Search found 27 matches

by sven
2012-05-21T08:33:38-07:00
Forum: Bugs
Topic: Comparing the same files results in differences
Replies: 7
Views: 12990

Re: Comparing the same files results in differences

This is the Ghostscript command used by ImageMagick: "gs" -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r150x150" "-sOutputFile=/tmp/magick-IW9e6gXg-%08d" "-f/tmp/magick-eHVqVwOS" "-...
by sven
2012-04-10T01:54:41-07:00
Forum: Bugs
Topic: Comparing the same files results in differences
Replies: 7
Views: 12990

Re: Comparing the same files results in differences

Anthony,

Thanks for your reply.
However, to be honest, I have no idea how to do so. Would you be so kind and assist me in this case?
by sven
2012-04-05T06:55:47-07:00
Forum: Bugs
Topic: Comparing the same files results in differences
Replies: 7
Views: 12990

Re: Comparing the same files results in differences

So is this a bug in ImageMagick, since the results using GhostScript directly are correct?
by sven
2012-04-03T02:03:16-07:00
Forum: Bugs
Topic: Comparing the same files results in differences
Replies: 7
Views: 12990

Re: Comparing the same files results in differences

Anthony, Thanks for your reply. Obviously, there's no issue when running GhostScript directly. Here's what I've tried: gs -dBATCH -dNOPAUSE -sDEVICE=tiff48nc -r300x300 -sOutputFile=gs_file1.tif logo.pdf gs -dBATCH -dNOPAUSE -sDEVICE=tiff48nc -r300x300 -sOutputFile=gs_file2.tif logo.pdf compare -dens...
by sven
2012-04-02T12:26:49-07:00
Forum: Bugs
Topic: Comparing the same files results in differences
Replies: 7
Views: 12990

Comparing the same files results in differences

Problem When comparing an image with itself the result using the option -metric AE is expected to be 0 . However, the result in case of the file below is (most frequently a value around) 487 . File Download file Commands convert -density 300 testfile.pdf testfile_1.tif convert -density 300 testfile...
by sven
2011-09-26T08:01:58-07:00
Forum: Bugs
Topic: Issue with applying clipping paths
Replies: 4
Views: 9512

Re: Issue with applying clipping paths

Anthony, Thanks a lot for your explanations. Unfortunately, it does not seem to be current practice to actually consider the direction of paths when drawing. At least, for Adobe Photoshop it does not seem to matter at all. You can draw a path starting anywhere and tell whether this path is to be sub...
by sven
2011-09-22T08:33:00-07:00
Forum: Bugs
Topic: Issue with applying clipping paths
Replies: 4
Views: 9512

Issue with applying clipping paths

First of all, I used the following two versions of ImageMagick to verify the problem described below. Versions ImageMagick 6.7.2-6 2011-09-16 Q16 ImageMagick 6.5.4-7 2010-12-13 Q16 OpenMP Moreover, here are the results of calling convert -list format for each of the two versions: ImageMagick 6.5.4-7...
by sven
2008-02-05T10:12:27-07:00
Forum: Users
Topic: Change background by applying clipping path
Replies: 7
Views: 15736

Change background by applying clipping path

Hi magick, I would like to change the background of an image by applying its clipping path. That is to say that the current image has a white background and a clipping path which describes a part of this image. The resulting image should be the same image containing the image part with the clipping ...
by sven
2008-01-31T02:23:17-07:00
Forum: Developers
Topic: Difference threshold value
Replies: 7
Views: 16377

Re: Difference threshold value

Hi Anthony,

Thank you very much for your reply!
I will try your solution. However, I wonder whether this is considerably slower than the current solution...

Kind regards,
Sven
by sven
2008-01-30T03:08:29-07:00
Forum: Developers
Topic: Difference threshold value
Replies: 7
Views: 16377

Re: Difference threshold value

Actually it is overlays with red not magenta. As as of some more recent version of IM the overlay tint percentage was change from 90% to 70%. I am not sure when that change however happened as I did not log it at the time (my bad). Hi Anthony, would it be possible to keep this value variable, since...
by sven
2007-11-27T03:22:42-07:00
Forum: Developers
Topic: Difference threshold value
Replies: 7
Views: 16377

Re: Difference threshold value

Hello anthony, Thanks for your reply! Actually it is overlays with red not magenta. As as of some more recent version of IM the overlay tint percentage was change from 90% to 70%. I am not sure when that change however happened as I did not log it at the time (my bad). Oh, I haven't noticed that cha...
by sven
2007-11-19T09:20:09-07:00
Forum: Developers
Topic: Difference threshold value
Replies: 7
Views: 16377

Difference threshold value

Hi magick, I'd like to make a suggestion concerning the compare utility. Currently, the comparison of two images works as follows: If all color channels of pixel (x,y) of image A are equal to all color channels of pixel (x,y) of image B, this pixel is overlayed with 90 % white. If only one color cha...
by sven
2007-10-04T02:41:50-07:00
Forum: Developers
Topic: Compare with threshold value?
Replies: 1
Views: 7792

Compare with threshold value?

Hi magick, We're using the compare utility intensively and it works flawlessly. If a certain pixel in image A is different from the corresponding pixel in image B, the resulting pixel in image C will be overlayed with 90% magenta. Now, we're wondering, if it is possible to consider a certain thresho...
by sven
2007-07-24T05:45:12-07:00
Forum: Users
Topic: Option -metric outputs to STDERR
Replies: 3
Views: 9467

Option -metric outputs to STDERR

Hi magick, the documentation says (http://www.imagemagick.org/script/command-line-options.php#metric) that the option -metric AE outputs to STDERR. I wonder, why it does not output to STDOUT. Well, of course it's the error count of the number of different pixels, but it makes it difficult to only re...
by sven
2007-06-13T09:03:23-07:00
Forum: Users
Topic: Hardware recommandation?
Replies: 2
Views: 7406

Re: Hardware recommandation?

Thank you very much for your answer!

Kind regards
Sven