晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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<TITLE>
Changes in TIFF v3.6.1
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<BODY BGCOLOR=white>
<FONT FACE="Helvetica, Arial, Sans">
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<BASEFONT SIZE=4>
<B><FONT SIZE=+3>T</FONT>IFF <FONT SIZE=+2>C</FONT>HANGE <FONT SIZE=+2>I</FONT>NFORMATION</B>
<BASEFONT SIZE=3>

<UL>
<HR SIZE=4 WIDTH=65% ALIGN=left>
<B>Current Version</B>: v3.6.1<BR>
<B>Previous Version</B>: <A HREF=v3.6.0.html>v3.6.0</a><BR>
<B>Master FTP Site</B>: <A HREF="ftp://download.osgeo.org/libtiff">
download.osgeo.org</a>, directory pub/libtiff</A><BR>
<B>Master HTTP Site</B>: <A HREF="http://www.simplesystems.org/libtiff/">
http://www.simplesystems.org/libtiff/</a> 
<HR SIZE=4 WIDTH=65% ALIGN=left>
</UL>

<P>
This document describes the changes made to the software between the
<I>previous</I> and <I>current</I> versions (see above).
If you don't find something listed here, then it was not done in this
timeframe, or it was not considered important enough to be mentioned.
The following information is located here:
<UL>
<LI><A HREF="#hightlights">Major Changes</A>
<LI><A HREF="#configure">Changes in the software configuration</A>
<LI><A HREF="#libtiff">Changes in libtiff</A>
<LI><A HREF="#tools">Changes in the tools</A>
<LI><A HREF="#contrib">Changes in the contrib area</A>
<LI><A HREF="#lzwkit">Changes in the LZW compression kit</A>
</UL>
<p> 
<P><HR WIDTH=65% ALIGN=left>

<!--------------------------------------------------------------------------->

<A NAME="highlights"><B><FONT SIZE=+3>M</FONT>AJOR CHANGES:</B></A>

<ul>
	<li> New utility <a href="./man/tiff2pdf.1.html">tiff2pdf</a>
	for converting TIFF images directly into PDF.
	<li> New <a href="./man/TIFFcolor.3t.html">color conversion module</a>.
	<li> Full support for Orientation tag in
	<a href="./man/TIFFReadRGBAImage.3t.html">TIFFRGBAImage</a> interface.
	<li> Many bugs fixed.
</ul>


<P><HR WIDTH=65% ALIGN=left>
<!--------------------------------------------------------------------------->

<A NAME="configure"><B><FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:</B></A>

<UL>

<li> libtiff/makefile.vc, tools/makefile.vc: Support for IJG JPEG library.

<li> Makefile.in: Add an absolute path to the test_pics.sh call.

<li> Makefile.in: Add an absolute path to the test_pics.sh call.

<li> libtiff/tiffcomp.h: #define _BSDTYPES_DEFINED when defining BSD typedefs.

<li> configure, libtiff/{Makefile.in, mkversion.c}: Relative buildings fixed.

<li> Makefile.in: Add an absolute path to the test_pics.sh call.

</UL>

<P><HR WIDTH=65% ALIGN=left>

<!--------------------------------------------------------------------------->

<A NAME="libtiff"><B><FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:</B></A>

<UL>

<li> libtiff/{tif_color.c, tif_getimage.c, tiffio.h}: Added support
for ReferenceBlackWhite tag handling when converted from YCbCr color space as
per bug 120.

<li> libtiff/{tif_getimage.c, tif_aux.c}: Read WhitePoint tag from the
file and properly use it for CIE Lab 1976 to RGB transform.

<li> libtiff/{tif_getimage.c, tiffio.h}: Finally resolved problems with
orientation handling. TIFFRGBAImage interface now properly supports all
possible orientations, i.e. images will be flipped both in horizontal and
vertical directions if required. 'Known bugs' section now removed from the
appropriate manual pages.

<li> libtiff/tif_luv.c: Fixed bug in 48-bit to 24-bit conversion routine,
reported by Antonio Scuri.

