RMS_EDGE
Name
RMS_EDGE
Purpose
This function accepts two images, original and altered. The
two images must have the same dimensions. The original image
is converted to luminance, and then an edge mask is
calculated. The edge mask is found by applying a gradient
operator, applying a threshold, and then dilating the result.
The edge mask is applied to both input images, and the RMS
deviation is found for each channel separately.
Category
Statistics.
Calling Sequence
Result = RMS_EDGE( original, altered )
Inputs
original
A color or greyscale image to serve as the reference.
mean
A color or greyscale image to be compared to the reference.
Keyword Parameters
None
Return Value
Result is either a scalar (if provided input were greyscale
images) or a 3-element vecotr (if provided input were color
images) containing the individual band RMS value in the vicinity
of edges.
:ERROR CHECKING:
RETURN, -1
if no significant edges with magnitude greater than the
threshold could be found
Side Effects
None
Modification History
Written by: Juliet Bernstein
December, 2007 Original code
September, 2012 Converted to a general-purpose routine (Carl Salvaggio)
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whether to use this source code.
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relying on it. The user must assume the entire risk of using the source code.