NAME¶
vcrop - crop an image
SYNOPSIS¶
vcrop [
-option ...] [
infile] [
outfile]
DESCRIPTION¶
vcrop crops a file of images using a cropping rectangle specified by
command line options.
COMMAND LINE OPTIONS¶
vcrop accepts the following options:
- -help
- Prints a message describing options.
- -in infile
- Specifies a Vista data file containing the input
images.
- -out outfile
- Specifies where to write the cropped images as a Vista data
file.
- -top row
- Specifies the first (top) row of the cropping
rectangle.
- -bottom row
- Specifies the last (bottom) row of the cropping
rectangle.
- -left col
- Specifies the first (leftmost) column of the cropping
rectangle.
- -right col
- Specifies the last (rightmost) column of the cropping
rectangle.
- -height nrows
- Specifies the height of the cropping rectangle.
- -width ncols
- Specifies the width of the cropping rectangle.
The cropping rectangle must be unambiguously specified by using any two of
-top,
-bottom, and
-height, plus any two of
-left,
-right, and
-width.
The cropping rectangle may fall partially or completely outside an image it is
cropping; in that case, the area outside is filled with zeros.
Input and output files can be specified on the command line or allowed to
default to the standard input and output streams.
SEE ALSO¶
vxcrop(1Vi),
VImage(3Vi),
Vista(7Vi)
AUTHOR¶
Ralph Horstmann <horstman@cs.ubc.ca>