{
  "id": 130300,
  "title": "Large re-projection error???",
  "url": "/competitions/pku-autonomous-driving/discussion/130300",
  "author_name": "",
  "post_date": "2020-02-13T09:56:18.578740Z",
  "votes": null,
  "comment_count": 2,
  "views": 0,
  "content": "<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F4139358%2F3498353863298b4459c114efe8372dbe%2Finaccurate_annotation_apollo.png?generation=1581587761540873&amp;alt=media\" alt=\"\">\nI tried to visualize the cars by projecting the 3D vertices into the 2D images but found many instances having large error like the attached picture.</p>",
  "messages": [
    {
      "id": "744923",
      "postDate": "02/13/2020 09:56:18",
      "content": "<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F4139358%2F3498353863298b4459c114efe8372dbe%2Finaccurate_annotation_apollo.png?generation=1581587761540873&amp;alt=media\" alt=\"\">\nI tried to visualize the cars by projecting the 3D vertices into the 2D images but found many instances having large error like the attached picture.</p>",
      "rawMarkdown": "![](https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F4139358%2F3498353863298b4459c114efe8372dbe%2Finaccurate_annotation_apollo.png?generation=1581587761540873&amp;alt=media)\nI tried to visualize the cars by projecting the 3D vertices into the 2D images but found many instances having large error like the attached picture.",
      "votes": null
    },
    {
      "id": "744926",
      "postDate": "02/13/2020 09:57:58",
      "content": "<p>I used the provided scripts to transform the vertices into camera coordinate, and then project using the intrinsic parameters.</p>",
      "rawMarkdown": "I used the provided scripts to transform the vertices into camera coordinate, and then project using the intrinsic parameters.",
      "votes": null
    },
    {
      "id": "744928",
      "postDate": "02/13/2020 09:58:37",
      "content": "<p>I found a lot of samples like this in the dataset, is my projection wrong or the 3D pose label inaccurate?</p>",
      "rawMarkdown": "I found a lot of samples like this in the dataset, is my projection wrong or the 3D pose label inaccurate?",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 744926,
      "author_name": "nicholasliust",
      "author_url": "",
      "post_date": "02/13/2020 09:57:58",
      "content": "<p>I used the provided scripts to transform the vertices into camera coordinate, and then project using the intrinsic parameters.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 744928,
      "author_name": "nicholasliust",
      "author_url": "",
      "post_date": "02/13/2020 09:58:37",
      "content": "<p>I found a lot of samples like this in the dataset, is my projection wrong or the 3D pose label inaccurate?</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "744923": "![](https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F4139358%2F3498353863298b4459c114efe8372dbe%2Finaccurate_annotation_apollo.png?generation=1581587761540873&amp;alt=media)\nI tried to visualize the cars by projecting the 3D vertices into the 2D images but found many instances having large error like the attached picture.",
    "744926": "I used the provided scripts to transform the vertices into camera coordinate, and then project using the intrinsic parameters.",
    "744928": "I found a lot of samples like this in the dataset, is my projection wrong or the 3D pose label inaccurate?"
  },
  "source": "meta"
}