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| author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2012-12-31 09:37:32 +0000 |
|---|---|---|
| committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2012-12-31 09:37:32 +0000 |
| commit | b5b51710bfaf3d5a3fb670ef47f3beacab37db5d (patch) | |
| tree | db61ee0d7f4b6701c8d1bc2cb2fb65d84b2d854f /pamstereogram.html | |
| parent | b46db706e6103bebb15aff96aa24e700a9def5d0 (diff) | |
| download | netpbm-mirror-b5b51710bfaf3d5a3fb670ef47f3beacab37db5d.tar.gz netpbm-mirror-b5b51710bfaf3d5a3fb670ef47f3beacab37db5d.tar.xz netpbm-mirror-b5b51710bfaf3d5a3fb670ef47f3beacab37db5d.zip | |
miscellaneous update
git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@1834 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'pamstereogram.html')
| -rw-r--r-- | pamstereogram.html | 103 |
1 files changed, 68 insertions, 35 deletions
diff --git a/pamstereogram.html b/pamstereogram.html index 610980cc..35f15f4e 100644 --- a/pamstereogram.html +++ b/pamstereogram.html @@ -1,7 +1,7 @@ <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> -<meta http-equiv="Content-type" content="text/html"> +<meta charset="UTF-8"> <title>Pamstereogram User Manual</title> </head> @@ -9,7 +9,7 @@ <h1>pamstereogram</h1> -<p>Updated: 20 June 2012</p> +<p>Updated:30 December 2012</p> <p><a href="#contents">Table Of Contents</a></p> @@ -34,6 +34,8 @@ depth map</p> [<b>-xshift=</b><i>pixels</i>] [<b>-yshift=</b><i>pixels</i>] [<b>-magnifypat=</b><i>scale</i>] +[<b>-guidetop</b>] +[<b>-guidebottom</b>] [<b>-guidesize=</b><i>pixels</i>] [<b>-dpi=</b><i>resolution</i>] [<b>-crosseyed</b>] @@ -135,6 +137,7 @@ dimensions.) The texture image's background color is ignored when blending colors. <p>This option was new in Netpbm 10.53 (December 2010).</p> +</dd> <dt><b>-bgcolor=</b><i>color</i></dt> <dd>Use <i>color</i> as the texture image's background color instead @@ -145,19 +148,23 @@ routine</a>. The <b>-bgcolor</b> option is meaningful only in conjunction with <b>-texfile</b>. <p>This option was new in Netpbm 10.53 (December 2010).</p> +</dd> <dt><b>-smoothing=</b><i>pixels</i></dt> -<dd>Horizontally blur non-background colors into background pixels up -to a distance of <i>pixels</i> pixels (default: 0). This helps smooth -over distracting glitches introduced by the stereogram's color -constraints when producing a mapped-texture stereogram. -The <b>-smoothing</b> option is helpful when the texture image -includes smooth color transitions (as in a photograph) but makes crisp -texture images (as in a line drawing) appear blurry. -The <b>-smoothing</b> option is meaningful only in conjunction with -<b>-texfile</b>. - -<p>This option was new in Netpbm 10.53 (December 2010).</p> +<dd>When used without <b>-texfile</b>, attempt to eliminate artifacts +introduced by edges in the depth map if <i>pixels</i> is greater than zero. + +<p>When used with <b>-texfile</b>, horizontally blur non-background +colors into background pixels up to a distance of <i>pixels</i> pixels. +This helps smooth over distracting glitches introduced +by the stereogram's color constraints when producing a mapped-texture +stereogram. In this case, the <b>-smoothing</b> option is helpful +when the texture image includes smooth color transitions (as in a +photograph) but makes crisp texture images (as in a line drawing) +appear blurry.</p> + +<p>This option was new in Netpbm 10.53 (December 2010). Before +Netpbm 10.61 (December 2012), it has no effect without <b>-texfile</b>.</p> </dd> <dt><b>-xshift=</b><i>pixels</i></dt> @@ -178,28 +185,49 @@ integral scaling factor <i>scale</i>. Note that <em>after</em> pattern shifting (<b>-xshift</b> and <b>-yshift</b>).