lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin Class Reference
Inheritance diagram for lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin:
Public Member Functions | |
| getExecutionOrder (cls) | |
| __init__ (self, config, name, schema, metadata, logName=None) | |
| measure (self, measRecord, exposure) | |
| fail (self, measRecord, error=None) | |
Public Attributes | |
| keyXC | |
| keyYC | |
| keyX0 = schema.addField(name + "_x0", type="D", doc="Trail head X coordinate.", units="pixel") | |
| keyY0 = schema.addField(name + "_y0", type="D", doc="Trail head Y coordinate.", units="pixel") | |
| keyX1 = schema.addField(name + "_x1", type="D", doc="Trail tail X coordinate.", units="pixel") | |
| keyY1 = schema.addField(name + "_y1", type="D", doc="Trail tail Y coordinate.", units="pixel") | |
| keyLength = schema.addField(name + "_length", type="D", doc="Length of trail.", units="pixel") | |
| keyTheta = schema.addField(name + "_angle", type="D", doc="Angle of trail from +x-axis.") | |
| keyFlux = schema.addField(name + "_flux", type="D", doc="Trailed source flux.", units="count") | |
| keyRChiSq = schema.addField(name + "_rChiSq", type="D", doc="Reduced chi-squared of fit") | |
| FAILURE = flagDefs.addFailureFlag("No trailed-sources measured") | |
| NON_CONVERGE = flagDefs.add("flag_nonConvergence", "Optimizer did not converge") | |
| NO_NAIVE = flagDefs.add("flag_noNaive", "Naive measurement contains NaNs") | |
| flagHandler = FlagHandler.addFields(schema, name, flagDefs) | |
| centroidExtractor = SafeCentroidExtractor(schema, name) | |
Static Public Attributes | |
| ConfigClass = SingleFrameVeresTrailConfig | |
Detailed Description
Veres trailed source characterization plugin.
Measures the length, angle, flux, centroid, and end points of a trailed
source using the Veres et al. 2012 model [1]_.
Parameters
----------
config: `SingleFrameNaiveTrailConfig`
Plugin configuration.
name: `str`
Plugin name.
schema: `lsst.afw.table.Schema`
Schema for the output catalog.
metadata: `lsst.daf.base.PropertySet`
Metadata to be attached to output catalog.
Notes
-----
This plugin is designed to refine the measurements of trail length,
angle, and end points from `NaivePlugin`, and of flux and centroid from
previous measurement algorithms. Vereš et al. 2012 [1]_ derive a model for
the flux in a given image pixel by convolving an axisymmetric Gaussian with
a line. The model is parameterized by the total flux, trail length, angle
from the x-axis, and the centroid. The best estimates are computed using a
chi-squared minimization.
References
----------
.. [1] Vereš, P., et al. "Improved Asteroid Astrometry and Photometry with
Trail Fitting" PASP, vol. 124, 2012.
See also
--------
lsst.meas.base.SingleFramePlugin
Definition at line 52 of file VeresPlugin.py.
Constructor & Destructor Documentation
◆ __init__()
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.__init__ | ( | self, | |
| config, | |||
| name, | |||
| schema, | |||
| metadata, | |||
| logName = None ) |
Definition at line 97 of file VeresPlugin.py.
Member Function Documentation
◆ fail()
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.fail | ( | self, | |
| measRecord, | |||
| error = None ) |
Record failure See also -------- lsst.meas.base.SingleFramePlugin.fail
Definition at line 187 of file VeresPlugin.py.
◆ getExecutionOrder()
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.getExecutionOrder | ( | cls | ) |
Definition at line 92 of file VeresPlugin.py.
◆ measure()
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.measure | ( | self, | |
| measRecord, | |||
| exposure ) |
Run the Veres trailed source measurement plugin.
Parameters
----------
measRecord : `lsst.afw.table.SourceRecord`
Record describing the object being measured.
exposure : `lsst.afw.image.Exposure`
Pixel data to be measured.
See also
--------
lsst.meas.base.SingleFramePlugin.measure
Definition at line 121 of file VeresPlugin.py.
Member Data Documentation
◆ centroidExtractor
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.centroidExtractor = SafeCentroidExtractor(schema, name) |
Definition at line 119 of file VeresPlugin.py.
◆ ConfigClass
|
static |
Definition at line 89 of file VeresPlugin.py.
◆ FAILURE
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.FAILURE = flagDefs.addFailureFlag("No trailed-sources measured") |
Definition at line 114 of file VeresPlugin.py.
◆ flagHandler
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.flagHandler = FlagHandler.addFields(schema, name, flagDefs) |
Definition at line 117 of file VeresPlugin.py.
◆ keyFlux
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyFlux = schema.addField(name + "_flux", type="D", doc="Trailed source flux.", units="count") |
Definition at line 110 of file VeresPlugin.py.
◆ keyLength
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyLength = schema.addField(name + "_length", type="D", doc="Length of trail.", units="pixel") |
Definition at line 108 of file VeresPlugin.py.
◆ keyRChiSq
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyRChiSq = schema.addField(name + "_rChiSq", type="D", doc="Reduced chi-squared of fit") |
Definition at line 111 of file VeresPlugin.py.
◆ keyTheta
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyTheta = schema.addField(name + "_angle", type="D", doc="Angle of trail from +x-axis.") |
Definition at line 109 of file VeresPlugin.py.
◆ keyX0
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyX0 = schema.addField(name + "_x0", type="D", doc="Trail head X coordinate.", units="pixel") |
Definition at line 104 of file VeresPlugin.py.
◆ keyX1
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyX1 = schema.addField(name + "_x1", type="D", doc="Trail tail X coordinate.", units="pixel") |
Definition at line 106 of file VeresPlugin.py.
◆ keyXC
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyXC |
Initial value:
= schema.addField(
name + "_centroid_x", type="D", doc="Trail centroid X coordinate.", units="pixel")
Definition at line 100 of file VeresPlugin.py.
◆ keyY0
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyY0 = schema.addField(name + "_y0", type="D", doc="Trail head Y coordinate.", units="pixel") |
Definition at line 105 of file VeresPlugin.py.
◆ keyY1
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyY1 = schema.addField(name + "_y1", type="D", doc="Trail tail Y coordinate.", units="pixel") |
Definition at line 107 of file VeresPlugin.py.
◆ keyYC
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.keyYC |
Initial value:
= schema.addField(
name + "_centroid_y", type="D", doc="Trail centroid Y coordinate.", units="pixel")
Definition at line 102 of file VeresPlugin.py.
◆ NO_NAIVE
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.NO_NAIVE = flagDefs.add("flag_noNaive", "Naive measurement contains NaNs") |
Definition at line 116 of file VeresPlugin.py.
◆ NON_CONVERGE
| lsst.meas.extensions.trailedSources.VeresPlugin.SingleFrameVeresTrailPlugin.NON_CONVERGE = flagDefs.add("flag_nonConvergence", "Optimizer did not converge") |
Definition at line 115 of file VeresPlugin.py.
The documentation for this class was generated from the following file:
- python/lsst/meas/extensions/trailedSources/VeresPlugin.py
Generated on Sat Apr 18 2026 08:52:36 for lsst.meas.extensions.trailedSources by
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