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16-to-8 Bit Conversion

Converts 16 bit imagery from Sentinel-2 into 8 bit imagery.


Introduction

For more information, please read the block description.

Block type: PROCESSING

The 16-to-8 Bit Conversion block enables using partner processing blocks that require 8 bit imagery with 16 bit imagery from Sentinel-2 L2A. The block takes 16bit GeoTIFF images as input and applies a conversion factor to output 8bit GeoTIFF images.

Conversion Factor

The conversion makes use of the the formula below:

result=val_12bit2812121result = val{\_}12bit \frac{2^8 - 1}{2^{12} - 1}

Example parameters

Example parameters using the data block Sentinel-2 L2A (SAFE) and the processing block s2-superresolution:

{
    "aws-s2-l2a:1": {
        "ids": null,
        "bbox": [
            13.338221,
            52.503106,
            13.369208,
            52.522625
        ],
        "time": "2018-12-01T00:00:00+00:00/2021-12-31T23:59:59+00:00",
        "limit": 1,
        "time_series": null,
        "max_cloud_cover": 100
    },
    "s2-superresolution:1": {
        "bbox": [
            13.338221,
            52.503106,
            13.369208,
            52.522625
        ],
        "contains": null,
        "intersects": null,
        "clip_to_aoi": true,
        "copy_original_bands": true
    },
    "up42-16to8bit-conversion:1": {}
}

Output format

Output and input format are both GeoTIFF. All metadata elements provided by the input dataset as properties are propagated to the output files.