{
  "id": 155051,
  "title": "best way to check Emptyness of tile",
  "url": "/competitions/prostate-cancer-grade-assessment/discussion/155051",
  "author_name": "Jaideep",
  "post_date": "2020-05-31T05:12:31.794000",
  "votes": 3,
  "comment_count": 0,
  "views": 0,
  "content": "<p>Is there good way to check for emptiness of tiles. \nThere are i think two methods available in public kernel\n1) Argsort by Sum in ascending order\n2) Check for emptiness using pixel intensity</p>\n\n<p>In 1st problem could arise if suppose tile is bit greyish or light but still feature rich so it could get excluded as its sum will be higher than the one whose say 1/3 of portion is full white rest is darker feature. </p>\n\n<p>In second one if we just use pixel intensity to 255. for checking the white part then tiles which have very grey part  will be still considered non empty.</p>\n\n<p>Any suggestions or which one above is better are welcome</p>",
  "messages": [
    {
      "id": 868248,
      "postDate": "2020-05-31T05:12:31.793Z",
      "content": "<p>Is there good way to check for emptiness of tiles. \nThere are i think two methods available in public kernel\n1) Argsort by Sum in ascending order\n2) Check for emptiness using pixel intensity</p>\n\n<p>In 1st problem could arise if suppose tile is bit greyish or light but still feature rich so it could get excluded as its sum will be higher than the one whose say 1/3 of portion is full white rest is darker feature. </p>\n\n<p>In second one if we just use pixel intensity to 255. for checking the white part then tiles which have very grey part  will be still considered non empty.</p>\n\n<p>Any suggestions or which one above is better are welcome</p>",
      "rawMarkdown": "Is there good way to check for emptiness of tiles. \nThere are i think two methods available in public kernel\n1) Argsort by Sum in ascending order\n2) Check for emptiness using pixel intensity\n\nIn 1st problem could arise if suppose tile is bit greyish or light but still feature rich so it could get excluded as its sum will be higher than the one whose say 1/3 of portion is full white rest is darker feature. \n\nIn second one if we just use pixel intensity to 255. for checking the white part then tiles which have very grey part  will be still considered non empty.\n\nAny suggestions or which one above is better are welcome",
      "votes": 3
    }
  ],
  "comments": [],
  "raw_markdown_by_id": {
    "868248": "Is there good way to check for emptiness of tiles. \nThere are i think two methods available in public kernel\n1) Argsort by Sum in ascending order\n2) Check for emptiness using pixel intensity\n\nIn 1st problem could arise if suppose tile is bit greyish or light but still feature rich so it could get excluded as its sum will be higher than the one whose say 1/3 of portion is full white rest is darker feature. \n\nIn second one if we just use pixel intensity to 255. for checking the white part then tiles which have very grey part  will be still considered non empty.\n\nAny suggestions or which one above is better are welcome"
  }
}