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[libpng14] Fix links in man page
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@ -62,7 +62,7 @@ The PNG-1.0 specification is available as RFC 2083
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W3C Recommendation <http://www.w3.org/TR/REC-png-961001>.
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Some additional chunks are described in the special-purpose public chunks
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documents at <http://www.libpng.org/pub/png/documents/>.
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documents at <http://www.libpng.org/pub/png/spec/register/>
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Other information
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about PNG, and the latest version of libpng, can be found at the PNG home
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@ -84,7 +84,7 @@ majority of the needs of its users.
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Libpng uses zlib for its compression and decompression of PNG files.
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Further information about zlib, and the latest version of zlib, can
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be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
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be found at the zlib home page, <http://zlib.net/>.
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The zlib compression utility is a general purpose utility that is
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useful for more than PNG files, and can be used without libpng.
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See the documentation delivered with zlib for more details.
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@ -1068,9 +1068,11 @@ the normalized graylevel is computed:
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int bw = 65536 - (rw + gw);
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gray = (rw*red + gw*green + bw*blue)/65536;
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The default values approximate those recommended in the Charles
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Poynton's Color FAQ, <http://www.inforamp.net/~poynton/>
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Copyright (c) 1998-01-04 Charles Poynton <poynton at inforamp.net>
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The defaults correspond to the ITU-R recommendation 709, and also the sRGB
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color space, as recommended in the Charles Poynton's Colour FAQ,
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Copyright (c) 2006-11-28 Charles Poynton, in section 9:
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<http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html#RTFToC9>
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Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
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12
libpng.3
12
libpng.3
@ -504,7 +504,7 @@ The PNG-1.0 specification is available as RFC 2083
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W3C Recommendation <http://www.w3.org/TR/REC-png-961001>.
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Some additional chunks are described in the special-purpose public chunks
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documents at <http://www.libpng.org/pub/png/documents/>.
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documents at <http://www.libpng.org/pub/png/spec/register/>
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Other information
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about PNG, and the latest version of libpng, can be found at the PNG home
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@ -526,7 +526,7 @@ majority of the needs of its users.
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Libpng uses zlib for its compression and decompression of PNG files.
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Further information about zlib, and the latest version of zlib, can
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be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
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be found at the zlib home page, <http://zlib.net/>.
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The zlib compression utility is a general purpose utility that is
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useful for more than PNG files, and can be used without libpng.
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See the documentation delivered with zlib for more details.
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@ -1510,9 +1510,11 @@ the normalized graylevel is computed:
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int bw = 65536 - (rw + gw);
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gray = (rw*red + gw*green + bw*blue)/65536;
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The default values approximate those recommended in the Charles
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Poynton's Color FAQ, <http://www.inforamp.net/~poynton/>
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Copyright (c) 1998-01-04 Charles Poynton <poynton at inforamp.net>
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The defaults correspond to the ITU-R recommendation 709, and also the sRGB
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color space, as recommended in the Charles Poynton's Colour FAQ,
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Copyright (c) 2006-11-28 Charles Poynton, in section 9:
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<http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html#RTFToC9>
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Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
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