</dd> -<dt><b>-guidesize=</b><i>pixels</i></dt> -<dd>Draw a pair of <i>pixels</i> by <i>pixels</i> black squares on -a white background underneath the stereogram proper. These squares -help you guide your eyes into proper focus to view the 3-D image. -The trick is to focus your eyes some distance behind the image, -causing you to see four black squares, then continue altering your -focus distance until the middle two black squares fuse into a -single black square. At that point, a crisp, 3-D image will appear. - -<p>If <i>pixels</i> is negative, <b>pamstereogram</b> will draw the -guide squares above the stereogram instead of below it. If -<i>pixels</i> is zero (the default), <b>pamstereogram</b> will draw -no guide squares.</p> +<dt><b>-guidebottom</b> +<dd> +Draw a pair of black squares on a white background underneath the stereogram +proper. These squares help you guide your eyes into proper focus to view the +3-D image. The trick is to focus your eyes some distance behind the image, +causing you to see four black squares, then continue altering your focus +distance until the middle two black squares fuse into a single black +square. At that point, a crisp, 3-D image will appear. + +<p>This option was new in Netpbm 10.61 (December 2012). Before that, +the presence of <b>-guidesize</b>, with a positive value, has the same +effect. </dd> +<dt><b>-guidetop</b> +<dd> +Same as <b>-guidebottom</b>, except the guides go at the top of the image. + +<p>This option was new in Netpbm 10.61 (December 2012). Before that, +the presence of <b>-guidesize</b>, with a negative value, has the same +effect. + +<dt><b>-guidesize=</b><i>pixels</i></dt> + +<dd>The size (width and height) of each guide box. + +<p>This is valid only with <b>-guidetop</b> or <b>-guidebottom</b>. + +<p>Default is 20. + +<p>Before Netpbm 10.61 (December 2012), if you don't specify this option, +<b>pamstereogram</b> draws no guides. If you specify it with a positive +value, <b>pamstereogram</b> behaves as if you specified <b>-guidebottom</b> +too, and if you specify it with a negative value, it behaves as if you +specified <b>-guidetop</b> and specified <b>guidesize</b> with the absolute +value of that negative value. + <dt><b>-dpi=</b><i>resolution</i></dt> <dd>Specify the resolution of the output device in dots per inch. The default is 100 DPI, which represents a fairly crisp screen resolution. <p>Before Netpbm 10.53 (December 2010), the default was 96 DPI.</p> - </dd> <dt><b>-crosseyed</b></dt> @@ -213,10 +241,7 @@ colors are farther from the eye. <p>Before Netpbm 10.53 (December 2010), <b>pamstereogram</b> used higher (lighter) numbers for things closer to the eye <em>without</em> -<b>-crosseyed</b> and vice versa. - -</p> - +<b>-crosseyed</b> and vice versa.</p> </dd> <dt><b>-makemask</b></dt> @@ -260,9 +285,10 @@ parameters (distance between eyes and tradeoff between perceptibility and depth) while <b>-planes</b> is a more computer-centric way (pixel distances in the resulting stereogram). -<p>This option was new in Netpbm 10.59 (June 2012). +<p>This option was new in Netpbm 10.59 (June 2012).</p> +</dd> -<dt><b>-randomseed=</b><i>integer</i> +<dt><b>-randomseed=</b><i>integer</i></dt> <dd>Specify a seed to be used for the random number generator. The default is to use a seed based on the time of day, to one second granularity. @@ -273,9 +299,10 @@ every time you run <b>pamstereogram</b>. <p>This is irrelevant if you use a pattern file (<b>-patfile</b> option), because there is no random element to <b>pamstereogram</b>'s -behavior. +behavior.</p> -<p>This option was new in Netpbm 10.32 (February 2006). +<p>This option was new in Netpbm 10.32 (February 2006).</p> +</dd> </dl> @@ -399,9 +426,14 @@ href="http://dx.doi.org/10.1109/2.318576">10.1109/2.318576</a>.</li> but probably broken beyond usability until Netpbm 10.32 (February 2006) and Netpbm 10.26.23 (January 2006).</p> +<p>A backward incompatible change to the way you request guide boxes +(<b>-guidetop</b>, <b>-guidebottom</b>, <b>-guidesize</b> happened in +Netpbm 10.61 (December 2012). + <h2><a id="author">AUTHOR</a></h2> <p>Copyright (C) 2006, 2010 Scott Pakin, <a href="mailto:scott+pbm@pakin.org">scott+pbm@pakin.org</a>.</p> + <h2><a id="contents">Table Of Contents</a></h2> <ul> <li><a href="#synopsis">SYNOPSIS</a></li> @@ -422,3 +454,4 @@ Netpbm 10.32 (February 2006) and Netpbm 10.26.23 (January 2006).</p> </ul> </body> </html> + |