{
  "id": 127973,
  "title": "Image size",
  "url": "/competitions/bengaliai-cv19/discussion/127973",
  "author_name": "",
  "post_date": "2020-01-28T06:10:23.099905Z",
  "votes": 1,
  "comment_count": 16,
  "views": 0,
  "content": "<p>Does everyone use 128*128 for their image size? I use 64*64 since it is too slow to train on 128*128. I think using a low resolution is important for people like me who have limited GPUs</p>",
  "messages": [
    {
      "id": "730931",
      "postDate": "01/28/2020 06:10:23",
      "content": "<p>Does everyone use 128*128 for their image size? I use 64*64 since it is too slow to train on 128*128. I think using a low resolution is important for people like me who have limited GPUs</p>",
      "rawMarkdown": "Does everyone use 128*128 for their image size? I use 64*64 since it is too slow to train on 128*128. I think using a low resolution is important for people like me who have limited GPUs",
      "votes": null
    },
    {
      "id": "730944",
      "postDate": "01/28/2020 06:42:19",
      "content": "<p>I use 64x64 too, since I have limited resources.</p>",
      "rawMarkdown": "I use 64x64 too, since I have limited resources.",
      "votes": null
    },
    {
      "id": "732110",
      "postDate": "01/29/2020 13:57:49",
      "content": "<p>Is your current score achieved by using 64x64 image size?\nIn my case, 224x224 image size is better than 128x128. I haven't tried 64x64 image size yet..</p>",
      "rawMarkdown": "Is your current score achieved by using 64x64 image size?\nIn my case, 224x224 image size is better than 128x128. I haven't tried 64x64 image size yet..",
      "votes": null
    },
    {
      "id": "732239",
      "postDate": "01/29/2020 15:50:43",
      "content": "<p>Yeah my current score is using 64x64</p>",
      "rawMarkdown": "Yeah my current score is using 64x64",
      "votes": null
    },
    {
      "id": "732240",
      "postDate": "01/29/2020 15:51:35",
      "content": "<p>Also I'm pretty sure increasing resolution gives you better score overall 64x64 just trains fast so i can do more experiments</p>",
      "rawMarkdown": "Also I'm pretty sure increasing resolution gives you better score overall 64x64 just trains fast so i can do more experiments",
      "votes": null
    },
    {
      "id": "732612",
      "postDate": "01/30/2020 02:01:46",
      "content": "<p>Thanks for great advice!!!</p>",
      "rawMarkdown": "Thanks for great advice!!!",
      "votes": null
    },
    {
      "id": "732613",
      "postDate": "01/30/2020 02:04:01",
      "content": "<p>No problem! </p>",
      "rawMarkdown": "No problem!",
      "votes": null
    },
    {
      "id": "732755",
      "postDate": "01/30/2020 08:09:27",
      "content": "<p>resizing to 68x118 (i.e. scale by 0.5) and using serexnext50 + some modification + several augmentation can give LB score of about 0.974 for single model / single fold</p>",
      "rawMarkdown": "resizing to 68x118 (i.e. scale by 0.5) and using serexnext50 + some modification + several augmentation can give LB score of about 0.974 for single model / single fold",
      "votes": null
    },
    {
      "id": "733086",
      "postDate": "01/30/2020 16:22:29",
      "content": "<p>That's really magic. With image size 64 I couldn't even get LB 0.95. May I ask what gives you the boost with such a small image size.</p>",
      "rawMarkdown": "That's really magic. With image size 64 I couldn't even get LB 0.95. May I ask what gives you the boost with such a small image size.",
      "votes": null
    },
    {
      "id": "733172",
      "postDate": "01/30/2020 19:05:45",
      "content": "<p>I used something similar to wide resnet with dropout and cutout on 64x64 images which gave my current score. I don't use any pretrained weights and fine tune the architecture myself</p>",
      "rawMarkdown": "I used something similar to wide resnet with dropout and cutout on 64x64 images which gave my current score. I don't use any pretrained weights and fine tune the architecture myself",
      "votes": null
    },
    {
      "id": "733179",
      "postDate": "01/30/2020 19:23:46",
      "content": "<p>Just to confirm, Is your current score obtained from a single fold for 64x64 ?</p>",
      "rawMarkdown": "Just to confirm, Is your current score obtained from a single fold for 64x64 ?",
      "votes": null
    },
    {
      "id": "733195",
