Legacy ImageMagick Discussions Archive

Thanks all who looked into this problem,

i found out it. It is currect only:

it is the scaled quantization table using the equation QT*scale where scale is 200-2*92(92 is default scaling factor)

The following python code also gave same result: from PIL import Image tst6=Image.open('testing6.jpeg') print "testing6 QT table" print tst6.quantization its output is also: testing6 QT table {0: array('b', [3, 2, 2, 2, 2, 2, 3, 2, 2, 3, 4, 3, 3, 3, 4, 5, 4, 3, 3, 4, 5, 7, 5, 4, 4, 4, 5, 7, 12, 7, 6 ...

The exiftool command i used is: exiftool -v3 testing6.jpeg its output is : ExifToolVersion = 8.60 FileName = testing6.jpeg Directory = . FileSize = 70424 FileModifyDate = 1381817254 FilePermissions = 33204 FileType = JPEG MIMEType = image/jpeg . . JPEG DQT (65 bytes): 0018: 00 03 02 02 02 02 02 03 ...

doubt in convert -define:jpeg q-table=myQTable.xml (ver 6.8.7-0) First i executed the following command: convert -define jpeg:q-table=myQTables.xml lena512.bmp testing6.jpeg after executing i displayed the qtable using exiftool and using python both shows which is not the one i gave in the myQTables ...

Thank you, i shall try the new version

pls help.

savyan-K54C% convert Version: ImageMagick 6.6.9-7 2012-08-17 Q16 http://www.imagemagick.org Copyright: Copyright (C) 1999-2011 ImageMagick Studio LLC Features: OpenMP is the convert version i installed. But in my system there is no difference , what may be the reason savyan-K54C% convert -define ...

savyan-K54C% convert -define jpeg:q-table=myQTables.xml baboon.bmp a1.jpeg savyan-K54C% ls -l a1.jpeg -rw-rw-r-- 1 savyan savyan 139541 Oct 9 23:16 a1.jpeg savyan-K54C% convert baboon.bmp a1.jpeg savyan-K54C% ls -l a1.jpeg -rw-rw-r-- 1 savyan savyan 139541 Oct 9 23:16 a1.jpeg savyan-K54C% this is my ...

convert -define jpeg:q-table=myQTables.xml test.bmp a1.jpeg is not working for me. pls help where myQTables.xml is stored in the same directory and its content is: <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE quantization-tables [ <!ELEMENT quantization-tables (table)+> <!ELEMENT table ...