Plant Senescence Reflectance Index (PSRI)

//VERSION=3 (auto-converted from 1)

let minVal = -0.2;
let maxVal = 0.4;

let viz = new HighlightCompressVisualizerSingle(minVal, maxVal);

function evaluatePixel(samples) {
    let val = (samples.B06 > 0) ? (samples.B04 - samples.B02) / samples.B06 : JAVA_DOUBLE_MAX_VAL;
    return viz.process(val);
}

function setup() {
  return {
    input: [{
      bands: [
          "B02",
          "B04",
          "B06"
      ]
    }],
    output: { bands: 1 }
  }
}

Evaluate and Visualize

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General description

The plant senescence reflectance index, abbreviated PSRI, is defined as
\(PSRI = \frac{B04-B02}{B06}.\)

It is used for studying vegetation; see [1] for details.

Description of representative images

PSRI of Rome. Acquired on 8.10.2017.

PSRI of Rome

References

[1] Index DataBase, index.de: PSRI. Accessed on February 20th 2019.