Search found 295 matches

by whugemann
2013-11-13T08:37:10-07:00
Forum: Users
Topic: Converting native PDF to image
Replies: 2
Views: 2412

Re: Converting native PDF to image

Are you sure that the signature is a raster image in the original document? It could also be a vector format, say a glyph in a dedicated font file containing the signatures of all employees. This would cause detoriation when being converted to a raster image.
by whugemann
2013-11-12T03:31:55-07:00
Forum: Bugs
Topic: Version info should include 64 or 32 bit build
Replies: 3
Views: 3939

Re: Version info should include 64 or 32 bit build

We added this recently, this is the result from my command line with the latest beta: [/quote] I guess "recently" has to be taken very literally: Only the latest official build 6.8.7-5 behaves this way ;-) Anyway, I appreciate that you changed that, now making the remote error analysis somewhat eas...
by whugemann
2013-11-07T03:22:13-07:00
Forum: Bugs
Topic: Version info should include 64 or 32 bit build
Replies: 3
Views: 3939

Version info should include 64 or 32 bit build

I have been using IM under Windows since XP, both on 32 and 64 bit computers. My Windows scripts (batch or VBS) are used by about 30 different users, working in different places. The command line option -version does not provide really much information and -verbose does not seem to change this. Espe...
by whugemann
2013-06-05T04:00:03-07:00
Forum: Bugs
Topic: ImageMagic crash on windows 7
Replies: 6
Views: 6664

Re: ImageMagic crash on windows 7

I think this issue was already treated in http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=22956. Basically, Windows will automatically run the application associated with the file format specified. If you are working on image manipulation, IrfanView will probably be installed on your...
by whugemann
2013-05-05T10:54:26-07:00
Forum: Users
Topic: how to make an avi from a series of images
Replies: 4
Views: 14670

Re: how to make an avi from a series of images

If you want to create an AVI, I assume that you are working under Windows. In this case, the duo AVIsynth/VirtualDub is probably the easiest solution, see http://www.imagemagick.org/Usage/windows/#auxiliary. In AVIsynth there is a special function called ImageSource that does this job most easily. T...
by whugemann
2013-04-08T10:47:48-07:00
Forum: Users
Topic: scanned paper pdfs and original image extraction.
Replies: 10
Views: 10825

Re: scanned paper pdfs and original image extraction.

There is special software that extracts the single pages from a PDF scan. Under Windows, this would be xpdf, more specificly pdfimages, which extracts the single pages from your document as .ppm files. The DOS command would be: pdfimages your.pdf trunc and would spit out trunc-001.pbm trunc-002.pbm ...
by whugemann
2013-04-08T01:47:11-07:00
Forum: Users
Topic: Contrast stretch for an arbitrary quadrangle
Replies: 13
Views: 12821

Re: Contrast stretch for an arbitrary quadrangle

I have just tried a solution based on -region. This basically works, as -region obvisously is what you call a "read mask", i.e. the histogramm corrections are based on the region selected. So I can "select" the darker region of the image, make the desired corrections and then come back to the outer ...
by whugemann
2013-03-28T11:52:49-07:00
Forum: Users
Topic: Contrast stretch for an arbitrary quadrangle
Replies: 13
Views: 12821

Re: Contrast stretch for an arbitrary quadrangle

... because "-contrast-stretch" uses all the image pixels to calculate how to stretch. See the pages Anthony has linked to. The mask only limits which pixels are stretched. Hmm. This is not how I would expect a mask or selection to function :-( If you use a selection or mask in Photoshop or Gimp, a...
by whugemann
2013-03-28T00:40:16-07:00
Forum: Users
Topic: Contrast stretch for an arbitrary quadrangle
Replies: 13
Views: 12821

Re: Contrast stretch for an arbitrary quadrangle

You can extract the points from your xml file. Then create a white mask by using -draw on a same size, say black background, to create a white filled polygon. Then that mask can be used for the outside and if negated, it can be used for the inside. User snibgo's code is about as efficient as it get...
by whugemann
2013-03-27T07:49:23-07:00
Forum: Users
Topic: Contrast stretch for an arbitrary quadrangle
Replies: 13
Views: 12821

Re: Contrast stretch for an arbitrary quadrangle

OK, -mask does the trick. I knew about -region, but that only allows to produce a rectangle AFAIK. But I was asking for an arbitrary quadrangle -- or, even more general, an arbitrary shape. The darker region in the example photograph may look like a rectangle, but it isn't exactly! @Fred: You probab...
by whugemann
2013-03-26T10:28:49-07:00
Forum: Users
Topic: Contrast stretch for an arbitrary quadrangle
Replies: 13
Views: 12821

Contrast stretch for an arbitrary quadrangle

I have a bunch of JPEG images steeming from a speed trap, which look like http://www.unfallrekonstruktion.de/imagemagick/frame.jpg The above image shows a rectangular section taken from the original image with reduced resolution. The trick is that all images contain a quadrangle which spans around t...
by whugemann
2013-03-17T10:25:48-07:00
Forum: Bugs
Topic: Montage's file name globbing under Windows
Replies: 6
Views: 10784

Re: Montage's file name globbing under Windows

Well, it says: "Export new Windows binaries" for Version 6.7.4-2 – whatever that specifically means.
The changelog is a good hint. I will have a look at it in the future myself.
by whugemann
2013-03-16T11:22:49-07:00
Forum: Bugs
Topic: Montage's file name globbing under Windows
Replies: 6
Views: 10784

Re: Montage's file name globbing under Windows

I have just digged deeper into the problem and read http://www.imagemagick.org/Usage/files/#read_meta. Something must have changed in recent IM versions, as it does no longer behave that way. Say we have three images in a directory: i1.jpg i1.jpg ä.jpg Then identify i*.jpg will identify the two corr...
by whugemann
2013-03-15T00:41:25-07:00
Forum: Bugs
Topic: [SOLVED]6.8.3+Win7 x86-issues with "convert wizard.jpg win:"
Replies: 2
Views: 5133

Re: IM 6.8.3 + Win7 x86 - issues with "convert wizard.jpg wi

Basically, the 'win:' pseudo output format is superfluous in Windows. It would suffice just to type 'wizard.jpg' into the cmd box (or the Windows Run box) and Windows would start the associated application and load the image. So this instruction is only confusing for Windows users and the non-functi...
by whugemann
2013-03-10T02:56:57-07:00
Forum: Bugs
Topic: Montage's file name globbing under Windows
Replies: 6
Views: 10784

Montage's file name globbing under Windows

The behaviour I reported under http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=22935 is probably a new bug, i.e. filename globbing does no longer function if the directory path contains non-ASCII characters, e.g. montage hähühö\*.jpg -geometry 256x256+8+8 -tile 6x photoindex.jpg This...