{
  "id": 307005,
  "title": "Which way are the beluga going?",
  "url": "/competitions/happy-whale-and-dolphin/discussion/307005",
  "author_name": "",
  "post_date": "2022-02-12T00:47:18.567961800Z",
  "votes": 13,
  "comment_count": 2,
  "views": 0,
  "content": "<p>I am interested in labeling the dataset to indicate the camera location (port, starboard, anterior, posterior, port dorsal fin crop port, starboard dorsal fin crop). For most species, that's easy because the dorsal fin is falcate, with the concave side towards the posterior. (This wouldn't hold true for all populations of spinner dolphins, but so far I haven't seen any with \"backwards\" dorsal fins.) </p>\n<p>BUT I have a lot of difficulty identifying the orientation of the beluga (white whales). Does anyone know how to ID the orientation? Sometimes you can see a bit of an asymmetry but I don't know if the straighter slope is to the front or the back! Any help? </p>\n<p>PS: My scheme also kind of falls down with the right whales, which seem to often have port and starboard head photos. FWIW I'm labeling those as anterior for this pass, but anticipate redoing the labels for the right whales eventually. </p>",
  "messages": [
    {
      "id": "1686336",
      "postDate": "02/12/2022 00:47:18",
      "content": "<p>I am interested in labeling the dataset to indicate the camera location (port, starboard, anterior, posterior, port dorsal fin crop port, starboard dorsal fin crop). For most species, that's easy because the dorsal fin is falcate, with the concave side towards the posterior. (This wouldn't hold true for all populations of spinner dolphins, but so far I haven't seen any with \"backwards\" dorsal fins.) </p>\n<p>BUT I have a lot of difficulty identifying the orientation of the beluga (white whales). Does anyone know how to ID the orientation? Sometimes you can see a bit of an asymmetry but I don't know if the straighter slope is to the front or the back! Any help? </p>\n<p>PS: My scheme also kind of falls down with the right whales, which seem to often have port and starboard head photos. FWIW I'm labeling those as anterior for this pass, but anticipate redoing the labels for the right whales eventually. </p>",
      "rawMarkdown": "I am interested in labeling the dataset to indicate the camera location (port, starboard, anterior, posterior, port dorsal fin crop port, starboard dorsal fin crop). For most species, that's easy because the dorsal fin is falcate, with the concave side towards the posterior. (This wouldn't hold true for all populations of spinner dolphins, but so far I haven't seen any with \"backwards\" dorsal fins.) \n\nBUT I have a lot of difficulty identifying the orientation of the beluga (white whales). Does anyone know how to ID the orientation? Sometimes you can see a bit of an asymmetry but I don't know if the straighter slope is to the front or the back! Any help? \n\nPS: My scheme also kind of falls down with the right whales, which seem to often have port and starboard head photos. FWIW I'm labeling those as anterior for this pass, but anticipate redoing the labels for the right whales eventually.",
      "votes": null
    },
    {
      "id": "1687748",
      "postDate": "02/13/2022 05:52:12",
      "content": "<p>Good question. Belugas, without any dorsal fin or other clear features to landmark off of, are likely to be extremely difficult. In the previous competition, we shied away from including images we felt were likely to create too difficult of a challenge (such as images with part of the whale's tail occluded), then in hindsight wished we had not. I am uncertain if you could consistently be correct in applying the straighter slope as front or back.</p>",
      "rawMarkdown": "Good question. Belugas, without any dorsal fin or other clear features to landmark off of, are likely to be extremely difficult. In the previous competition, we shied away from including images we felt were likely to create too difficult of a challenge (such as images with part of the whale's tail occluded), then in hindsight wished we had not. I am uncertain if you could consistently be correct in applying the straighter slope as front or back.",
      "votes": null
    },
    {
      "id": "1690184",
      "postDate": "02/14/2022 19:01:39",
      "content": "<p>Maybe someone should ask <a href=\"https://www.kaggle.com/gaborfodor\" target=\"_blank\">@gaborfodor</a> ? 😉</p>",
      "rawMarkdown": "Maybe someone should ask @gaborfodor ? 😉",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1687748,
      "author_name": "tedcheese",
      "author_url": "",
      "post_date": "02/13/2022 05:52:12",
      "content": "<p>Good question. Belugas, without any dorsal fin or other clear features to landmark off of, are likely to be extremely difficult. In the previous competition, we shied away from including images we felt were likely to create too difficult of a challenge (such as images with part of the whale's tail occluded), then in hindsight wished we had not. I am uncertain if you could consistently be correct in applying the straighter slope as front or back.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 1690184,
      "author_name": "addisonhoward",
      "author_url": "",
      "post_date": "02/14/2022 19:01:39",
      "content": "<p>Maybe someone should ask <a href=\"https://www.kaggle.com/gaborfodor\" target=\"_blank\">@gaborfodor</a> ? 😉</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "1686336": "I am interested in labeling the dataset to indicate the camera location (port, starboard, anterior, posterior, port dorsal fin crop port, starboard dorsal fin crop). For most species, that's easy because the dorsal fin is falcate, with the concave side towards the posterior. (This wouldn't hold true for all populations of spinner dolphins, but so far I haven't seen any with \"backwards\" dorsal fins.) \n\nBUT I have a lot of difficulty identifying the orientation of the beluga (white whales). Does anyone know how to ID the orientation? Sometimes you can see a bit of an asymmetry but I don't know if the straighter slope is to the front or the back! Any help? \n\nPS: My scheme also kind of falls down with the right whales, which seem to often have port and starboard head photos. FWIW I'm labeling those as anterior for this pass, but anticipate redoing the labels for the right whales eventually.",
    "1687748": "Good question. Belugas, without any dorsal fin or other clear features to landmark off of, are likely to be extremely difficult. In the previous competition, we shied away from including images we felt were likely to create too difficult of a challenge (such as images with part of the whale's tail occluded), then in hindsight wished we had not. I am uncertain if you could consistently be correct in applying the straighter slope as front or back.",
    "1690184": "Maybe someone should ask @gaborfodor ? 😉"
  },
  "source": "meta"
}