3.4.3.3. Multiple ROI Creation
This tab allows for the automatic creation of ROIs, useful for the rapid classification of multi-temporal images, or for accuracy assessment. Given a list of point coordinates and ROI options, this tool performs the region growing of ROIs. Created ROIs are automatically saved to the Training input. The active band set in Band set is used for calculations.
3.4.3.3.1. Create random points
3.4.3.3.2. Point coordinates and ROI definition
The table Point coordinates and ROI definition contains the following fields.
X |
Y |
MC ID |
MC Name |
C ID |
C Name |
Min |
Max |
Dist |
Rapid ROI band |
---|---|---|---|---|---|---|---|---|---|
point X coordinate (float) |
point Y coordinate (float) |
ROI Macroclass ID (int) |
ROI Macroclass Name (text) |
ROI Class ID (int) |
ROI Class Name (text) |
the minimum area of a ROI (in pixel unit) |
the maximum width of a ROI (in pixel unit) |
the interval which defines the maximum spectral distance between the seed pixel and the surrounding pixels (in radiometry unit) |
if a band number is defined, ROI is created only using the selected band, similarly to Rapid ROI band in ROI & Signature list |
The following tools are available.
Tool symbol and name |
Description |
---|---|
add a new row to the table; all the table fields must be filled for the ROI creation |
|
delete the highlighted rows from the table |
|
import a point list from text file or a point shapefile to the table;
in case of text file, every line must contain values separated by
tabs of |
|
export the point list to text file |
|
if checked, the spectral signature is calculated while the ROI is saved to Training input |
|
start the ROI creation process for all the points and save ROIs to the Training input |