      "postDate": "01/30/2020 20:00:24",
      "content": "<p>Yes trained without validation after tuning</p>",
      "rawMarkdown": "Yes trained without validation after tuning",
      "votes": null
    },
    {
      "id": "733213",
      "postDate": "01/30/2020 20:33:36",
      "content": "<p>Hi <a href=\"/shujun717\">@shujun717</a> If you are really limited to 64by64 pixels you can also try taking different crops from each training image. Either according to a random pattern or some fixed pattern like Center, topleft, topright etc.\nIt might give you a further increase in score.  That said...with your current position you're already doing a great job.</p>",
      "rawMarkdown": "Hi @shujun717 If you are really limited to 64by64 pixels you can also try taking different crops from each training image. Either according to a random pattern or some fixed pattern like Center, topleft, topright etc.\nIt might give you a further increase in score.  That said...with your current position you're already doing a great job.",
      "votes": null
    },
    {
      "id": "733216",
      "postDate": "01/30/2020 20:38:03",
      "content": "<p>Thanks! Will try that</p>",
      "rawMarkdown": "Thanks! Will try that",
      "votes": null
    },
    {
      "id": "738536",
      "postDate": "02/06/2020 16:54:31",
      "content": "<p>why my resnext50 with 68x118 lb(0.9688) so lower, but my cv is 0.9789😹  <a href=\"/hengck23\">@hengck23</a> </p>",
      "rawMarkdown": "why my resnext50 with 68x118 lb(0.9688) so lower, but my cv is 0.9789😹  @hengck23",
      "votes": null
    },
    {
      "id": "738793",
      "postDate": "02/07/2020 02:56:00",
      "content": "<p>Well he owns 2 gtx 2080 😅</p>",
      "rawMarkdown": "Well he owns 2 gtx 2080 😅",
      "votes": null
    },
    {
      "id": "738961",
      "postDate": "02/07/2020 08:09:19",
      "content": "<p>how your score 0.974, recall or accuracy？</p>",
      "rawMarkdown": "how your score 0.974, recall or accuracy？",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 730944,
      "author_name": "quandapro",
      "author_url": "",
      "post_date": "01/28/2020 06:42:19",
      "content": "<p>I use 64x64 too, since I have limited resources.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 732110,
      "author_name": "inoueu1",
      "author_url": "",
      "post_date": "01/29/2020 13:57:49",
      "content": "<p>Is your current score achieved by using 64x64 image size?\nIn my case, 224x224 image size is better than 128x128. I haven't tried 64x64 image size yet..</p>",
      "votes": null,
      "replies": [
        {
          "id": 732239,
          "author_name": "shujun717",
          "author_url": "",
          "post_date": "01/29/2020 15:50:43",
          "content": "<p>Yeah my current score is using 64x64</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 732240,
          "author_name": "shujun717",
          "author_url": "",
          "post_date": "01/29/2020 15:51:35",
          "content": "<p>Also I'm pretty sure increasing resolution gives you better score overall 64x64 just trains fast so i can do more experiments</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 732612,
          "author_name": "inoueu1",
          "author_url": "",
          "post_date": "01/30/2020 02:01:46",
          "content": "<p>Thanks for great advice!!!</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 732613,
          "author_name": "shujun717",
          "author_url": "",
          "post_date": "01/30/2020 02:04:01",
          "content": "<p>No problem! </p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 733086,
          "author_name": "syoya1997",
          "author_url": "",
          "post_date": "01/30/2020 16:22:29",
          "content": "<p>That's really magic. With image size 64 I couldn't even get LB 0.95. May I ask what gives you the boost with such a small image size.</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 733172,
          "author_name": "shujun717",
          "author_url": "",
          "post_date": "01/30/2020 19:05:45",
          "content": "<p>I used something similar to wide resnet with dropout and cutout on 64x64 images which gave my current score. I don't use any pretrained weights and fine tune the architecture myself</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 733179,
          "author_name": "sachinprabhu",
          "author_url": "",
