{
  "id": 110054,
  "title": "Using the semantic map",
  "url": "/competitions/3d-object-detection-for-autonomous-vehicles/discussion/110054",
  "author_name": "",
  "post_date": "2019-09-24T12:22:56.239703300Z",
  "votes": 25,
  "comment_count": 5,
  "views": 0,
  "content": "<p>The dataset comes with a rasterized version of a semantic map, which is a 40k by 40k RGB image.</p>\n\n<p>A week ago I uploaded the reference model, as an example of how to use this semantic map image there is now also a version that uses the map as additional input. In my (limited) experiments I saw an improvement to both precision and recall, especially at larger distances from the ego vehicle.</p>\n\n<p>Unfortunately the current reference model implementation using the semantic map runs out of memory in a GPU kernel (the dataset and model itself already uses a lot of its memory). Instead, you can find the kernel with output in the SDK repository: <a href=\"https://github.com/lyft/nuscenes-devkit/blob/master/notebooks/Reference%20Model.ipynb\">https://github.com/lyft/nuscenes-devkit/blob/master/notebooks/Reference%20Model.ipynb</a> </p>\n\n<p>I hope it helps some of you, happy to answer questions here :) </p>",
  "messages": [
    {
      "id": "633082",
      "postDate": "09/24/2019 12:22:56",
      "content": "<p>The dataset comes with a rasterized version of a semantic map, which is a 40k by 40k RGB image.</p>\n\n<p>A week ago I uploaded the reference model, as an example of how to use this semantic map image there is now also a version that uses the map as additional input. In my (limited) experiments I saw an improvement to both precision and recall, especially at larger distances from the ego vehicle.</p>\n\n<p>Unfortunately the current reference model implementation using the semantic map runs out of memory in a GPU kernel (the dataset and model itself already uses a lot of its memory). Instead, you can find the kernel with output in the SDK repository: <a href=\"https://github.com/lyft/nuscenes-devkit/blob/master/notebooks/Reference%20Model.ipynb\">https://github.com/lyft/nuscenes-devkit/blob/master/notebooks/Reference%20Model.ipynb</a> </p>\n\n<p>I hope it helps some of you, happy to answer questions here :) </p>",
      "rawMarkdown": "The dataset comes with a rasterized version of a semantic map, which is a 40k by 40k RGB image.\n\nA week ago I uploaded the reference model, as an example of how to use this semantic map image there is now also a version that uses the map as additional input. In my (limited) experiments I saw an improvement to both precision and recall, especially at larger distances from the ego vehicle.\n\nUnfortunately the current reference model implementation using the semantic map runs out of memory in a GPU kernel (the dataset and model itself already uses a lot of its memory). Instead, you can find the kernel with output in the SDK repository: https://github.com/lyft/nuscenes-devkit/blob/master/notebooks/Reference%20Model.ipynb \n\nI hope it helps some of you, happy to answer questions here :)",
      "votes": null
    },
    {
      "id": "633119",
      "postDate": "09/24/2019 13:02:04",
      "content": "<p><a href=\"/gzuidhof\">@gzuidhof</a> thank you so much! Do you want people to contribute to the github? I mean, I'd like to finish my best EDA and do a pull request :p </p>",
      "rawMarkdown": "gzuidhof thank you so much! Do you want people to contribute to the github? I mean, I'd like to finish my best EDA and do a pull request :p",
      "votes": null
    },
    {
      "id": "633145",
      "postDate": "09/24/2019 13:38:07",
      "content": "<p>We are very happy to accept contributions! Vladimir is coordinating the SDK and contributions to it.</p>\n\n<p>Although, in my own opinion, Kaggle kernels is probably the best place for EDAs - there is a lot more visibility here, they show up in Google results, and it's easy for people to comment, fork and improve.</p>",
      "rawMarkdown": "We are very happy to accept contributions! Vladimir is coordinating the SDK and contributions to it.\n\nAlthough, in my own opinion, Kaggle kernels is probably the best place for EDAs - there is a lot more visibility here, they show up in Google results, and it's easy for people to comment, fork and improve.",
      "votes": null
    },
    {
      "id": "636970",
      "postDate": "09/30/2019 12:54:56",
      "content": "<p>looks great!</p>",
      "rawMarkdown": "looks great!",
      "votes": null
    },
    {
      "id": "662038",
