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Repairing Artifacts and Cosmetic Defects
Various cosmetic repair tools are available to
correct blemishes and other artifacts in images. Choose from the
commands below to address various types of defects. The appropriate
method depends on the defect's nature, whether it occurs at fixed
or arbitrary locations in different images, and whether the defects
are isolated or in groups. Additionally, scripts may be developed
to apply custom repair strategies.
Choosing a Repair Method based on the Defect Type
The table below matches the defect type and
location to a command for correcting it.
Cosmetic Repair Commands
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Apply Blemish Mask
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Repairs lines and rectangular regions that are
always located at the same locations, including hot columns, cold
traps, and blemishes larger than 1 pixel in area.
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Apply Pixel Mask
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Repairs isolated pixels using coordinates loaded
from a file containing x,y positions of the bad pixels. Use this
for repairing pixels that always are located at the same locations,
such as hot or cold pixels.
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Combine Image Set
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Defects that do not repeat among image set members
are removed by combining with a rejection or median method and
normalization. For details, see
Combine Image Set and
Image Combining Strategies.
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Clean Image Set
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Detects and repairs transient defects that vary in
location, such as cosmic ray and ionizing radiation events.
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Cosmic Ray Filter
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Automatically detects and repairs isolated pixels
and small clusters of hot pixels caused by cosmic rays and ionizing
radiation.
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Create Pixel Mask
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Used to create a pixel mask by detecting isolated
pixels that have very high or low values.
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Edit Blemish Mask
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Creates and edits a blemish mask (a text-based
description of blemish locations).
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Edit Pixel Mask
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Edits an existing pixel mask or creates new a
pixel mask by entering coordinates into a grid.
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Interactive Repair
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Used to interactively identify and repair pixels
using mouse clicks and a marking cursor.
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Star Removal
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Used to remove stars from the image. This is
typically used before doing photometry on the image.
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Related Topics
Contents
Image Combining Properties
Calibrating Images
Filtering Images
Combine Image Set command
Image Sets
Mira Pro x64 8.83 User's Guide, Copyright Ⓒ 2026 Mirametrics, Inc.
All Rights Reserved.
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