Summary
This tool is used to compute the adjustments to the mosaic dataset. This tool will create a solution table that can be used to apply the actual adjustments.
Usage
Use the output control points from the Compute Tie Points tool as the input control points for this tool.
The output solution table from this tool will be used in the Apply Block Adjustment tool.
The tool requires the ArcGIS Desktop Advanced license when your Transformation Type is RPC or Frame.
Syntax
arcpy.management.ComputeBlockAdjustment(in_mosaic_dataset, in_control_points, transformation_type, out_solution_table, {out_solution_point_table}, {maximum_residual_value}, {adjustment_options}, {location_accuracy}, {out_quality_table})| Parameter | Explanation | Data Type |
in_mosaic_dataset | The input mosaic dataset that will be adjusted. | Mosaic Layer; Mosaic Dataset |
in_control_points | The control point table that includes tie points and ground control points. This is usually the output from the Compute Tie Points tool. | Feature Layer |
transformation_type | The type of transformation that will be used when adjusting the mosaic dataset.
| String |
out_solution_table | The output solution table containing the adjustments. | Table |
out_solution_point_table (Optional) | The output solution points table. This will be saved as a polygon feature class. This output can be quite large. | Feature Class |
maximum_residual_value (Optional) | A threshold that is used in block adjustment computation; points with residuals exceeding the threshold will not be used. This parameter applies when the transformation type is POLYORDER0, POLYORDER1, or Frame. If the transformation is RPC, the proper threshold for eliminating invalid points will be automatically determined. When the transformation is POLYORDER0 or POLYORDER1 the units for this parameter will be in map units, and the default value will be 2. When the transformation is Frame the units for this parameter will be in pixels, and the default value will be 5. | Double |
adjustment_options [[name, value],...] (Optional) | Additional options that can fine-tune the adjustment computation.
| Value Table |
location_accuracy (Optional) | Specifies the geometric accuracy level of the images.
If LOW accuracy is specified, the control points will first be improved by an initial triangulation; then they will be used in the block adjustment calculation. The medium and high accuracy do not require any additional estimation processing. | String |
out_quality_table (Optional) | An output table used to store adjustment quality information. This parameter is only valid if RPC was specified as the transformation_type. | Table |
Code sample
This is a Python sample for the ComputeBlockAdjustment tool.
import arcpy
arcpy.ComputeBlockAdjustment_management(
"c:/BD/BD.gdb/redQB", "c:/BD/BD.gdb/redQB_tiePoints",
"POLYORDER1", "c:/BD/BD.gdb/redQB_solution")This is a Python script sample for the ComputeBlockAdjustment tool.
#compute block adjustment, case 2
import arcpy
arcpy.env.workspace = "c:/workspace"
#Compute block adjustment
mdName = "BD.gdb/redlandsQB"
in_controlPoint = "BD.gdb/redlandsQB_tiePoints"
out_solutionTable = "BD.gdb/redlandsQB_solution"
arcpy.ComputeBlockAdjustment_management(mdName, in_controlPoint,
"POLYORDER1", out_solutionTable)This is a Python script sample for the ComputeBlockAdjustment tool.
#compute block adjustment, case 3
import arcpy
arcpy.env.workspace = "c:/workspace"
#Compute block adjustment specifying an output point table and
#an setting an adjustment option
mdName = "BD.gdb/redlandsQB"
in_controlPoint = "BD.gdb/redlandsQB_tiePoints"
out_solutionTable = "BD.gdb/redlandsQB_solution"
out_solutionPoint = "BD.gdb/redlandsQB_solutionPoint"
engineOption = "_BAI c:/workspace/bai.txt; _BAO c:/workspace/bao.txt"
arcpy.ComputeBlockAdjustment_management(mdName, in_controlPoint,
"POLYORDER1", out_solutionTable, out_solutionPoint,"0.5",
engineOption)Environments
Licensing information
- Basic: No
- Standard: Yes
- Advanced: Yes