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Table of Contents

Batches

blob_home and data_root - storage location information

batch_id - unique batch identifier

upload_datetime - when image were uploaded to “uploads” blob storage

image_list - list of images contained in a single batch folder

schema_version - version of data schema used for organizing metadata

Code Block
languagejson
{
    "blob_home": "data",
    "data_root": "semifield-developed-images",
    "batch_id": "NC_2022-08-05",
    "upload_datetime": "2022-08-19_21:28:37",
    "image_list": [
        "images/NC_1659710908.jpg",
        "images/NC_1659711200.jpg",
        "images/NC_1659706234.jpg",
        ...
        "images/NC_1659709264.jpg",
        "images/NC_1659715086.jpg",
        "images/NC_1659706245.jpg"
        ],
    "schema_version": "1.0"
}

Images

Images - general

blob_home and data_root - storage location information

batch_id - unique batch identifier

image_id - unique image id comprised of state abbreviation and UNIX timestamp

image_path - Image filename with a single parent directory

plant_date - plant date for entire batch. Does not account for replantings.

growth_stage - estimated growth stage based on planting date

width and height - image height and width in pixels. May be downscaled as a result of autosfm; however, image in the “images”directory are full sized images. See fullres_width and fullres_height

exif_meta

camera_info

cutout_ids

bboxes

fullres_height

fullres_width

fullres_width

Code Block
languagejson
{
    "blob_home": "data",
    "data_root": "semifield-developed-images",
    "batch_id": "NC_2022-07-27",
    "image_id": "NC_1658926241",
    "image_path": "images/NC_1658926241.jpg",
    "plant_date": "2022-06-09",
    "growth_stage": "vegetative",
    "width": 4780,
    "height": 3184,
    
    "exif_meta": { ...
},
    
    "camerafullres_infoheight": { ... }6368,
    
    "cutoutfullres_idswidth": [ ... ]9560,
    
    "bboxes"schema_version": [ ... ],
    

    "fullres_height": 6368,
    "fullres_width": 9560,
    "schema_version": "1.0"
"1.0"
}


Images - Exif

Uses Exif-Py

pip install exifread

Technical tag information can be found here

Code Block
languagejson
    "exif_meta": {
        "ImageWidth": 9560,
        "ImageLength": 6368,
        "BitsPerSample": 8,
        "Compression": 1,
        "PhotometricInterpretation": 2,
        "Make": "SONY",
        "Model": "ILCE-7RM4",
        "Orientation": 1,
        "SamplesPerPixel": 3,
        "XResolution": "300",
        "YResolution": "300",
        "PlanarConfiguration": 1,
        "ResolutionUnit": 2,
        "Software": "RawTherapee 5.8",
        "DateTime": "2022:07:27 08:49:15",
        "Rating": 0,
        "ExifOffset": 4449,
        "ExposureTime": "1/200",
        "FNumber": "10",
        "ExposureProgram": 1,
        "ISOSpeedRatings": 100,
        "RecommendedExposureIndex": 100,
        "ExifVersion": [
            48,
            50,
            51,
            49
        ],
        "DateTimeOriginal": "2022:07:27 08:49:15",
        "DateTimeDigitized": "2022:07:27 08:49:15",
        "BrightnessValue": "9207/1280",
        "ExposureBiasValue": "0",
        "MaxApertureValue": "217/128",
        "MeteringMode": 5,
        "LightSource": 0,
        "Flash": 16,
        "FocalLength": "55",
        "FileSource": 3,
        "SceneType": 1,
        "CustomRendered": 0,
        "ExposureMode": 1,
        "WhiteBalance": 0,
        "DigitalZoomRatio": "1",
        "FocalLengthIn35mmFilm": 55,
        "SceneCaptureType": 0,
        "Contrast": 0,
        "Saturation": 0,
        "Sharpness": 0,
        "LensSpecification": [
            "55",
            "55",
            "9/5",
            "9/5"
        ],
        "LensModel": "FE 55mm F1.8 ZA",
        "BodySerialNumber": null,
        "MakerNote": null,
        "ImageDescription": " ",
        "UserComment": null,
        "ApplicationNotes": null,
        "Tag": null,
        "SubIFDs": 4450
    }

Images - camera info

camera_info

camera_location

pixel_width & pixel_height

yaw, pitch, roll

focal_length

fov

is_scaleable

Code Block
languagejson
"camera_info": {
                  "camera_location": [
              -0        -0.1992725638544925,
                      9.926811159768054,
                      2.130928709515993
        ],         "pixel_width": 0.0075333198937023,         "pixel_height": 0.0075333198937023,         "yaw": 183.89777711639093 ],
        "pitch": -2.3366362127596525,         "rollpixel_width": 0.71359150327706580075333198937023,
        "focal_length": 8747.80961719926,         "fovpixel_height": {0.0075333198937023,
                  "top_leftyaw": [183.89777711639093,
                  "pitch": -02.80648121173935123366362127596525,

