Incomplete/cut image from Process API

[de_accountspayable]

Hello,

When using a certain Process API request, I get an incomplete/cut image. Here is a snapshot from the Request Builder containing the resulted image and the intersecting tile.

The ProcessAPI request is this one:

{
  "input": {
    "bounds": {
      "geometry": {
        "coordinates": [
          [
            [
              24.527256779197273,
              47.377555717357474
            ],
            [
              24.54297332327789,
              47.39162481294954
            ],
            [
              24.568475676263887,
              47.37901216768802
            ],
            [
              24.542725871122002,
              47.35561042920904
            ],
            [
              24.527256779197273,
              47.377555717357474
            ]
          ]
        ],
        "type": "Polygon"
      }
    },
    "data": [
      {
        "dataFilter": {
          "timeRange": {
            "from": "2022-09-08T09:37:17Z",
            "to": "2022-09-08T09:37:23Z"
          }
        },
        "processing": {
          "downsampling": "BICUBIC",
          "upsampling": "BICUBIC"
        },
        "type": "sentinel-2-l2a"
      }
    ]
  },
  "output": {
    "resx": 0.00006648209204292522,
    "resy": 0.000045017979675625596,
    "responses": [
      {
        "identifier": "default",
        "format": {
          "type": "image/tiff"
        }
      }
    ]
  },
  "evalscript": "//VERSION=3\nfunction setup() {\n  return {\n    input: [\"B04\",\"B03\", \"B02\", \"dataMask\"],\n    output: { bands: 4 }\n  };\n}\nfunction evaluatePixel(sample) {\n  return[5 * sample.B04, 5 * sample.B03, 5 * sample.B02, sample.dataMask];\n}"
}

Before downloading the image, I’m using Catalog API with “intersects” attribute to filter out the tiles that are not appropriate. However, in this case, the tile geometry seems to include the searched polygon, as seen in the RequestBuilder snapshot. The acquisition date is “2022-09-08T09:37:20Z”

Why is there a small area missing from the image?

Thank you!

[william.ray]

Thanks for reporting this, we will investigate the reason why that small area is missing from the returned image and give an answer in due course

[william.ray]

Hi, to give an explanation as to why the small area of pixels is missing from your AOI. We use an internal buffer when using scene data which means the edge of the scene is not used. We do this because, the quality of the pixels at the border of the orbit are degraded and therefore not useful.

Hope that this information is useful to you

[de_accountspayable]

Hi @william.ray ,

Thank you for the information.

Do you have any recommendation about how to filter these images with missing areas? Right now, I’m checking if the AOI geometry is included in the tile geometry from the Catalog API response. But since we have this situation where the edge of the scene is not used, I’m not sure how to eliminate these kind of images.