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Shift Image
The Shift Image command applies a precision
shift to an
Image Set or a single image. The shift moves the
image values on the underlying coordinate system. The shifts\
values may be any number of whole pixels or decimal portions
thereof.
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The Shift Image command opens from the
Image Window > Process >
Geometry menu and  button on the Main Toolbar. The "immediate" form, shown first,
opens when an image or image set is displayed in the top-most
window. The general form can be used to select source images from
folders, windows, or by matching templates.
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Shift Image Properties
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Profile [|>]
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Selects the parameter profile for this command and
allows you to save or work with existing presets.
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[Select]
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Opens the
Select Source Images dialog to choose images from an
image window, folder, files, name template, or a Mira File
List.
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X
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The shift in pixels along the horizontal
direction.
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Y
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The shift in pixels along the vertical
direction.
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Edge Replacement
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This group specifies how blank pixels are filled
with a value when the shifted image exposes blank pixels.
Target Value fills the
blank area with the specifiedValue.
Image Margin fills the
blank area with a value typical of pixels along the image
margin.
Value is the specific
value to set when the Target Value
option is selected.
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Value
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Specifies the value assigned to the blank area
when the Edge Replacement method is
Target Value.
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Shift Directions
The signs of the shift values are taken as positive
if the image is moved in the direction of increasing coordinate
value. For the different formats, this can appear differently on
the screen. For a FITS image, X and Y increase to the right and
upward, respectively. For the other graphics format images, X and Y
increase to the right and downward. You can tell which direction
things will move my roaming the mouse pointer over the image and
noting which direction the coordinates increase.
Edge Replacement
The "edge" refers to the blank pixels that rotate
into the output image from off the edge of the original image.
These pixels have no value but something must be done with them.
Mira give you two options for assigning them a value:
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Use the typical value for pixels near the margin
of the original image, or
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Assign a specific edge value, such as 0.
Related Topics
Image Geometry Commands
Scale Image
Rotate Image
Affine Transformation
Mira Pro x64 User's Guide, Copyright Ⓒ 2023 Mirametrics, Inc. All
Rights Reserved.
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