<li> libtiff/{tiffio.h, tif_codec.c}: Added new function
TIFFIsCODECConfigured(), suggested by Ross Finlayson.

<li> libtiff/tif_ojpeg.c: TIFFVGetField() function now can properly extract
the fields from the OJPEG files. Patch supplied by Ross	Finlayson.

<li> libtiff/tif_dir.h: _TIFFFindOrRegisterdInfo declaration replaced
with _TIFFFindOrRegisterFieldInfo as reported by Ross Finlayson.

<li> libtiff/tif_dirinfo.c: Implemented binary search in _TIFFMergeFieldInfo().
Patch supplied by Ross Finlayson.

<li> tif_dirread.c: do not mark all anonymously defined tags to be IGNOREd (as
it was done in 3.6.0).

<li> libtiff/{tiff.h, tif_dirinfo.c}: Added support for IFD (13) datatype,
intruduced in "Adobe PageMaker TIFF Technical Notes".

<li> libtiff/{tif_color.c, tif_getimage.c, tiffio.h}: New color space
conversion code: CIE L*a*b* 1976 images now supported by the TIFFRGBAImage
interface. YCbCr to RGB conversion code also moved there and now has
<a href="./man/TIFFcolor.3t.html">publicly available interface</a>. These
routines currently used in TIFFRGBAImage interface only and not supported in
other libtiff tools yet. So if you want, for example, to convert CIE Lab image
into PostScript file you should do it in two steps: chnge colorspace to RGB
using <a href="./man/tiff2rgba.1.html">tiff2rgba</a> utility abd then process
it with the <a href="./man/tiff2ps.1.html">tiff2ps</a>.

<li> libtiff/tif_tile.c: Remove spurious use of "s" (sample) in the
planarconfig_contig case in TIFFComputeTile() as per bug 387

<li> libtiff/tiffiop.h: New macros: TIFFmax and TIFFmin.

<li> libtiff/{tiffio.h, tif_strip.c}: Added TIFFRawStripSize() function
as suggested by Chris Hanson.

<li> libtiff/{tif_lzw.c, tif_fax3.c}: Proper support for update mode
as per bug 424.

</UL>

<P><HR WIDTH=65% ALIGN=left>

<!-------------------------------------------------------------------------->
	
<A NAME="tools"><B><FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:</B></A>

<UL>

<li> <a href=./man/tiff2pdf.1.html>tiff2pdf</a>: New tool, written by
Ross Finlayson, to directly convert TIFF files to PDF.

<li> <a href=./man/tiffgt.1.html>tiffgt</a>: Unmaintained and platform
dependent sgigt utility removed and replaced with the completely rewritten
portable <a href=./man/tiffgt.1.html>tiffgt</a> tool (depend on OpenGL and
GLUT). This tool will not build by default.

<li> <a href=./man/ras2tiff.1.html>ras2tiff</a>: Properly determine
SUN Rasterfiles with the reverse byte order (it is reported by the magic
header field). Problem reported by Andreas Wiesmann.

<li> <a href=./man/raw2tiff.1.html>raw2tiff</a>: Implemented image size
guessing using correlation coefficient calculation between two neighbour
lines.

</UL>

<P><HR WIDTH=65% ALIGN=left>

<!--------------------------------------------------------------------------->

<A NAME="contrib"><B><FONT SIZE=+3>C</FONT>HANGES IN THE CONTRIB AREA:</B></A>
<UL> 

<li> contrib/pds/{tif_pdsdirread.c, tif_pdsdirwrite.c}: Use TIFFDataWidth()
function insted of tiffDataWidth array.

</UL>

<!--------------------------------------------------------------------------->

<A NAME="lzwkit"><B><FONT SIZE=+3>C</FONT>HANGES IN THE LZW COMPRESSION
KIT:</B></A>
<UL> 

<li> Proper support for update mode as per bug 424.

</UL>

<A HREF="index.html"><IMG SRC="images/back.gif"></A> TIFF home page.<BR>

<HR>

Last updated $Date: 2016-09-25 20:05:45 $.

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