vxto − change image format from VisionX format

vxto format [if=infile] [of=ofile] [-v] [l=<value>] [h=<value>] [f=value] [e=<value>] [-Z] [-gz] [conv=command]

Vxto converts an image file (or a set of image files) in VisionX image format into a specified standard file format.

Image sequences in many file formats (not VisionX) are often represented by a set of files in which the file names differ in a numeric field. In the future, vxto will permit a sequence of output files to be specified with the following syntax <prefix><numeric-field><extension>>

Filename sets are specified by if=<prefix> e=<extension> l=<first image number> h=<last image number>,

Vxto uses many conversion programs from the netpbm or pbmplus conversion package. This package must already be installed on the system.

Currently only single images are supported

-v

The verbose flag prints all the commands that would be issued with a given set of command line parameters but does not execute any of these commands.

if=<fname>

This option will explicitly name the input file or the prefix of a set of files

of=<fname>

This specifies the VisionX output file name. If not specified the root name of the input file will be used with the standard extension for the specified format

-Z

The output file(s) are to be compressed with compress. A .Z extension will be added to the file name.

-gz

The output file are to be compressed with gzip. A .gz extension will be added to the file name.

e=<extension>

set the trailing part of the file-name to extension. This overides the default extension for the specified format.

l=<value>

set the low (first) numeric value of the image sequence.

h=<value>

set the high (first) numeric value of the image sequence. The default is the same value as l=.

f=<size>

this option specifies that the numeric field should have a fixed format of <size> digits.

s=<number>

set the increment between file names, the default is one. This is useful for selecting a subset of the image files for example s=10 will select every tenth image.

The required format specification may be one of the following: The automatically added file extension is the same as the format name.

tiff, tif

convert to a TIFF file

gif

convert to a GIF file

jpeg

convert to a jpeg image

png

convert to a png image

pict

convert to a Macintosh PICT file

rast

convert to a Sun rasterfile

xwd

convert to a X11 or X10 window dump file

xpm

convert to an X11 pixmap

yuv

convert to Abekas YUV format

ps, eps

convert to a PostScript file.

conv=<cmnd>

This option lets you specify a specific conversion program to use. The input of the conversion program should be in pnm, pgm or pbm format.

A. P. Reeves

visx2mpeg(1), vxtopnm(1), vformat(1)