Adding Active fire detection script

Author: Monja Šebela

README.md

@@ -137,6 +137,7 @@ Dedicated to supplying data for [Copernicus services](http://www.esa.int/Our_Act
  - [Multitemporal burnt area analysis](sentinel-2/burned_area)
  - [Wildfire visualization](sentinel-2/markuse_fire) (by Pierre Markuse, taken from his [blog post](https://pierre-markuse.net/2017/08/07/visualizing-wildfires-sentinel-2-imagery-eo-browser/){:target="_blank"})
  - [Burned Area Visualization](sentinel-2/burned_area_ms)
+ - [Active Fire Detection](sentinel-2/active_fire_detection)
 
 #### Land use/cover classification algorithms
  - [False Color Composite](sentinel-2/false_color_composite)

sentinel-2/active_fire_detection/README.md

@@ -0,0 +1,39 @@
+# Active Fire Detection
+
+<a href="#" id='togglescript'>Show</a> script or [download](script.js){:target="_blank"} it.
+<div id='script_view' style="display:none">
+{% highlight javascript %}
+      {% include_relative script.js %}
+{% endhighlight %}
+</div>
+
+## Evaluate and visualize
+ - [Sentinel Playground](https://apps.sentinel-hub.com/sentinel-playground/?source=S2&lat=37.5671449422705&lng=-119.72414017072879&zoom=13&preset=CUSTOM&layers=B01,B02,B03&maxcc=20&gain=1.0&gamma=1.0&time=2018-02-01%7C2018-08-05&atmFilter=&showDates=false&evalscript=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%2BMC40KXx8KEIxMj4xKSl7CiAgcmV0dXJuWzIwKkIwNCwgMSpCMDMsIDEqQjAyXTsKfQoKZWxzZSB7CiByZXR1cm4gW0IwNCxCMDQsQjA0XQp9CgovL1JlZCBjb2xvciBpbmRpY2F0ZXMgYWN0aXZlIGZpcmUgYXJlYXMgYW5kIHBvaW50cwovL1RoZSBibHVlIHJhbmdlIGlzIGEgY2xvdWQgbWFzaw%3D%3D){:target="_blank"}
+ - [EO Browser](https://apps.sentinel-hub.com/eo-browser/?zoom=11&lat=37.67429&lng=-119.76883&themeId=WILDFIRES-NORMAL-MODE&datasetId=S2L2A&fromTime=2018-08-05T00%3A00%3A00.000Z&toTime=2018-08-05T23%3A59%3A59.999Z&visualizationUrl=https%3A%2F%2Fservices.sentinel-hub.com%2Fogc%2Fwms%2Faae18701-6b25-4001-8b2a-b98a1b3806c1&evalscript=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%2BMC40KXx8KEIxMj4xKSl7CiAgcmV0dXJuWzIwKkIwNCwgMSpCMDMsIDEqQjAyXTsKfQoKZWxzZSB7CiByZXR1cm4gW0IwNCxCMDQsQjA0XQp9CgovL1JlZCBjb2xvciBpbmRpY2F0ZXMgYWN0aXZlIGZpcmUgYXJlYXMgYW5kIHBvaW50cwovL1RoZSBibHVlIHJhbmdlIGlzIGEgY2xvdWQgbWFzaw%3D%3D&upsampling=BILINEAR#custom-script){:target="_blank"}
+
+## General description
+
+The script identifies active fire points, offering valuable information for monitoring fire spots in any area. The data output of this script is equivalent to generating an online database of active fire points, such as firms.modaps.eosdis.nasa.gov, but for a smaller range and with a time interval of once every 5 days.
+
+## Author of the script
+
+ - [Tiznger startup co](www.tiznegar.com)
+
+## Description of representative images
+
