Legacy ImageMagick Discussions Archive

How can i Know the libtiff version ?
If i did not use the -quality 50 in my conversion still the issue exists. I am able to see the size diferences

Hi ,

previously i am working on 6.8.7-9 .Using the following command to convert a file

convert.exe test.tif -density 300x300 -quality 50 -compress Group4 -resize 2541x3300! test_out.tif
for a sample i got the file size as 63KB

with the same file and same command with the IM version 6.9.0-0 ...

Exactly performance drop was found After 6.8.7-8 Means the drop starts from 6.8.7-9
We have gone through the logs and found out that the performance problem may caused by the following modification with rev. 13858+13859 in MagickCore/attribute.c

The modification causes these overhead steps if a b/w ...

I Can still narrow down the issue .
Exactly performance drop was found After 6.8.7-8 Means the drop starts from 6.8.7-9
We have gone through the logs and found out that the performance problem may caused by the following modification with rev. 13858+13859 in MagickCore/attribute.c

The modification ...

More specifically i have tested with most of the versions available in between 6.8.2 and 6.8.7-9.
In Exact i found the performance drop after 6.8.6-10 .
I have gone through the change log but nothing helped to solve my issue .
Are there any one has any idea what changes after the version 6.8.6-10 ...

Are we getting this errors only in version 6.8.7-9 ?is this resolved in v6.9.0-0?

are there any specific reasons to had this performance drop from version 6.8.2-4 to 6.8.7-9?

I am using the dll's of IM 6.8.7-9 not form the command line

Is there any possibility to resolve these kind of errors?

Hi
I am using the IM's API to re-size the image.The image re-sized but got the following exception.

"Error in module TIFFFillStrip; C:\fromcode.tif.InputSinglePage.tif: Data buffer too small to hold strip 0"

My code is written to handle exception by returning an error .So i am getting the return ...

I am working on Wondows 7 there are no threads for both versions .
The result of first version is
>convert.exe -version
Version: ImageMagick 6.8.2-4 2013-02-03 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2013 ImageMagick Studio LLC
Features: DPC OpenMP
Delegates: bzlib freetype jng ...

last post images are not shown as expected so added the links

https://www.dropbox.com/s/8lgtlv159zotp ... l.JPG?dl=0
https://www.dropbox.com/s/37m4gbccybhjn ... r.JPG?dl=0

Hi thanks for the reply ,
here are the deraills mentioned .

Image image;
image.read( "case.jpg" );
image.magick("TIFF");
image.compressType(Group4Compression);
image.type(BilevelType);
image.write("case_1.tiff");

For some images even i use resampling ,and resize options available .

for version ...

Both are Q16 builds there is no difference

Hi ,
I observed a huge performance drop when i started upgrading from 6.8.2-4.
6.8.2-4 --- 1440 pages/hour
6.8.7-9 ---- 564 pages/hour
Almost seen a drop above 50 %
Even i tried with the latest version 6.9.0.0, still its behaving the same , there is no improvements .
Can i know why the performance ...