projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| 8414a40c | 1 | <!-- Creator : groff version 1.18.1 --> |
| 80ed523f | 2 | <!-- CreationDate: Sat Feb 24 18:37:19 2007 --> |
| 8414a40c VZ |
3 | <html> |
| 4 | <head> | |
| 5 | <meta name="generator" content="groff -Thtml, see www.gnu.org"> | |
| 6 | <meta name="Content-Style" content="text/css"> | |
| 7 | <title>RGB2YCBCR</title> | |
| 8 | </head> | |
| 9 | <body> | |
| 10 | ||
| 11 | <h1 align=center>RGB2YCBCR</h1> | |
| 12 | <a href="#NAME">NAME</a><br> | |
| 13 | <a href="#SYNOPSIS">SYNOPSIS</a><br> | |
| 14 | <a href="#DESCRIPTION">DESCRIPTION</a><br> | |
| 15 | <a href="#OPTIONS">OPTIONS</a><br> | |
| 16 | <a href="#SEE ALSO">SEE ALSO</a><br> | |
| 17 | ||
| 18 | <hr> | |
| 19 | <a name="NAME"></a> | |
| 20 | <h2>NAME</h2> | |
| 21 | <!-- INDENTATION --> | |
| 22 | <table width="100%" border=0 rules="none" frame="void" | |
| 23 | cols="2" cellspacing="0" cellpadding="0"> | |
| 24 | <tr valign="top" align="left"> | |
| 25 | <td width="8%"></td> | |
| 26 | <td width="91%"> | |
| 27 | <p>rgb2ycbcr − convert non-YCbCr <small>TIFF</small> | |
| 28 | images to a YCbCr <small>TIFF</small> image</p> | |
| 29 | </td> | |
| 30 | </table> | |
| 31 | <a name="SYNOPSIS"></a> | |
| 32 | <h2>SYNOPSIS</h2> | |
| 33 | <!-- INDENTATION --> | |
| 34 | <table width="100%" border=0 rules="none" frame="void" | |
| 35 | cols="2" cellspacing="0" cellpadding="0"> | |
| 36 | <tr valign="top" align="left"> | |
| 37 | <td width="8%"></td> | |
| 38 | <td width="91%"> | |
| 39 | <p><b>rgb2ycbcr</b> [ <i>options</i> ] <i>src1.tif src2.tif | |
| 40 | ... dst.tif</i></p> | |
| 41 | </td> | |
| 42 | </table> | |
| 43 | <a name="DESCRIPTION"></a> | |
| 44 | <h2>DESCRIPTION</h2> | |
| 45 | <!-- INDENTATION --> | |
| 46 | <table width="100%" border=0 rules="none" frame="void" | |
| 47 | cols="2" cellspacing="0" cellpadding="0"> | |
| 48 | <tr valign="top" align="left"> | |
| 49 | <td width="8%"></td> | |
| 50 | <td width="91%"> | |
| 51 | <p><i>rgb2ycbcr</i> converts <small>RGB</small> color, | |
| 52 | greyscale, or bi-level <small>TIFF</small> images to YCbCr | |
| 53 | images by transforming and sampling pixel data. If multiple | |
| 54 | files are specified on the command line each source file is | |
| 55 | converted to a separate directory in the destination | |
| 56 | file.</p> | |
| 57 | <!-- INDENTATION --> | |
| 58 | <p>By default, chrominance samples are created by sampling 2 | |
| 59 | by 2 blocks of luminance values; this can be changed with | |
| 60 | the <b>−h</b> and <b>−v</b> options. Output data | |
| 61 | are compressed with the <small>PackBits</small> compression | |
| 62 | scheme, by default; an alternate scheme can be selected with | |
| 63 | the <b>−c</b> option. By default, output data are | |
| 64 | compressed in strips with the number of rows in each strip | |
| 65 | selected so that the size of a strip is never more than 8 | |
| 66 | kilobytes; the <b>−r</b> option can be used to | |
