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iTool User's Guide: Operations Properties |
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Region growing expands a selected area to include nearby pixels that fall within a threshold range of the current selection. See REGION_GROW for additional details. For a description of how a particular control is used, refer to Property Controls.
Property
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Control Type: Options
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Region grow method
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String List: The method used to select pixels that are similar to the current selection. Choose from these values:
where
Default = By threshold
|
Pixel search method
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String List: Specifies which pixels should be considered during region growing. Four-neighbor searching searches only the neighbors that are exactly one unit in distance from the current pixel; Eight-neighbor searching searches all neighboring pixels.
Choose from these values:
Default = 4-neighbor
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Threshold to use
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String List: Specifies the threshold values to use. Choose from these values:
Default = Source ROI/Image threshold
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Threshold minimum
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Number: The explicitly specified minimum threshold value. Default =
0
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Threshold maximum
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Number: The explicitly specified maximum threshold value. Default =
256
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Standard deviation multiplier
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Number: The number of standard deviations to use if the region growing method is By standard deviation. Default =
1
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For an RGB(A) image use
|
String List: If the image has separate color channels, use the selected channel when growing the region. Choose from these values:
Default = Luminosity
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IDL Online Help (March 01, 2006)