16-to-8 Bit Conversion

Description

A processing block that enables using partner processing blocks that require 8 bit imagery with 16 bit imagery from Sentinel-2 L2A.

See this block on the marketplace.

How it works

This block has no configurable JSON parameters.

The block takes 16 bit GeoTIFF images as input and applies a conversion factor to output 8 bit GeoTIFF images. The conversion uses the formula below:

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

Example

A workflow with the following blocks:

{
  "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": {}
}

Capabilities

Input

raster

up42_standard
`dtype`	`uint16`
`format`	`GTiff`
`sensor`	`Sentinel2`

Output

raster

up42_standard
`bands`	`> (propagated)`
`dtype`	`uint8`
`format`	`GTiff`
`sensor`	`> (propagated)`
`resolution`	`> (propagated)`
`processing_level`	`> (propagated)`

To know more please check the block capabilities specifications.