The main interface of SatCO2 system is shown in Figure 2-1. The home screen consists of six parts in the order of annotated numbers as follows: 1. Menu bar; 2. Target layer; 3. Layer control panel; 4. Display window; 5. Product color-bar; and 6. Output window (showing results of query, analysis, and calculation).
1) Menu bar: main function operation button.
2) Target layer: select the target image to be processed from the currently loaded image. In general, the system defaults to the latest loaded image (the top layer in the layer control panel) as the target layer.
3) Layer control panel: display the layer data that have been loaded into the 3D geosphere. Left-click to display/hide the layer, right-click to set the top/remove the layer, and double-click layer name to zoom the view to default if it is too large or too small.
4) Display window: layer display and the main window for operation. Users can rotate the geosphere using the mouse.
5) Product color-bar: set the corresponding color label for the currently selected layer. It can be set manually to display or be closed.
6) Output window: output query/calculation results.
Figure 2 1. Main screen
