min1__ ( Image : ImageMin : MaskHeight, MaskWidth : )
Determine the minimum gray value within a rectangle.
min1__ calculates the minimum gray value of the input
image Image within a rectangular mask of size
(MaskHeight, MaskWidth) for each image point.
The resulting image is returned in ImageMin. If the
parameters MaskHeight or MaskWidth are even,
they are changed to the next larger odd value. At the border of the
image the gray values are mirrored.
Parameters
Image (input_object)
|
image(-array) -> object : byte / direction / int4 / real
|
Image for which the minimum gray values are to
be calculated. |
ImageMin (output_object)
|
image(-array) -> object : byte / direction / int4 / real
|
Image containing the minimum gray values. |
MaskHeight (input_control)
|
extent.y -> integer
|
Height of the filter mask. |
Default value: 11 |
Suggested values: 3, 5, 7, 9, 11, 13, 15 |
Range of values: 3 <= MaskHeight <= 511 (lin) |
Minimum increment: 2
|
Recommended increment: 2
|
Restriction: odd(MaskHeight) |
MaskWidth (input_control)
|
extent.x -> integer
|
Width of the filter mask. |
Default value: 11 |
Suggested values: 3, 5, 7, 9, 11, 13, 15 |
Range of values: 3 <= MaskWidth <= 511 (lin) |
Minimum increment: 2
|
Recommended increment: 2
|
Restriction: odd(MaskWidth) |
Result
min1__ returns TRUE if all parameters are correct.
If the input is empty the behaviour can be set via
set_system(::'no_object_result',<Result>:).
If necessary, an exception is raised.
See also
max1__
Copyright © 1996-1997 MVTec Software GmbH