RETRO commands
PROGRAM NAME
vtilt - Add a Specified Illumination Gradient Plane to Image (K1)
DESCRIPTION
vtilt
adds tilt to an image.
Often an image will have a skew in the grey level values that represents
a plane with a certain slope. The tilt takes the form of a plane which has
an x and y zero crossing at the center of the image with x an y slope
as specified in the argument list. The x and y slopes
must be given in units per pixel and the x and y values default to 0.0.
The optional mask image (-m) must be of the same data type as the input images,
and is used to gate the operation. A non-zero mask pixel enables the output
pixel to contain the adjusted value. A zero mask pixel just transfers
the value of the corresponding pixel in the first input image to the output
pixel.
REQUIRED ARGUMENTS
- -i
-
type: infile
desc: input image
- -o
-
type: outfile
desc: resulting output image
OPTIONAL ARGUMENTS
- -m
-
type: infile
desc: tilt operation masking image
default: {none}
- -x
-
type: float
desc: specifies the slope in the X direction
default: 0
bounds: no range checking
- -y
-
type: float
desc: specifies the slope in the Y direction
default: 0
bounds: no range checking
EXAMPLES
vtilt -i image -o out -x 2 -y -1
SEE ALSO
vgettilt, lvgettilt, vdetilt
RESTRICTIONS
vtilt
will not operate on COMPLEX or BIT data storage types.
REFERENCES
COPYRIGHT
Copyright (C) 1993 - 1997, Khoral Research, Inc. ("KRI") All rights reserved.