{
  "id": 295528,
  "title": "What information do the 3 channels represent?",
  "url": "/competitions/sartorius-cell-instance-segmentation/discussion/295528",
  "author_name": "",
  "post_date": "2021-12-16T10:34:04.090086100Z",
  "votes": null,
  "comment_count": 1,
  "views": 0,
  "content": "<p>I am new to image recognition, and I learned that when an image has channels, it means that the image is a color image.<br>\nBut this image is grayscale. In addition, when I view the image for each channel which has different tensor, they appear to be exactly the same image that is grayscale.<br>\nWhat information do the 3 channels represent?</p>",
  "messages": [
    {
      "id": "1620009",
      "postDate": "12/16/2021 10:34:04",
      "content": "<p>I am new to image recognition, and I learned that when an image has channels, it means that the image is a color image.<br>\nBut this image is grayscale. In addition, when I view the image for each channel which has different tensor, they appear to be exactly the same image that is grayscale.<br>\nWhat information do the 3 channels represent?</p>",
      "rawMarkdown": "I am new to image recognition, and I learned that when an image has channels, it means that the image is a color image.\nBut this image is grayscale. In addition, when I view the image for each channel which has different tensor, they appear to be exactly the same image that is grayscale.\nWhat information do the 3 channels represent?",
      "votes": null
    },
    {
      "id": "1620251",
      "postDate": "12/16/2021 15:23:37",
      "content": "<p>png format has to have 3 channels and duplicates them. even if you save an [n,n] image as png and reload it, it'll come back as [n,n,3]. Just pick one of the channels, they are identical.</p>",
      "rawMarkdown": "png format has to have 3 channels and duplicates them. even if you save an [n,n] image as png and reload it, it'll come back as [n,n,3]. Just pick one of the channels, they are identical.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1620251,
      "author_name": "authman",
      "author_url": "",
      "post_date": "12/16/2021 15:23:37",
      "content": "<p>png format has to have 3 channels and duplicates them. even if you save an [n,n] image as png and reload it, it'll come back as [n,n,3]. Just pick one of the channels, they are identical.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "1620009": "I am new to image recognition, and I learned that when an image has channels, it means that the image is a color image.\nBut this image is grayscale. In addition, when I view the image for each channel which has different tensor, they appear to be exactly the same image that is grayscale.\nWhat information do the 3 channels represent?",
    "1620251": "png format has to have 3 channels and duplicates them. even if you save an [n,n] image as png and reload it, it'll come back as [n,n,3]. Just pick one of the channels, they are identical."
  },
  "source": "meta"
}