{
  "id": 407547,
  "title": "Is the focal length of each camera the same?",
  "url": "/competitions/image-matching-challenge-2023/discussion/407547",
  "author_name": "Yanbing Zhang",
  "post_date": "2023-05-07T01:35:31.179000",
  "votes": 1,
  "comment_count": 5,
  "views": 0,
  "content": "<p>Hello everyone! I have a question. In the same scene, is the focal length of each camera the same? If not, is the calculated R, T meaningless?</p>",
  "messages": [
    {
      "id": 2248542,
      "postDate": "2023-05-07T01:35:31.180Z",
      "content": "<p>Hello everyone! I have a question. In the same scene, is the focal length of each camera the same? If not, is the calculated R, T meaningless?</p>",
      "rawMarkdown": "Hello everyone! I have a question. In the same scene, is the focal length of each camera the same? If not, is the calculated R, T meaningless?",
      "votes": 1
    },
    {
      "id": 2248813,
      "postDate": "2023-05-07T08:10:07.847Z",
      "content": "<p>Hi~ this is my <a href=\"https://www.kaggle.com/code/yoyobar/get-camears-parameter/notebook\" target=\"_blank\">notebook</a> which is about your question and get cameras parameter from each scene. most of camera parameters are different in the same scene, but some are the same.</p>",
      "rawMarkdown": "Hi~ this is my [notebook](https://www.kaggle.com/code/yoyobar/get-camears-parameter/notebook) which is about your question and get cameras parameter from each scene. most of camera parameters are different in the same scene, but some are the same.",
      "replies": [
        {
          "id": 2248828,
          "postDate": "2023-05-07T08:28:53.757Z",
          "rawMarkdown": "",
          "isDeleted": true
        },
        {
          "id": 2248835,
          "postDate": "2023-05-07T08:31:17Z",
          "rawMarkdown": "",
          "isDeleted": true
        },
        {
          "id": 2248836,
          "postDate": "2023-05-07T08:33:35.973Z",
          "rawMarkdown": "",
          "isDeleted": true
        },
        {
          "id": 2248838,
          "postDate": "2023-05-07T08:34:56.823Z",
          "content": "<p>Thanks!<br>\nIt seems that I need to predict the focal length. Because I get the pseudo focal length from \"imc-2023-submission-example\"</p>",
          "rawMarkdown": "Thanks!\nIt seems that I need to predict the focal length. Because I get the pseudo focal length from \"imc-2023-submission-example\""
        }
      ]
    }
  ],
  "comments": [
    {
      "id": 2248813,
      "author_name": "yoyobar",
      "author_url": "",
      "post_date": "2023-05-07T08:10:07.847000",
      "content": "<p>Hi~ this is my <a href=\"https://www.kaggle.com/code/yoyobar/get-camears-parameter/notebook\" target=\"_blank\">notebook</a> which is about your question and get cameras parameter from each scene. most of camera parameters are different in the same scene, but some are the same.</p>",
      "votes": 0,
      "replies": [
        {
          "id": 2248828,
          "author_name": "",
          "author_url": "",
          "post_date": "2023-05-07T08:28:53.757000",
          "content": "",
          "votes": 0,
          "replies": []
        },
        {
          "id": 2248835,
          "author_name": "",
          "author_url": "",
          "post_date": "2023-05-07T08:31:17",
          "content": "",
          "votes": 0,
          "replies": []
        },
        {
          "id": 2248836,
          "author_name": "",
          "author_url": "",
          "post_date": "2023-05-07T08:33:35.973000",
          "content": "",
          "votes": 0,
          "replies": []
        },
        {
          "id": 2248838,
          "author_name": "Yanbing Zhang",
          "author_url": "",
          "post_date": "2023-05-07T08:34:56.823000",
          "content": "<p>Thanks!<br>\nIt seems that I need to predict the focal length. Because I get the pseudo focal length from \"imc-2023-submission-example\"</p>",
          "votes": 0,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "2248542": "Hello everyone! I have a question. In the same scene, is the focal length of each camera the same? If not, is the calculated R, T meaningless?",
    "2248813": "Hi~ this is my [notebook](https://www.kaggle.com/code/yoyobar/get-camears-parameter/notebook) which is about your question and get cameras parameter from each scene. most of camera parameters are different in the same scene, but some are the same."
  }
}