Label | Explanation | Data Type |
Input Mosaic Dataset
| The input mosaic dataset that will be used to create tie points. | Mosaic Layer; Mosaic Dataset |
Output Control Points
| The output control point table. The table will contain the tie points created by this tool. | Feature Class |
Similarity
(Optional) | Specifies the similarity level that will be used for matching tie points.
| String |
Input Mask
(Optional) | A polygon feature class used to exclude areas that will not be included in the computation of control points. A field with a name of mask can control the inclusion or exclusion of areas. A value of 1 indicates that the areas defined by the polygons (inside) will be excluded from the computation. A value of 2 indicates the defined polygons (inside) will be included in the computation while areas outside of the polygons will be excluded. | Feature Layer |
Output Image Features (Optional) | The output image feature points table. This will be saved as a polygon feature class. This output can be quite large. | Feature Class |
Point Density
| Specifies the number of tie points to be created.
| String |
Point Distribution
| Specifies whether the points will have regular or random distribution.
| String |
Image Location Accuracy
| Specifies the keyword that describes the accuracy of the imagery.
| String |
Additional Options (Optional) | Additional options for the adjustment engine. The options are only used by third-party adjustment engines. | Value Table |
Summary
Computes the tie points between overlapped mosaic dataset items. The tie points can then be used to compute the block adjustments for the mosaic dataset.
Usage
The tie points can be combined with control points using the Append Control Points tool.
The tie points and the optional control points are then used as the inputs for the Compute Block Adjustment tool.
If you have a mosaic dataset with many items, use caution when specifying the Output Image Features parameter value, since the result may take a long time to process.
Parameters
arcpy.management.ComputeTiePoints(in_mosaic_dataset, out_control_points, {similarity}, {in_mask_dataset}, {out_image_features}, density, distribution, location_accuracy, {options})
Name | Explanation | Data Type |
in_mosaic_dataset | The input mosaic dataset that will be used to create tie points. | Mosaic Layer; Mosaic Dataset |
out_control_points | The output control point table. The table will contain the tie points created by this tool. | Feature Class |
similarity (Optional) | Specifies the similarity level that will be used for matching tie points.
| String |
in_mask_dataset (Optional) | A polygon feature class used to exclude areas that will not be included in the computation of control points. A field with a name of mask can control the inclusion or exclusion of areas. A value of 1 indicates that the areas defined by the polygons (inside) will be excluded from the computation. A value of 2 indicates the defined polygons (inside) will be included in the computation while areas outside of the polygons will be excluded. | Feature Layer |
out_image_features (Optional) | The output image feature points table. This will be saved as a polygon feature class. This output can be quite large. | Feature Class |
density | Specifies the number of tie points to be created.
| String |
distribution | Specifies whether the points will have regular or random distribution.
| String |
location_accuracy | Specifies the keyword that describes the accuracy of the imagery.
| String |
options [options,...] (Optional) | Additional options for the adjustment engine. The options are only used by third-party adjustment engines. | Value Table |
Code sample
This is a Python sample for the ComputeTiePoints function.
import arcpy
arcpy.ComputeTiePoints_management("c:/workspace/BD.gdb/redQB",
"c:/workspace/BD.gdb/redQB_tiePoints", "MEDIUM")
This is a stand-alone script sample for the ComputeTiePoints function.
#compute tie points
import arcpy
arcpy.env.workspace = "c:/workspace"
#Compute tie points for a mosaic dataset
mdName = "BD.gdb/redlandsQB"
out_tiePoint = "BD.gdb/redlandsQB_tiePoints"
arcpy.ComputeTiePoints_management(mdName, out_tiePoint, "MEDIUM")
Environments
Licensing information
- Basic: No
- Standard: Yes
- Advanced: Yes