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| author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2012-06-22 02:23:08 +0000 |
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| committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2012-06-22 02:23:08 +0000 |
| commit | 020d088fc0c478797cd3c15a2eb6ecda7969e294 (patch) | |
| tree | d3c1890427980a54a759638dd975fe457cbf2edd /pamstereogram.html | |
| parent | 550d0e8254424ec1bbc6dd4e24bb009489b0e48b (diff) | |
| download | netpbm-mirror-020d088fc0c478797cd3c15a2eb6ecda7969e294.tar.gz netpbm-mirror-020d088fc0c478797cd3c15a2eb6ecda7969e294.tar.xz netpbm-mirror-020d088fc0c478797cd3c15a2eb6ecda7969e294.zip | |
miscellaneous update
git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@1701 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'pamstereogram.html')
| -rw-r--r-- | pamstereogram.html | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/pamstereogram.html b/pamstereogram.html index bf831f16..8d267988 100644 --- a/pamstereogram.html +++ b/pamstereogram.html @@ -1,16 +1,15 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "DTD/xhtml11.dtd"> +<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> - <head> +<meta charset="UTF-8"> <title>Pamstereogram User Manual</title> -<meta http-equiv="Content-Type" content="text/html; charset=us-ascii"/> </head> <body> <h1>pamstereogram</h1> -<p>Updated: 28 September 2010</p> +<p>Updated: 20 June 2012</p> <p><a href="#contents">Table Of Contents</a></p> @@ -41,6 +40,7 @@ depth map</p> [<b>-makemask</b>] [<b>-eyesep=</b><i>inches</i>] [<b>-depth=</b><i>fraction</i>] +[<b>-planes=</b><i>near_pixels</i>,<i>far_pixels</i>] [<b>-randomseed=</b><i>integer</i>] [<i>infile</i>] </p> @@ -242,6 +242,26 @@ to perceive but flatter. Larger numbers make the 3-D image more difficult to perceive but deeper. The default, 0.3333, generally works fairly well.</dd> +<dt><b>-planes=</b><i>near_pixels</i>,<i>far_pixels</i></dt> +<dd>Explicitly specify the distance between repeated pixels in the near plane +and in the far plane. This is an alternative to +<b>-eyesep</b> and <b>-depth</b>. The following equalities hold: + +<ul> + <li><i>eyesep</i> = 2 * <i>far</i></li> + <li><i>depth</i> = 2 * (<i>far</i> − <i>near</i>) / + (2 * <i>far</i> − <i>near</i>)</li> +</ul> + +<p>The number of distinct 3-D depths is <i>far</i> +− <i>near</i> + 1. One might say that <b>-eyesep</b> +and <b>-depth</b> are a more human-friendly way to specify stereoscopic +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). + <dt><b>-randomseed=</b><i>integer</i> <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 |