Enhanced true color visualization
// Sentinel-3 - Enhanced natural colors
// Author: Annamaria Luongo (Twitter: @annamaria_84, https://www.linkedin.com/in/annamaria-luongo-RS)
// CC BY 4.0 International - https://creativecommons.org/licenses/by/4.0/
function stretch(val, min, max) { return (val - min) / (max - min); }
var brightness = 1.0; // default value is 1.0 for land, brightness<=0.3 for clouds or snow/ice;
var index = (B04 - B08) / (B06 + B09); // used for enhance sea visualization
var band1 = brightness * (stretch(B09, 0, 0.25) - 0.1 * stretch(B14, 0, 0.1));
var band2 = brightness * (1.1 * stretch(B06, 0, 0.25) - 0.1 * stretch(B14, 0, 0.1));
var band3 = brightness * (stretch(B04, 0, 0.25) - 0.1 * stretch(B14, 0, 0.1) + .01 * stretch(index, 0.5, 1));
return [band1, band2, band3];Evaluate and Visualize
Description
This script offers enhanced true color visualizations.
Description of representative images
Enhanced true color visualization of Beira, Mozambique. Acquired on 25.3.2019.
Contributors:
- Annamaria Luongo, Twitter: @annamaria_84