The forest change detection algorithm will be updated from the current version 2.1 to version 3.0 on June 5, 2020.

The new version can detect deforestation of smaller size (> 2 ha).

"Algorithm Ver" and "Threshold" have been added to the polygon attributes.

The "Threshold" indicates an area applied from the eight threshold combinations of version 3.

For more details, please refer to the JJ-FAST technical note.

The web system has also been updated to show the version and area applied for each data.