projects / wxWidgets.git / blame
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|---|---|---|
| 8414a40c VZ |
1 | .\" $Id: thumbnail.1,v 1.2 2005/11/02 11:07:19 dron Exp $ |
| 2 | .\" | |
| 3 | .\" Copyright (c) 1994-1997 Sam Leffler | |
| 4 | .\" Copyright (c) 1994-1997 Silicon Graphics, Inc. | |
| 5 | .\" | |
| 6 | .\" Permission to use, copy, modify, distribute, and sell this software and | |
| 7 | .\" its documentation for any purpose is hereby granted without fee, provided | |
| 8 | .\" that (i) the above copyright notices and this permission notice appear in | |
| 9 | .\" all copies of the software and related documentation, and (ii) the names of | |
| 10 | .\" Sam Leffler and Silicon Graphics may not be used in any advertising or | |
| 11 | .\" publicity relating to the software without the specific, prior written | |
| 12 | .\" permission of Sam Leffler and Silicon Graphics. | |
| 13 | .\" | |
| 14 | .\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, | |
| 15 | .\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY | |
| 16 | .\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. | |
| 17 | .\" | |
| 18 | .\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR | |
| 19 | .\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, | |
| 20 | .\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
| 21 | .\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF | |
| 22 | .\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
| 23 | .\" OF THIS SOFTWARE. | |
| 24 | .\" | |
| 25 | .if n .po 0 | |
| 26 | .TH THUMBNAIL 1 "November 2, 2005" "libtiff" | |
| 27 | .SH NAME | |
| 28 | thumbnail \- create a | |
| 29 | .SM TIFF | |
| 30 | file with thumbnail images | |
| 31 | .SH SYNOPSIS | |
| 32 | .B thumbnail | |
| 33 | [ | |
| 34 | .I options | |
| 35 | ] | |
| 36 | .I input.tif | |
| 37 | .I output.tif | |
| 38 | .SH DESCRIPTION | |
| 39 | .I thumbnail | |
| 40 | is a program written to show how one might use the | |
| 41 | SubIFD tag (#330) to store thumbnail images. | |
| 42 | .I thumbnail | |
| 43 | copies a | |
| 44 | .SM TIFF | |
| 45 | Class F facsimile file to the output file | |
| 46 | and for each image an 8-bit greyscale | |
| 47 | .IR "thumbnail sketch" . | |
| 48 | The output file contains the thumbnail image with the associated | |
| 49 | full-resolution page linked below with the SubIFD tag. | |
| 50 | .PP | |
| 51 | By default, thumbnail images are 216 pixels wide by 274 pixels high. | |
| 52 | Pixels are calculated by sampling and filtering the input image | |
| 53 | with each pixel value passed through a contrast curve. | |
| 54 | .SH OPTIONS | |
| 55 | .TP | |
| 56 | .B \-w | |
| 57 | Specify the width of thumbnail images in pixels. | |
| 58 | .TP | |
| 59 | .B \-h | |
| 60 | Specify the height of thumbnail images in pixels. | |
| 61 | .TP | |
| 62 | .B \-c | |
| 63 | Specify a contrast curve to apply in generating the thumbnail images. | |
| 64 | By default pixels values are passed through a linear contrast curve | |
| 65 | that simply maps the pixel value ranges. | |
| 66 | Alternative curves are: | |
| 67 | .B exp50 | |
| 68 | for a 50% exponential curve, | |
| 69 | .B exp60 | |
| 70 | for a 60% exponential curve, | |
| 71 | .B exp70 | |
| 72 | for a 70% exponential curve, | |
| 73 | .B exp80 | |
| 74 | for a 80% exponential curve, | |
| 75 | .B exp90 | |
| 76 | for a 90% exponential curve, | |
| 77 | .B exp | |
| 78 | for a pure exponential curve, | |
| 79 | .B linear | |
| 80 | for a linear curve. | |
| 81 | .SH BUGS | |
| 82 | There are no options to control the format of the saved thumbnail images. | |
| 83 | .SH "SEE ALSO" | |
| 84 | .BR tiffdump (1), | |
| 85 | .BR tiffgt (1), | |
| 86 | .BR tiffinfo (1), | |
| 87 | .BR libtiff (3) | |
| 88 | .PP | |
| 89 | Libtiff library home page: | |
| 90 | .BR http://www.remotesensing.org/libtiff/ |