Merge pull request #291 from cpaulik/add-crop-biomass

Add Crop Biomass Evalscripts

planetary-variables/crop-biomass/crop-biomass.md

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+---
+title: Crop Biomass
+nav_order: 2
+parent: Planetary Variables
+layout: script
+permalink: /planetary-variables/crop-biomass/
+scripts:
+    - [Visualization, script.js]
+    - [EO Browser, eob.js]
+    - [Raw Values, raw.js]
+---
+
+## Evaluate and visualize
+
+As Crop Biomass is commercial data, brought into Sentinel Hub as Bring Your Own Data, direct EO Browser and Sentinel Playground links are not possible due to the personalized data credentials.
+
+## General description
+
+Biomass Proxy is a fusion of microwave and optical satellite imagery, using the advantages of each to accurately estimate relative above-ground crop biomass regardless of cloud cover and at a high spatial resolution (10 m x 10 m).
+
+It integrates microwave data from the European Space Agency (ESA) Sentinel-1 satellites and optical images from its Sentinel-2 satellites.
+
+Planetary Variables then fuses the output from these combined data sources in an algorithm designed to provide a reliable measurement of crop biomass over agricultural areas under all circumstances.
+
+This is a relative measure of biomass, so each pixel value has a value of 0 (low biomass) to 1 (high biomass).
+
+It should be computed over agricultural fields.
+
+
+## Description of representative images
+
+Crop Biomass of agriculture fields in Uruguay.
+
+![Various fields over Uruguay](fig/fig1.png)
+

planetary-variables/crop-biomass/eob.js

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+//VERSION=3
+function setup() {
+  return {
+    input: ["CB", "dataMask"],
+    output: [
+      { id: "default", bands: 4 },
+      { id: "index", bands: 1, sampleType: 'FLOAT32' },
+      { id: "eobrowserStats", bands: 1, sampleType: 'FLOAT32' },
+      { id: "dataMask", bands: 1 }
+    ]
+  };
+}
+
+
+const bp_ramp = [
+  [0, 0xfff7ea],
+  [0.100, 0xf3e3c8],
+  [0.200, 0xdad0a4],
+  [0.300, 0xbdc082],
+  [0.400, 0x99b160],
+  [0.500, 0x6da242],
+  [0.600, 0x2c952e],
+  [0.7000, 0x008729],
+  [0.800, 0x007932],
+  [0.9000, 0x006640],
+  [1.000, 0x005444],
+];
+
+const visualizer = new ColorRampVisualizer(bp_ramp);
+
+let factor = 1 / 1000;
+function evaluatePixel(sample) {
+  let val = sample.CB * factor;
+  let imgVals = visualizer.process(val);
+  return {
+    default: [...imgVals, sample.dataMask],
+    index: [val],
+    eobrowserStats: [val],
+    dataMask: [sample.dataMask]
+  };
+}
+

planetary-variables/crop-biomass/raw.js

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+//VERSION=3
+function setup() {
+  return {
+    input: ["CB"],
+    output: { bands: 1, sampleType: 'FLOAT32' }
+  };
+}
+
+let factor = 1 / 1000;
+function evaluatePixel(sample) {
+  return [sample.CH * factor]
+};
+

planetary-variables/crop-biomass/script.js

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+//VERSION=3
+function setup() {
+  return {
+    input: ["CB", "dataMask"],
+    output: { bands: 4, sampleTYPE: "AUTO" },
+  };
+}
+
+
+const bp_ramp = [
+  [0, 0xfff7ea],
+  [0.100, 0xf3e3c8],
+  [0.200, 0xdad0a4],
+  [0.300, 0xbdc082],
+  [0.400, 0x99b160],
+  [0.500, 0x6da242],
+  [0.600, 0x2c952e],
+  [0.7000, 0x008729],
+  [0.800, 0x007932],
+  [0.9000, 0x006640],
+  [1.000, 0x005444],
+];
+
+const visualizer = new ColorRampVisualizer(bp_ramp);
+
+let factor = 1 / 1000;
+function evaluatePixel(sample) {
+  let val = sample.CB * factor;
+  let imgVals = visualizer.process(val);
+  return [...imgVals, sample.dataMask]
+}
+