          "post_date": "01/30/2020 19:23:46",
          "content": "<p>Just to confirm, Is your current score obtained from a single fold for 64x64 ?</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 733195,
          "author_name": "shujun717",
          "author_url": "",
          "post_date": "01/30/2020 20:00:24",
          "content": "<p>Yes trained without validation after tuning</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 732755,
      "author_name": "hengck23",
      "author_url": "",
      "post_date": "01/30/2020 08:09:27",
      "content": "<p>resizing to 68x118 (i.e. scale by 0.5) and using serexnext50 + some modification + several augmentation can give LB score of about 0.974 for single model / single fold</p>",
      "votes": null,
      "replies": [
        {
          "id": 738536,
          "author_name": "cswwp347724",
          "author_url": "",
          "post_date": "02/06/2020 16:54:31",
          "content": "<p>why my resnext50 with 68x118 lb(0.9688) so lower, but my cv is 0.9789😹  <a href=\"/hengck23\">@hengck23</a> </p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 738961,
          "author_name": "masterzj",
          "author_url": "",
          "post_date": "02/07/2020 08:09:19",
          "content": "<p>how your score 0.974, recall or accuracy？</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 733213,
      "author_name": "rsmits",
      "author_url": "",
      "post_date": "01/30/2020 20:33:36",
      "content": "<p>Hi <a href=\"/shujun717\">@shujun717</a> If you are really limited to 64by64 pixels you can also try taking different crops from each training image. Either according to a random pattern or some fixed pattern like Center, topleft, topright etc.\nIt might give you a further increase in score.  That said...with your current position you're already doing a great job.</p>",
      "votes": null,
      "replies": [
        {
          "id": 733216,
          "author_name": "shujun717",
          "author_url": "",
          "post_date": "01/30/2020 20:38:03",
          "content": "<p>Thanks! Will try that</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 738793,
          "author_name": "quandapro",
          "author_url": "",
          "post_date": "02/07/2020 02:56:00",
          "content": "<p>Well he owns 2 gtx 2080 😅</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "730931": "Does everyone use 128*128 for their image size? I use 64*64 since it is too slow to train on 128*128. I think using a low resolution is important for people like me who have limited GPUs",
    "730944": "I use 64x64 too, since I have limited resources.",
    "732110": "Is your current score achieved by using 64x64 image size?\nIn my case, 224x224 image size is better than 128x128. I haven't tried 64x64 image size yet..",
    "732239": "Yeah my current score is using 64x64",
    "732240": "Also I'm pretty sure increasing resolution gives you better score overall 64x64 just trains fast so i can do more experiments",
    "732612": "Thanks for great advice!!!",
    "732613": "No problem!",
    "732755": "resizing to 68x118 (i.e. scale by 0.5) and using serexnext50 + some modification + several augmentation can give LB score of about 0.974 for single model / single fold",
    "733086": "That's really magic. With image size 64 I couldn't even get LB 0.95. May I ask what gives you the boost with such a small image size.",
    "733172": "I used something similar to wide resnet with dropout and cutout on 64x64 images which gave my current score. I don't use any pretrained weights and fine tune the architecture myself",
    "733179": "Just to confirm, Is your current score obtained from a single fold for 64x64 ?",
    "733195": "Yes trained without validation after tuning",
    "733213": "Hi @shujun717 If you are really limited to 64by64 pixels you can also try taking different crops from each training image. Either according to a random pattern or some fixed pattern like Center, topleft, topright etc.\nIt might give you a further increase in score.  That said...with your current position you're already doing a great job.",
    "733216": "Thanks! Will try that",
    "738536": "why my resnext50 with 68x118 lb(0.9688) so lower, but my cv is 0.9789😹  @hengck23",
    "738793": "Well he owns 2 gtx 2080 😅",
    "738961": "how your score 0.974, recall or accuracy？"
  },
  "source": "meta"
}