Summary
Creates matching tie points for a given ground control point and initial tie point in one of the overlapping images.
The ortho mapping block adjustment workflow often involves adding ground control points for a more accurate adjustment. One ground control point is typically associated with a tie point in each overlapping image. When there are many overlapping images for one ground control point, manually creating tie points for each image is labor intensive.
Usage
If the input control point set doesn't have a ground control point, the tool will fail.
If the input control point set has ground control points but no initial tie point, the tool will fail.
If no associated tie points are found, the input control point set remains unchanged, and a warning message appears that states no new tie points were found.
An input control point set can be a JSON string object that is a list of points as shown below.
Input control point sets
[ { "poinId": <id>, "x": "y": "z": "xyAccuracy": "zAccuracy": "spatialReference":{<spatialReference>}, // default WGS84 "imagePointSpatialReference": {}, // default ICS "imagePoints": [ {"imageId": "x": "y": }, … ] } ]
Syntax
arcpy.management.MatchControlPoints(in_mosaic_dataset, in_control_points, out_control_points, {similarity})
Parameter | Explanation | Data Type |
in_mosaic_dataset | The mosaic dataset that contains the source imagery from which the tie points will be created. | Mosaic Dataset; Mosaic Layer |
in_control_points | The input control point set that contains a list of ground control point features and at least one initial tie point for each ground control point. | File; Feature Class; Feature Layer; String |
out_control_points | The output control point features that contain ground control points. | Feature Class |
similarity (Optional) | Specifies the similarity level for matching tie points.
| String |
Code sample
This is a Python sample for the MatchControlPoints tool.
import arcpy
mdpath = "c:/omproject/dronecollection.gdb/droneimgs"
initpointset = "c:/omproject/initialgcpset.json"
arcpy.MatchControlPoints_management(mdpath, initpointset, out_control_points="c:/omproject/matchedpointsets.shp", similarity="HIGH")
This is a Python sample for the MatchControlPoints tool.
import arcpy
import json
mdpath = "c:/omproject/dronecollection.gdb/droneimgs"
initpointset = [
{
"x": -117.21684675264804,
"y": 34.052400694386705,
"z": 123,
"pointId": 1,
"imagePoints": [
{
"imageID": 7,
"x": -5635883367.549803,
"y": -26485513430.170017,
"u": -5635883367.549803,
"v": -26485513430.170017
}
]
}
]
arcpy.MatchControlPoints_management(
mdpath, in_control_points=json.dumps(initpointset), out_control_points="c:/omproject/matchedpointsets.shp", similarity="HIGH")
Environments
Licensing information
- Basic: No
- Standard: Yes
- Advanced: Yes