+[California wildfires, 2018](https://apps.sentinel-hub.com/eo-browser/?zoom=11&lat=37.67429&lng=-119.76883&themeId=WILDFIRES-NORMAL-MODE&datasetId=S2L2A&fromTime=2018-08-05T00%3A00%3A00.000Z&toTime=2018-08-05T23%3A59%3A59.999Z&visualizationUrl=https%3A%2F%2Fservices.sentinel-hub.com%2Fogc%2Fwms%2Faae18701-6b25-4001-8b2a-b98a1b3806c1&evalscript=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%2BMC40KXx8KEIxMj4xKSl7CiAgcmV0dXJuWzIwKkIwNCwgMSpCMDMsIDEqQjAyXTsKfQoKZWxzZSB7CiByZXR1cm4gW0IwNCxCMDQsQjA0XQp9CgovL1JlZCBjb2xvciBpbmRpY2F0ZXMgYWN0aXZlIGZpcmUgYXJlYXMgYW5kIHBvaW50cwovL1RoZSBibHVlIHJhbmdlIGlzIGEgY2xvdWQgbWFzaw%3D%3D&upsampling=BILINEAR#custom-script), acquired on August 5, 2019, processed by Sentinel Hub.
+
+![California wildfire](fig/fig1.png)
+
+[Croatia wildfires, 2017](https://apps.sentinel-hub.com/eo-browser/?zoom=11&lat=43.4918&lng=16.619&themeId=WILDFIRES-NORMAL-MODE&datasetId=S2L2A&fromTime=2017-07-17T00%3A00%3A00.000Z&toTime=2017-07-17T23%3A59%3A59.999Z&visualizationUrl=https%3A%2F%2Fservices.sentinel-hub.com%2Fogc%2Fwms%2Faae18701-6b25-4001-8b2a-b98a1b3806c1&evalscript=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%2BMC40KXx8KEIxMj4xKSl7CiAgcmV0dXJuWzIwKkIwNCwgMSpCMDMsIDEqQjAyXTsKfQoKZWxzZSB7CiByZXR1cm4gW0IwNCxCMDQsQjA0XQp9CgovL1JlZCBjb2xvciBpbmRpY2F0ZXMgYWN0aXZlIGZpcmUgYXJlYXMgYW5kIHBvaW50cwovL1RoZSBibHVlIHJhbmdlIGlzIGEgY2xvdWQgbWFzaw%3D%3D&upsampling=BILINEAR#custom-script), acquired on July 17, 2017, processed by Sentinel Hub.
+
+![Croatia wildfire](fig/fig2.png)
+
+[Australia wildfires, 2019] (https://apps.sentinel-hub.com/eo-browser/?zoom=12&lat=-21.9374&lng=116.6572&themeId=WILDFIRES-NORMAL-MODE&datasetId=S2L2A&fromTime=2019-01-05T00%3A00%3A00.000Z&toTime=2019-01-05T23%3A59%3A59.999Z&visualizationUrl=https%3A%2F%2Fservices.sentinel-hub.com%2Fogc%2Fwms%2Faae18701-6b25-4001-8b2a-b98a1b3806c1&evalscript=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%2BMC40KXx8KEIxMj4xKSl7CiAgcmV0dXJuWzIwKkIwNCwgMSpCMDMsIDEqQjAyXTsKfQoKZWxzZSB7CiByZXR1cm4gW0IwNCxCMDQsQjA0XQp9CgovL1JlZCBjb2xvciBpbmRpY2F0ZXMgYWN0aXZlIGZpcmUgYXJlYXMgYW5kIHBvaW50cwovL1RoZSBibHVlIHJhbmdlIGlzIGEgY2xvdWQgbWFzaw%3D%3D&upsampling=BILINEAR#custom-script), acquired on January 5, 2019, processed by Sentinel Hub.
+
+![Australia wildfire](fig/fig3.png)
+
+
+
+
+

sentinel-2/active_fire_detection/fig/fig1.png

@@ -0,0 +1,31 @@
+//Identify active fire points
+//by Tiznger startup co
+//www.tiznegar.com
+
+//To increase the accuracy of altitude <3km Or zoom >12
+//For Sentinel-2
+//Cloud mask
+
+var NGDR = index(B02, B03);
+var Inverse = (B02 - 0.2) / (0.5 - 0.2);
+//Fire indicator
+var SAHM_INDEX= ((B12 - B11) / (B12 + B11));
+
+if (Inverse > 1) { 
+    return [0.5 * B04, 0.5 * B03, 20 * B02 ];
+}
+
+if (Inverse > 0 && NGDR>0) { 
+    return [0.5 * B04  , 0.5 * B03, 20 * B02];
+}
+
+if((SAHM_INDEX>0.4)||(B12>1)){
+  return[20*B04, 1*B03, 1*B02];
+}
+
+else {
+ return [B04,B04,B04]
+}
+
+//Red color indicates active fire areas and points
+//The blue range is a cloud mask