{
  "id": 670920,
  "title": "black images in val",
  "url": "/competitions/beyond-visible-spectrum-ai-for-agriculture-2026/discussion/670920",
  "author_name": "Tims",
  "post_date": "2026-01-30T07:53:56.515000",
  "votes": 6,
  "comment_count": 0,
  "views": 0,
  "content": "<p>We have noticed something while working with the dataset and would like to consult with you for clarification.\nDuring our analysis of the hyperspectral image data, we found that some images in both the training and validation sets appear to have all pixel values equal to zero across all bands. We are not entirely sure whether this is an expected characteristic of the data or if it might indicate a potential issue during data acquisition or processing.\nHere are the details:\nIn the training set (/train/HS/), we detected approximately 23 files with this characteristic, :</p>\n<ul>\n<li>Health_hyper_167.tif<ul>\n<li>Health_hyper_26.tif</li>\n<li>Other_hyper_22.tif</li>\n<li>Health_hyper_12.tif</li>\n<li>Health_hyper_23.tif</li>\n<li>Other_hyper_149.tif</li>\n<li>Health_hyper_76.tif</li>\n<li>Health_hyper_38.tif</li>\n<li>Other_hyper_174.tif</li>\n<li>Health_hyper_34.tif</li>\n<li>Other_hyper_122.tif</li>\n<li>Health_hyper_153.tif</li>\n<li>Other_hyper_113.tif</li>\n<li>Other_hyper_121.tif</li>\n<li>Other_hyper_64.tif</li>\n<li>Other_hyper_163.tif</li>\n<li>Health_hyper_67.tif</li>\n<li>Other_hyper_102.tif</li>\n<li>Other_hyper_31.tif</li>\n<li>Other_hyper_155.tif</li>\n<li>Other_hyper_50.tif</li>\n<li>Other_hyper_26.tif</li>\n<li>Other_hyper_160.tif</li></ul></li>\n</ul>\n<p>In the validation set (/val/HS/), we detected approximately 11 files with similar characteristics, :</p>\n<p>['val_05cee914.tif', 'val_147643a2.tif', 'val_5a361ff8.tif', 'val_5adcdc2e.tif', 'val_6b6509fd.tif', 'val_6cef0158.tif', 'val_8e35e5d5.tif', 'val_ceaa5449.tif', 'val_d768878f.tif', 'val_da9148e1.tif', 'val_f1a4afff.tif']</p>",
  "messages": [
    {
      "id": 3399104,
      "postDate": "2026-01-30T07:53:56.517Z",
      "content": "<p>We have noticed something while working with the dataset and would like to consult with you for clarification.\nDuring our analysis of the hyperspectral image data, we found that some images in both the training and validation sets appear to have all pixel values equal to zero across all bands. We are not entirely sure whether this is an expected characteristic of the data or if it might indicate a potential issue during data acquisition or processing.\nHere are the details:\nIn the training set (/train/HS/), we detected approximately 23 files with this characteristic, :</p>\n<ul>\n<li>Health_hyper_167.tif<ul>\n<li>Health_hyper_26.tif</li>\n<li>Other_hyper_22.tif</li>\n<li>Health_hyper_12.tif</li>\n<li>Health_hyper_23.tif</li>\n<li>Other_hyper_149.tif</li>\n<li>Health_hyper_76.tif</li>\n<li>Health_hyper_38.tif</li>\n<li>Other_hyper_174.tif</li>\n<li>Health_hyper_34.tif</li>\n<li>Other_hyper_122.tif</li>\n<li>Health_hyper_153.tif</li>\n<li>Other_hyper_113.tif</li>\n<li>Other_hyper_121.tif</li>\n<li>Other_hyper_64.tif</li>\n<li>Other_hyper_163.tif</li>\n<li>Health_hyper_67.tif</li>\n<li>Other_hyper_102.tif</li>\n<li>Other_hyper_31.tif</li>\n<li>Other_hyper_155.tif</li>\n<li>Other_hyper_50.tif</li>\n<li>Other_hyper_26.tif</li>\n<li>Other_hyper_160.tif</li></ul></li>\n</ul>\n<p>In the validation set (/val/HS/), we detected approximately 11 files with similar characteristics, :</p>\n<p>['val_05cee914.tif', 'val_147643a2.tif', 'val_5a361ff8.tif', 'val_5adcdc2e.tif', 'val_6b6509fd.tif', 'val_6cef0158.tif', 'val_8e35e5d5.tif', 'val_ceaa5449.tif', 'val_d768878f.tif', 'val_da9148e1.tif', 'val_f1a4afff.tif']</p>",
