Replacing pixel/voxel value in images
From MIPAV
Revision as of 16:09, 15 February 2012 by Angelfish100 (Talk)
Replacing pixel/voxel value in images
You can replace the values of pixels or voxels in images by using the Replace pixel/voxel values command on the Utilities menu. Suppose, for example, that you have a set of images that contain not a number (NaN) values. To be able to use MIPAV algorithms on those images, you first need to replace those not a number values. The Replace pixel/voxel value command provides an easy way to replace those values or any pixel or voxel values.
To replace pixel or voxel value in images
1 Open the image whose pixels or voxels you want to change.
2 Select Utilities > Replace pixel/voxel values.
The Replace Pixel/Voxel Value dialog box ([MIPAV_Utilities.html#1184679 Figure 272]) opens.
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User-defined value
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Specifies the value that you want to replace in the image.
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{| align="center" |
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Presets
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NaN-Not a number.
-Positive infinity.
-Negative infinity.|- |
Replace with
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Accept the default value or type another value.
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New image
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Shows in a new image window the image in which the value was replaced.
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Replace image
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Replaces the current image with the image in which the value was replaced.
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OK
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Applies the parameters that you specified to subsample the image.
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Cancel
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Disregards any changes you made in this dialog box, closes the dialog box, and does not subsample the image.
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Help
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Displays online help for this dialog box.
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3 Do one of the following:
a Select User defined value and type the value that you want to replace in the text box
b Select Presets and then select one of the following in the list box:
NaN-Not a number
-Positive infinity -Negative infinity 4 Do one of the following:
Accept the default value in Replace with.
Type another value in the text box.
5 Select one of the following:
New image-To create a new image in its own image window using the replaced value
Replace image-To overwrite the original image in the original image window with an image using the replaced value
6 Click OK. The image with the replaced value appears in either a new window or in the original image window.
