
  "post_date": "2023-04-20T14:30:17.971000",
  "votes": 1,
  "comment_count": 3,
  "views": 0,
  "content": "<p>I am looking at two of the scrolls and I am seeing a range of values 0 to ~50,000.</p>",
  "messages": [
    {
      "id": 2228747,
      "postDate": "2023-04-20T19:12:13.493Z",
      "content": "<p>They are relative values not aligned to any particular physical unit. I pick a window min/max based on 0.01 and 99.99 percentiles, and then stretch that range to 16-bit unsigned (0-65535).</p>",
      "rawMarkdown": "They are relative values not aligned to any particular physical unit. I pick a window min/max based on 0.01 and 99.99 percentiles, and then stretch that range to 16-bit unsigned (0-65535).",
      "votes": 3,
      "replies": [
        {
          "id": 2229004,
          "postDate": "2023-04-21T02:44:27.533Z",
          "rawMarkdown": "",
          "isDeleted": true,
          "replies": [
            {
              "id": 2234775,
              "postDate": "2023-04-25T13:33:01.110Z",
              "content": "<p>What do you mean by transformed?</p>",
              "rawMarkdown": "What do you mean by transformed?"
            }
          ]
        }
      ]
    },
    {
      "id": 2228415,
      "postDate": "2023-04-20T14:30:17.970Z",
      "content": "<p>I am looking at two of the scrolls and I am seeing a range of values 0 to ~50,000.</p>",
      "rawMarkdown": "I am looking at two of the scrolls and I am seeing a range of values 0 to ~50,000.",
      "votes": 1
    }
  ],
  "comments": [
    {
      "id": 2228747,
      "author_name": "Stephen Parsons",
      "author_url": "",
      "post_date": "2023-04-20T19:12:13.493000",
      "content": "<p>They are relative values not aligned to any particular physical unit. I pick a window min/max based on 0.01 and 99.99 percentiles, and then stretch that range to 16-bit unsigned (0-65535).</p>",
      "votes": 3,
      "replies": [
        {
          "id": 2229004,
          "author_name": "",
          "author_url": "",
          "post_date": "2023-04-21T02:44:27.533000",
          "content": "",
          "votes": 0,
          "replies": [
            {
              "id": 2234775,
              "author_name": "Stephen Parsons",
              "author_url": "",
              "post_date": "2023-04-25T13:33:01.110000",
              "content": "<p>What do you mean by transformed?</p>",
              "votes": 0,
              "replies": []
            }
          ]
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "2228747": "They are relative values not aligned to any particular physical unit. I pick a window min/max based on 0.01 and 99.99 percentiles, and then stretch that range to 16-bit unsigned (0-65535).",
    "2228415": "I am looking at two of the scrolls and I am seeing a range of values 0 to ~50,000."
  }
}