'\" te
.TH thumbnail 1 "26 Mar 2004" "SunOS 5.11" "User Commands"
.SH "NAME"
thumbnail \- create a TIFF file with thumbnail images
.SH "SYNOPSIS"
.PP
\fBthumbnail\fR [\fB\fIoptions\fR\fR] \fB\fIinput\&.tif\fR\fR \fB\fIoutput\&.tif\fR\fR
.SH "DESCRIPTION"
.PP
The \fBthumbnail\fR command shows how to use the SubIFD tag
(#330) to store thumbnail images\&. \fBthumbnail\fR copies a TIFF Class
F facsimile file to the output file and, for each image, an 8-bit grayscale
thumbnail sketch\&. The output file contains the thumbnail image with the associated
full-resolution page linked below with the SubIFD tag\&.
.PP
By default, thumbnail images are 216 pixels wide by 274 pixels high\&.
Pixels are calculated by sampling and filtering the input image with each
pixel value passed through a contrast curve\&.
.SH "OPTIONS"
.PP
The following options are supported:
.sp
.ne 2
.mk
\fB-\fBc\fR\fR
.in +16n
.rt
Specify a contrast
curve to apply when generating the thumbnail images\&. By default, pixel values
are passed through a linear contrast curve that simply maps the pixel value
ranges\&. Alternative curves are as follows:
.sp
.sp
.ne 2
.mk
\fBexp50\fR
.in +24n
.rt
50% exponential curve
.sp
.sp 2
.in -24n
.sp
.ne 2
.mk
\fBexp60\fR
.in +24n
.rt
60% exponential curve
.sp
.sp 1
.in -24n
.sp
.ne 2
.mk
\fBexp70\fR
.in +24n
.rt
70% exponential curve
.sp
.sp 1
.in -24n
.sp
.ne 2
.mk
\fBexp80\fR
.in +24n
.rt
80% exponential curve
.sp
.sp 1
.in -24n
.sp
.ne 2
.mk
\fBexp90\fR
.in +24n
.rt
90% exponential curve
.sp
.sp 1
.in -24n
.sp
.ne 2
.mk
\fBexp\fR
.in +24n
.rt
pure exponential curve
.sp
.sp 1
.in -24n
.sp
.ne 2
.mk
\fBlinear\fR
.in +24n
.rt
linear curve
.sp
.sp 1
.in -24n
.sp 0
.in -16n
.sp
.ne 2
.mk
\fB-\fBh\fR\fR
.in +16n
.rt
Specify the height
of thumbnail images in pixels\&.
.sp
.sp 1
.in -16n
.sp
.ne 2
.mk
\fB-\fBw\fR\fR
.in +16n
.rt
Specify the width
of thumbnail images in pixels\&.
.sp
.sp 1
.in -16n
.SH "OPERANDS"
.PP
The following operands are supported:
.sp
.ne 2
.mk
\fB\fB\fIinput\&.tif\fR\fR\fR
.in +16n
.rt
The name of the input TIFF file\&.
.sp
.sp 1
.in -16n
.sp
.ne 2
.mk
\fB\fB\fIoutput\&.tif\fR\fR\fR
.in +16n
.rt
The name of the output file\&.
.sp
.sp 1
.in -16n
.SH "ATTRIBUTES"
.PP
See \fBattributes\fR(5)
for descriptions of the following attributes:
.sp
.TS
tab() allbox;
cw(2.750000i)| cw(2.750000i)
lw(2.750000i)| lw(2.750000i).
ATTRIBUTE TYPEATTRIBUTE VALUE
Availabilityimage/library/libtiff
Interface stabilityUncommitted
.TE
.sp
.SH "SEE ALSO"
.PP
\fBtiffdump\fR(1), \fBtiffgt\fR(1), \fBtiffinfo\fR(1), \fBlibtiff\fR(3)
.SH "NOTES"
.PP
There are no options to control the format of the saved thumbnail
images\&.
.PP
Updated by Breda McColgan, Sun Microsystems Inc\&., 2004\&.
...\" created by instant / solbook-to-man, Thu 20 Mar 2014, 02:30
...\" LSARC 2003/085 libtiff, libjpeg, and libpng