When you need to manually add or edit tie points to improve geometric accuracy, you can use the Manage Tie Points function.
For operations on adding, modifying, and deleting points, please refer to Point Editing. This topic focuses on the filtering, searching, and sorting functions of tie points.
This function is only available when there is a join point dataset in the current workflow.
Function Entry
Satellite Image Processing Tab ->Geometric Correction Group ->Generate Tie Points Drop-down Menu ->Manage Tie Points.
Filter
Click the Filter button on the toolbar, which provides the following three filtering methods to filter the tie point records generated in the attribute table.
- Overview map range: The attribute table only displays the tie point records visible in the overview map. When the overview map is closed, executing the filter operation will display all tie points by default.
- Match image: Check one or more images, and the attribute table will display the tie point attributes associated with the specified images.
- SQL Expressions: Select this option, click the button on the right to set an SQL filter expression, or directly enter the expression in the input box. The attribute table will display the control point attributes that meet the expression condition.
Search
The toolbar provides a search box that supports direct keyword input for fast retrieval, helping you quickly locate the desired content and improve query efficiency.
Sort
Supports sorting the attribute table records in ascending or descending order by a specified field, facilitating browsing and analysis. The operation method is as follows:
- Click any cell in the attribute table to select the column to be sorted.
- Click the "Ascending" or "Descending" button on the toolbar to complete the sorting of that column.
Related Topics
Generate Ground Control Points