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#1 Posted : Wednesday, November 15, 2006 11:56:46 PM(UTC)
sosoprince

Groups: Registered
Posts: 24


I want to know how to set the fill order(266) field in the tiff (jpeg compression) by using Leadtools 14.5 and C#.Net 2003?

I mean to say how to set LeastSignificantBitFirst value when saving tif file

 

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#2 Posted : Thursday, November 16, 2006 2:08:53 PM(UTC)

Amin  
Amin

Groups: Manager, Tech Support
Posts: 356


This tag is controlled automatically by the toolkit when you save TIFF images with LEADTOOLS, and you have the option to use both types of Fill Order with certain types of CCITT-compressed and raw files.
Of course you can change it manually using the RasterCodecs.WriteTag Method, but please note that the TIFF 6 specification states that "FillOrder = 2 should be used only when BitsPerSample = 1". Since JPEG compression does not work with 1 bit/sample images, you should not modify this tag with JPEG-compressed TIFF images.

Amin Dodin

Senior Support Engineer
LEAD Technologies, Inc.
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#3 Posted : Thursday, November 16, 2006 6:17:35 PM(UTC)
sosoprince

Groups: Registered
Posts: 24


1) So how to write a count 1, value 1 to the tag with tag id 266??

2) How to do the fill order setting in the Leadtools toolkits

 
#4 Posted : Sunday, November 19, 2006 8:26:40 AM(UTC)

Amin  
Amin

Groups: Manager, Tech Support
Posts: 356


If you want to set the tag value manually to 1, here's the code to do it:
Leadtools.Codecs.RasterCodecs _codecs = new Leadtools.Codecs.RasterCodecs();
Leadtools.RasterTagMetadata tag = new RasterTagMetadata();
tag.DataType = Leadtools.RasterTagMetadataDataType.UInt16;
tag.Id = 266;
UInt16[] shartValue = new UInt16[1];
shartValue[0] = 1;
tag.FromUInt16(shartValue);
_codecs.WriteTag(@"c:\image.tif", 1, tag);

Amin Dodin

Senior Support Engineer
LEAD Technologies, Inc.
LEAD Logo
 
#5 Posted : Monday, November 27, 2006 3:31:26 AM(UTC)
sosoprince

Groups: Registered
Posts: 24


When i write the fill order tag into the file, the file in a huge bigger size?
 
#6 Posted : Monday, November 27, 2006 4:12:15 AM(UTC)

Amin  
Amin

Groups: Manager, Tech Support
Posts: 356


I think you already posted this question somewhere else. I will search for it and make sure one of our support agents attempts to answer it.

Please do not make double posts in the future because we always try to
address all forum posts. If a post is missed or not answered in a
timely fashion, please re-post in the original thread and we will receive a notification message by the system.

Thank you for your understanding.

Amin Dodin

Senior Support Engineer
LEAD Technologies, Inc.
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