| 67 | explicitly set the number of rows per strip.</p> | |
| 68 | </td> | |
| 69 | </table> | |
| 70 | <a name="OPTIONS"></a> | |
| 71 | <h2>OPTIONS</h2> | |
| 72 | <!-- TABS --> | |
| 73 | <table width="100%" border=0 rules="none" frame="void" | |
| 74 | cols="5" cellspacing="0" cellpadding="0"> | |
| 75 | <tr valign="top" align="left"> | |
| 76 | <td width="10%"></td> | |
| 77 | <td width="3%"> | |
| 78 | ||
| 79 | <p><b>−c</b></p> | |
| 80 | </td> | |
| 81 | <td width="5%"></td> | |
| 82 | <td width="80%"> | |
| 83 | ||
| 84 | <p>Specify a compression scheme to use when writing image | |
| 80ed523f | 85 | data: <b>−c none</b> for no compression, <b>−c |
| 8414a40c | 86 | packbits</b> for the PackBits compression algorithm (the |
| 80ed523f VZ |
87 | default), <b>−c jpeg</b> for the JPEG compression |
| 88 | algorithm, <b>−c zip</b> for the deflate compression | |
| 89 | algorithm, and <b>−c lzw</b> for Lempel-Ziv & | |
| 90 | Welch.</p> | |
| 8414a40c VZ |
91 | </td> |
| 92 | <td width="0%"> | |
| 93 | </td> | |
| 94 | <tr valign="top" align="left"> | |
| 95 | <td width="10%"></td> | |
| 96 | <td width="3%"> | |
| 97 | ||
| 98 | <p><b>−h</b></p> | |
| 99 | </td> | |
| 100 | <td width="5%"></td> | |
| 101 | <td width="80%"> | |
| 102 | ||
| 103 | <p>Set the horizontal sampling dimension to one of: 1, 2 | |
| 104 | (default), or 4.</p> | |
| 105 | </td> | |
| 106 | <td width="0%"> | |
| 107 | </td> | |
| 108 | <tr valign="top" align="left"> | |
| 109 | <td width="10%"></td> | |
| 110 | <td width="3%"> | |
| 111 | ||
| 112 | <p><b>−r</b></p> | |
| 113 | </td> | |
| 114 | <td width="5%"></td> | |
| 115 | <td width="80%"> | |
| 116 | ||
| 117 | <p>Write data with a specified number of rows per strip; by | |
| 118 | default the number of rows/strip is selected so that each | |
| 119 | strip is approximately 8 kilobytes.</p> | |
| 120 | </td> | |
| 121 | <td width="0%"> | |
| 122 | </td> | |
| 123 | <tr valign="top" align="left"> | |
| 124 | <td width="10%"></td> | |
| 125 | <td width="3%"> | |
| 126 | ||
| 127 | <p><b>−v</b></p> | |
| 128 | </td> | |
| 129 | <td width="5%"></td> | |
| 130 | <td width="80%"> | |
| 131 | ||
| 132 | <p>Set the vertical sampling dimension to one of: 1, 2 | |
| 133 | (default), or 4.</p> | |
| 134 | </td> | |
| 135 | <td width="0%"> | |
| 136 | </td> | |
| 137 | </table> | |
| 138 | <a name="SEE ALSO"></a> | |
| 139 | <h2>SEE ALSO</h2> | |
| 140 | <!-- INDENTATION --> | |
| 141 | <table width="100%" border=0 rules="none" frame="void" | |
| 142 | cols="2" cellspacing="0" cellpadding="0"> | |
| 143 | <tr valign="top" align="left"> | |
| 144 | <td width="8%"></td> | |
| 145 | <td width="91%"> | |
| 146 | <p><b>tiffinfo</b>(1), <b>tiffcp</b>(1), | |
| 147 | <b>libtiff</b>(3)</p> | |
| 148 | <!-- INDENTATION --> | |
| 149 | <p>Libtiff library home page: | |
| 150 | <b>http://www.remotesensing.org/libtiff</b></p> | |
| 151 | </td> | |
| 152 | </table> | |
| 153 | <hr> | |
| 154 | </body> | |
| 155 | </html> |