{
  "id": 99162,
  "title": "Dark Images after preprocessing?",
  "url": "/competitions/generative-dog-images/discussion/99162",
  "author_name": "",
  "post_date": "2019-07-09T08:19:31.204972Z",
  "votes": null,
  "comment_count": 3,
  "views": 0,
  "content": "<p>After the processing and normalization , my input images are very very dark in nature . Some of them are not visible as well . Any idea , how to prevent this issue , correct the issue and most importantly , does that impact the capability of GAN, if those images were not removed from input ? </p>",
  "messages": [
    {
      "id": "571147",
      "postDate": "07/09/2019 08:19:31",
      "content": "<p>After the processing and normalization , my input images are very very dark in nature . Some of them are not visible as well . Any idea , how to prevent this issue , correct the issue and most importantly , does that impact the capability of GAN, if those images were not removed from input ? </p>",
      "rawMarkdown": "After the processing and normalization , my input images are very very dark in nature . Some of them are not visible as well . Any idea , how to prevent this issue , correct the issue and most importantly , does that impact the capability of GAN, if those images were not removed from input ?",
      "votes": null
    },
    {
      "id": "571204",
      "postDate": "07/09/2019 09:49:31",
      "content": "<p>Some may because the normalization, you need to do something like (generated_images*0.5+0.5) to return it back, the model will learn normalized images, you need to unnnomalize yourself. As for very dark images after preprocessing, maybe we need to remove them.</p>",
      "rawMarkdown": "Some may because the normalization, you need to do something like (generated_images*0.5+0.5) to return it back, the model will learn normalized images, you need to unnnomalize yourself. As for very dark images after preprocessing, maybe we need to remove them.",
      "votes": null
    },
    {
      "id": "571222",
      "postDate": "07/09/2019 10:24:50",
      "content": "<p>You need to denormalize images when plotting or saving. After I included this step, my score increased significantly.</p>",
      "rawMarkdown": "You need to denormalize images when plotting or saving. After I included this step, my score increased significantly.",
      "votes": null
    },
    {
      "id": "571226",
      "postDate": "07/09/2019 10:32:02",
      "content": "<p>Awesome thanks for the tips</p>",
      "rawMarkdown": "Awesome thanks for the tips",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 571204,
      "author_name": "jionie",
      "author_url": "",
      "post_date": "07/09/2019 09:49:31",
      "content": "<p>Some may because the normalization, you need to do something like (generated_images*0.5+0.5) to return it back, the model will learn normalized images, you need to unnnomalize yourself. As for very dark images after preprocessing, maybe we need to remove them.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 571222,
      "author_name": "dvorobiev",
      "author_url": "",
      "post_date": "07/09/2019 10:24:50",
      "content": "<p>You need to denormalize images when plotting or saving. After I included this step, my score increased significantly.</p>",
      "votes": null,
      "replies": [
        {
          "id": 571226,
          "author_name": "phoenix9032",
          "author_url": "",
          "post_date": "07/09/2019 10:32:02",
          "content": "<p>Awesome thanks for the tips</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "571147": "After the processing and normalization , my input images are very very dark in nature . Some of them are not visible as well . Any idea , how to prevent this issue , correct the issue and most importantly , does that impact the capability of GAN, if those images were not removed from input ?",
    "571204": "Some may because the normalization, you need to do something like (generated_images*0.5+0.5) to return it back, the model will learn normalized images, you need to unnnomalize yourself. As for very dark images after preprocessing, maybe we need to remove them.",
    "571222": "You need to denormalize images when plotting or saving. After I included this step, my score increased significantly.",
    "571226": "Awesome thanks for the tips"
  },
  "source": "meta"
}