sub__ ( ImageMinuend, ImageSubtrahend : ImageSub : Mult, Add : )
Subtract two images.
The operator sub__ subtracts two images. The gray values
(g1,g2)
g' := (g1 - g2) * Mult + Add
Parameters
ImageMinuend (input_object)
|
image(-array) -> object : byte / int1 / int2 / int4 / real / direction / cyclic / complex
|
Minuend |
ImageSubtrahend (input_object)
|
image(-array) -> object : byte / int1 / int2 / int4 / real / direction / cyclic / complex
|
Subtrahend |
ImageSub (output_object)
|
image(-array) -> object : byte / int1 / int2 / int4 / real / direction / cyclic / complex
|
Image containing the result. |
Mult (input_control)
|
number -> real / integer
|
Correction factor |
Default value: 1.0 |
Suggested values: 0.0, 1.0, 2.0, 3.0, 4.0 |
Range of values: -255.0 <= Mult <= 255.0 |
Minimum increment: 0.001
|
Recommended increment: 0.1
|
Add (input_control)
|
number -> real / integer
|
Correction value |
Default value: 128.0 |
Suggested values: 0.0, 128.0, 256.0 |
Range of values: -512.0 <= Add <= 512.0 |
Minimum increment: 0.01
|
Recommended increment: 1.0
|
Example
read_image(:Image0:"fabrik":)>
disp_image(Image0:::)>
read_image(:Image1:"Affe":)>
disp_image(Image1:::)>
sub__(Image0,Image1:Result:2.0,10.0:)>
disp_image(Result:::)>
Result
The operator add__ returns the value TRUE if the
parameters are correct. The behavior in case of empty input (no
input images available) is set via the operator
set_system(::'no_object_result',<Result>:)
If necessary an exception is raised.
Alternatives
mult__,
add__,
sub__
See also
add__,
mult__
Copyright © 1996-1997 MVTec Software GmbH