      "postDate": "10/31/2019 02:45:51",
      "content": "<p><a href=\"/gzuidhof\">@gzuidhof</a> Could you let us know what are the machine specs used for training the model using the semantic map </p>",
      "rawMarkdown": "gzuidhof Could you let us know what are the machine specs used for training the model using the semantic map",
      "votes": null
    },
    {
      "id": "664031",
      "postDate": "11/03/2019 04:29:00",
      "content": "<p><a href=\"/gzuidhof\">@gzuidhof</a>  - Thanks for sharing the code. When I am trying to execute the code, I am getting index tuple out of range error when get_semantic_map_around_ego function is being called. Is there anything I am missing </p>",
      "rawMarkdown": "gzuidhof  - Thanks for sharing the code. When I am trying to execute the code, I am getting index tuple out of range error when get_semantic_map_around_ego function is being called. Is there anything I am missing",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 633119,
      "author_name": "jesucristo",
      "author_url": "",
      "post_date": "09/24/2019 13:02:04",
      "content": "<p><a href=\"/gzuidhof\">@gzuidhof</a> thank you so much! Do you want people to contribute to the github? I mean, I'd like to finish my best EDA and do a pull request :p </p>",
      "votes": null,
      "replies": [
        {
          "id": 633145,
          "author_name": "gzuidhof",
          "author_url": "",
          "post_date": "09/24/2019 13:38:07",
          "content": "<p>We are very happy to accept contributions! Vladimir is coordinating the SDK and contributions to it.</p>\n\n<p>Although, in my own opinion, Kaggle kernels is probably the best place for EDAs - there is a lot more visibility here, they show up in Google results, and it's easy for people to comment, fork and improve.</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 636970,
      "author_name": "krishna5555",
      "author_url": "",
      "post_date": "09/30/2019 12:54:56",
      "content": "<p>looks great!</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 662038,
      "author_name": "venkat555",
      "author_url": "",
      "post_date": "10/31/2019 02:45:51",
      "content": "<p><a href=\"/gzuidhof\">@gzuidhof</a> Could you let us know what are the machine specs used for training the model using the semantic map </p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 664031,
      "author_name": "manojprabhaakr",
      "author_url": "",
      "post_date": "11/03/2019 04:29:00",
      "content": "<p><a href=\"/gzuidhof\">@gzuidhof</a>  - Thanks for sharing the code. When I am trying to execute the code, I am getting index tuple out of range error when get_semantic_map_around_ego function is being called. Is there anything I am missing </p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "633082": "The dataset comes with a rasterized version of a semantic map, which is a 40k by 40k RGB image.\n\nA week ago I uploaded the reference model, as an example of how to use this semantic map image there is now also a version that uses the map as additional input. In my (limited) experiments I saw an improvement to both precision and recall, especially at larger distances from the ego vehicle.\n\nUnfortunately the current reference model implementation using the semantic map runs out of memory in a GPU kernel (the dataset and model itself already uses a lot of its memory). Instead, you can find the kernel with output in the SDK repository: https://github.com/lyft/nuscenes-devkit/blob/master/notebooks/Reference%20Model.ipynb \n\nI hope it helps some of you, happy to answer questions here :)",
    "633119": "gzuidhof thank you so much! Do you want people to contribute to the github? I mean, I'd like to finish my best EDA and do a pull request :p",
    "633145": "We are very happy to accept contributions! Vladimir is coordinating the SDK and contributions to it.\n\nAlthough, in my own opinion, Kaggle kernels is probably the best place for EDAs - there is a lot more visibility here, they show up in Google results, and it's easy for people to comment, fork and improve.",
    "636970": "looks great!",
    "662038": "gzuidhof Could you let us know what are the machine specs used for training the model using the semantic map",
    "664031": "gzuidhof  - Thanks for sharing the code. When I am trying to execute the code, I am getting index tuple out of range error when get_semantic_map_around_ego function is being called. Is there anything I am missing"
  },
  "source": "meta"
}