               10.27414293412319       "roll": 0.7135915032770658,
     ],             "topfocal_rightlength": [8747.80961719926,
                0.3552128560424488,  "fov": {
             10.353294011316107         "top_left": [
  ],             "bottom_left": [                 -0.75375798375143398064812117393512,

               9.50032830822           10.27414293412319
 ],             "bottom_right": [       ],
         0.4079360840303661,             "top_right": [
                          0.3552128560424488,
                          10.353294011316107
                      ],
                      "bottom_left": [
                          -0.7537579837514339,
                          9.50032830822
                      ],
                      "bottom_right": [
                          0.4079360840303661,
                          9.579479385412917
                      ],
                      "is_scaleable": true
 9.579479385412917             ],            }
"is_scaleable": true         }     }

Images - cutouts

cutout_ids

Code Block
languagejson
"cutout_ids": [
                "NC_1658926241_0",
                "NC_1658926241_1",
                "NC_1658926241_1",2",
                "NC_1658926241_23",
         "NC_1658926241_3"     ],

Images - bounding boxes

bbox_id

image_id

local_centroid

local_coordinates

is_scaleable

global_centroid

global_coordinates

Code Block
languagejson
"bboxes": [
            {
              "bbox_id": "NC_1658926241_0",
              "image_id": "NC_1658926241",
              "local_centroid": [
                  0.7247684299945831,
                  0.782112181186676
              ],
              "local_coordinates": {
                  "top_left": [
 [                     4559.100573062897,
                      3592.980739593506
                  ],
                  "top_right": [
                      9298.47180843353,
                      3592.980739593506
                  ],
                  "bottom_left": [
                      4559.100573062897,
                    6368.0
                ],
                "bottom_right": [         6368.0
           9298.47180843353,       ],
             6368.0     "bottom_right": [
          ],            9298.47180843353,
    "is_scaleable": true               },   6368.0
         "global_centroid": [        ],
        -0.3805987383493097,          "is_scaleable": true
     10.21634506227248             ],             "global_coordinates": {     },
              "topglobal_leftcentroid": [
                    -0.12457382680940713805987383493097,

                   10.01513937454345921634506227248
                ],
                "topglobal_rightcoordinates": [{
                  "top_left": [
-0.7303918468219674,                      10-0.117283215151721245738268094071,
                ],      10.015139374543459
          "bottom_left": [                ],
    -0.07889030276824338,              "top_right": [
     10.4175507500015                 ]-0.7303918468219674,
                "bottom_right": [      10.11728321515172
                 -0.682307173930376, ],
                  "bottom_left": [
     10.458062046757698                 ]-0.07889030276824338,
                "is_scaleable": true      10.4175507500015
      },            ],
"cls": {                 "scientificbottom_nameright": [
"Amaranthus palmeri",                    "common_name": "Palmer amaranth" -0.682307173930376,
                "USDA_symbol": "AMPA",      10.458062046757698
                  ],
"EPPO": "AMAPA",                 "authorityis_scaleable": "Watson", true
                     "collection_location": "NC",                }
"polygon_id": ""             },
          ]

Image - species

Code Block
"cls": {
        "isscientific_primaryname": false,
   "Amaranthus palmeri",
        "overlappingcommon_bbox_idsname": []
"Palmer amaranth",
       },
  "USDA_symbol": "AMPA",
        "EPPO": "AMAPA",
   {     "authority": "Watson",
      ...  "collection_location": "NC",
     }   "polygon_id": ""
         ],}

Cutouts

Cutouts - origin

Code Block
languagejson
{
    "blob_home": "data",
    "data_root": "semifield-cutouts",
    "batch_id": "NC_2022-08-05",
    "image_id": "NC_1659703400",
    "cutout_id": "NC_1659703400_0",
    "cutout_path": "NC_2022-08-05/NC_1659703400_0.png",
    "cls": {
        "scientific_name": "Amaranthus palmeri",
        "common_name": "Palmer amaranth",
        "USDA_symbol": "AMPA",
        "EPPO": "AMAPA",
        "authority": "Watson",
        "collection_location": "NC",
        "polygon_id": ""
    },
    "cutout_num": 0,
    "is_primary": false,
    "datetime": "2022:08:05 08:41:41",
    "cutout_props": {
        "area": 28153.0,
        "area_bbox": 95480.0,
        "area_convex": 50539.0,
        "axis_major_length": 248.60737102397786,
        "axis_minor_length": 212.34307812840584,
        "centroid0": 156.52289276453664,
        "centroid1": 184.76936738535858,
        "eccentricity": 0.5200591323747853,
        "solidity": 0.5570549476641802,
        "perimeter": 1873.559666716433,
        "is_green": true,
        "green_sum": 17637
    },
    "extends_border": true,
    "cutout_version": "1.0",
    "schema_version": "1.0"
}

Cutouts - properties

Code Block

Cutouts - species

Code Block

Cutouts - contours

Code Block