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Message-ID: <496E31A690F7D311B93C0008C789494C06ACDB72@zei02exm01.cork.cig.mot.com>
From: Carter John-jcarte01 <John.A.Carter@motorola.com>
To: tiff@olympiakos.com
Subject: planar to chunky
Date: Mon, 14 Apr 2003 12:30:22 +0100
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Hi
 
I though I'd get my facts straight before i tried implementing this conversion process.
I've got a tiff in planar format ie planar_configuration = 2. I've a question.
1)a Is all the data for a pixel in the one strip
    eg in a strip 12 bytes long is the rgb data for the 1st pixel at locations 0,4,8 (assuming 24bit image)
    OR
   b is the image divide in 3 strips and the 1st strip is devoted to Red.
    ie the rgb data for the 1st pixel is in 1st location of each strip ?
2) assuming the 1a is true, would the bytes for the 1st pixel in a 48bit image be in strip locations
    01,45,89 ?
 
3) if the image is also horizontal differencing ie predictor = 2 
    should the differencing be done after the strip has be chunkified :-)
 
thanks jc 

____________________________ 

John Carter
BSS O&M Development group,
Motorola,
Mahon Industrial Estate,
Cork. 
Tel:         +353 21 4807 637 (direct)
Fax:         +353 21 4357635  ( reception )
Mobile:  +353 86 3947920
Email <mailto:john.a.carter@motorola.com>   www <http://www.cork.cig.mot.com/~jcarte01/> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Homer: There's 3 ways to do things, the right way, the wrong  way, and the max power way.
Bart: isn't that  the wrong way.
Homer: yea but faster.

 

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<META content="MSHTML 5.50.4134.600" name=GENERATOR></HEAD>
<BODY>
<DIV><FONT face=Arial size=2><SPAN 
class=254491111-14042003>Hi</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN 
class=254491111-14042003></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003>I though I'd get my 
facts straight before i tried implementing this conversion 
process.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003>I've got a tiff in 
planar format ie planar_configuration = 2. I've a question.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003>1)a Is all the data 
for a pixel in the one strip</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN 
class=254491111-14042003>&nbsp;&nbsp;&nbsp;&nbsp;eg in a&nbsp;strip 12 bytes 
long is the rgb data for the 1st pixel at locations 0,4,8 (assuming 24bit 
image)</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN 
class=254491111-14042003>&nbsp;&nbsp;&nbsp;&nbsp;OR</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003>&nbsp;&nbsp;&nbsp;b 
is the image divide in 3&nbsp;strips and the 1st strip is devoted to 
Red.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003></SPAN></FONT><FONT 
face=Arial size=2><SPAN class=254491111-14042003>&nbsp;&nbsp;&nbsp;&nbsp;ie the 
rgb data for the 1st pixel is in 1st location of each strip 
?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003>2) assuming the 1a 
is true, would&nbsp;the&nbsp;bytes for the 1st pixel in a 48bit image&nbsp;be in 
strip locations</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN 
class=254491111-14042003>&nbsp;&nbsp;&nbsp;&nbsp;01,45,89 ?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN 
class=254491111-14042003></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003>3) if the image is 
also horizontal differencing ie predictor = 2 </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003>&nbsp;&nbsp;&nbsp; 
should the differencing be done after the strip has be chunkified 
:-)</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN 
class=254491111-14042003></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2><SPAN class=254491111-14042003>thanks 
jc&nbsp;</SPAN></FONT></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN 
style="FONT-SIZE: 10pt; COLOR: gray">____________________________ </SPAN></P>
<P><SPAN style="FONT-SIZE: 10pt; COLOR: gray">John Carter<BR>BSS O&amp;M 
Development group,<BR>Motorola,<BR>Mahon Industrial Estate,<BR>Cork. 
<BR>Tel:<SPAN 
style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
</SPAN>+353 21 4807 <STRONG>637</STRONG> (direct)<BR>Fax:<SPAN 
style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
</SPAN>+353 21 4357635&nbsp; (&nbsp;reception )<BR>Mobile:<SPAN 
style="mso-tab-count: 1">&nbsp; </SPAN>+353 86 3947920<BR><A 
href="mailto:john.a.carter@motorola.com">Email</A></SPAN><SPAN 
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">&nbsp;</SPAN><A 
href="http://www.cork.cig.mot.com/~jcarte01/">www</A><SPAN 
style="FONT-SIZE: 8pt; mso-bidi-font-size: 12.0pt"><?xml:namespace prefix = o ns 
= "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P><SPAN style="FONT-SIZE: 8pt; COLOR: gray; mso-bidi-font-size: 10.0pt">Homer: 
There&#8217;s 3 ways to do things, the right way, the wrong <SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>way, and the max power way.<BR><I>Bart: 
isn&#8217;t that <SPAN style="mso-spacerun: yes">&nbsp;</SPAN>the wrong 
way.</I><BR>Homer: yea but faster.</SPAN><SPAN 
style="FONT-SIZE: 8pt; mso-bidi-font-size: 12.0pt"><o:p></o:p></SPAN></P></DIV>
<DIV>&nbsp;</DIV></BODY></HTML>

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