      "rawMarkdown": "We have noticed something while working with the dataset and would like to consult with you for clarification.\nDuring our analysis of the hyperspectral image data, we found that some images in both the training and validation sets appear to have all pixel values equal to zero across all bands. We are not entirely sure whether this is an expected characteristic of the data or if it might indicate a potential issue during data acquisition or processing.\nHere are the details:\nIn the training set (/train/HS/), we detected approximately 23 files with this characteristic, :\n\n - Health_hyper_167.tif\n  - Health_hyper_26.tif\n  - Other_hyper_22.tif\n  - Health_hyper_12.tif\n  - Health_hyper_23.tif\n  - Other_hyper_149.tif\n  - Health_hyper_76.tif\n  - Health_hyper_38.tif\n  - Other_hyper_174.tif\n  - Health_hyper_34.tif\n  - Other_hyper_122.tif\n  - Health_hyper_153.tif\n  - Other_hyper_113.tif\n  - Other_hyper_121.tif\n  - Other_hyper_64.tif\n  - Other_hyper_163.tif\n  - Health_hyper_67.tif\n  - Other_hyper_102.tif\n  - Other_hyper_31.tif\n  - Other_hyper_155.tif\n  - Other_hyper_50.tif\n  - Other_hyper_26.tif\n  - Other_hyper_160.tif\n\nIn the validation set (/val/HS/), we detected approximately 11 files with similar characteristics, :\n\n['val_05cee914.tif', 'val_147643a2.tif', 'val_5a361ff8.tif', 'val_5adcdc2e.tif', 'val_6b6509fd.tif', 'val_6cef0158.tif', 'val_8e35e5d5.tif', 'val_ceaa5449.tif', 'val_d768878f.tif', 'val_da9148e1.tif', 'val_f1a4afff.tif']\n",
      "votes": 6
    }
  ],
  "comments": [],
  "raw_markdown_by_id": {
    "3399104": "We have noticed something while working with the dataset and would like to consult with you for clarification.\nDuring our analysis of the hyperspectral image data, we found that some images in both the training and validation sets appear to have all pixel values equal to zero across all bands. We are not entirely sure whether this is an expected characteristic of the data or if it might indicate a potential issue during data acquisition or processing.\nHere are the details:\nIn the training set (/train/HS/), we detected approximately 23 files with this characteristic, :\n\n - Health_hyper_167.tif\n  - Health_hyper_26.tif\n  - Other_hyper_22.tif\n  - Health_hyper_12.tif\n  - Health_hyper_23.tif\n  - Other_hyper_149.tif\n  - Health_hyper_76.tif\n  - Health_hyper_38.tif\n  - Other_hyper_174.tif\n  - Health_hyper_34.tif\n  - Other_hyper_122.tif\n  - Health_hyper_153.tif\n  - Other_hyper_113.tif\n  - Other_hyper_121.tif\n  - Other_hyper_64.tif\n  - Other_hyper_163.tif\n  - Health_hyper_67.tif\n  - Other_hyper_102.tif\n  - Other_hyper_31.tif\n  - Other_hyper_155.tif\n  - Other_hyper_50.tif\n  - Other_hyper_26.tif\n  - Other_hyper_160.tif\n\nIn the validation set (/val/HS/), we detected approximately 11 files with similar characteristics, :\n\n['val_05cee914.tif', 'val_147643a2.tif', 'val_5a361ff8.tif', 'val_5adcdc2e.tif', 'val_6b6509fd.tif', 'val_6cef0158.tif', 'val_8e35e5d5.tif', 'val_ceaa5449.tif', 'val_d768878f.tif', 'val_da9148e1.tif', 'val_f1a4afff.tif']\n"
  }
}