The imagemagick tag has no wiki summary.
1
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1answer
29 views
Make imagemagick's `display` exit at terminal, preserving the window (single instance mode)
When I use imagemagick's display from command line, say:
$ display -density 150 test1.pdf
... then display locks in the command line, until you exit the window (or press CTRL+C in terminal).
...
1
vote
1answer
68 views
Can I use ImageMagick to remove the password from a PDF?
If I have a PDF and I have its password, I can merely send it to a PDF printer to get a new PDF with the same contents and no password. The process is not exactly painless though (Ubuntu's inbuilt PDF ...
1
vote
2answers
107 views
How do I change the canvas size of a PNG with ImageMagick (GraphicsMagick)? (How to pad with transparency?)
Alternatively: How do I take a non-square PNG and "fill out" the "rest" of the image with transparency so that the resulting square image has the original image centered in the square?
ULTIMATELY, ...
0
votes
0answers
54 views
Extract and combine alpha channel with graphicsmagick
I want to combine the gray value in 11_.jpg as alpha channel of 11.jpg(which contains RGB channels). With imagemagick I can do:
convert 11_.jpg 11.jpg -channel alpha -combine 11.png
But I ...
0
votes
1answer
566 views
Undefined symbols for architecture x86_64: Mac OSX when installing ImageMagick
I am trying to install imagemagick and on my snow leopard MacOSX with homebrew.
when i run:
sudo brew install imagemagick
it breaks at this point with the following error log.
ld: warning: ...
0
votes
1answer
68 views
Import (ImageMagick) does not capture overlays
I've been using import from Imagemagick to take screenshot of my second monitor every 15 seconds, and then later assembled the images using mencoder - thus creating a timelapse of what has been going ...
0
votes
3answers
163 views
How to batch-convert JPG files to uncompressed TIFF
I need to collect 1000 uncompressed TIFF files. I have a large set of JPG images, so I decided to convert them to TIFF format. The loss in quality is ok in this case for me.
I used the following ...
0
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0answers
109 views
MagickWand no longer working after PHP update, OS X Lion
I'm running OS X Lion using the pre installed version of Apache and PHP. PHP has recently updated from 5.3.6 to 5.3.8 (I assume though an automatic software update) and since this update MagickWand ...
0
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0answers
24 views
PhotoViewer.dll for Windows XP
I know it comes with Windows 7, but is there an equivalent standalone module for XP's "Picture and Fax Viewer"?
0
votes
1answer
96 views
How to convert a photo to a black and white image by imagemagick?
How can I convert a jpeg photo to black and white (not grayscale) image like output of a FAX scanner, by imagemagick?
0
votes
1answer
226 views
lossless PNG to video in Imagemagick
As an intermediate step in creating an animation, I need to put a bunch of sequential PNGs into a movie file. I tried ffmpeg but was getting compression and artifacting even when I set quality to ...
1
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0answers
58 views
can I remove imagemagick by deleting directories?
I posted this to StackOverflow, but probably belongs here.
I'm on OSX Lion, trying to get back to basics so I can run RMagick in Rails 3.0, using rvm.
When I tried to add the RMagick gem to Rails ...
0
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0answers
163 views
Using display to draw fullscreen pictures on a remote host
I've been using "display" to display pictures on a remote computer via SSH.
My simple command is the following:
display -display :0 file.jpg
I am struggling to find the right option to show the ...
0
votes
1answer
42 views
Batch Image Labelling
I have an image I would like to make 50-100 copies of, but for each copy a label is added in the form of a number corresponding to the copy number.
Is there existing software that does this?
Is there ...
0
votes
1answer
139 views
ImageMagick refuses to render solid colored rectangle. Why?
I found this example in the imagemagik website:
convert -size 100x100 canvas:khaki canvas_khaki.gif
which should generate a 100x100 khaki square in the given filename. I didn't manage to run this ...
2
votes
2answers
208 views
PDF => raster, is it possible to adapt the sampling resolution to the input page size?
I am using convert (Imagemagick component, delegating to Ghostscript in background) to transform the first page of PDF files to images.
Usually, convert -density 200 file.pdf[0] first_page.png will ...
1
vote
1answer
435 views
Convert ppt to jpg
I am using an Ubuntu system. I want to convert ppt or pptx to jpg using terminal commands.
I have libreOffice and ImageMagick installed in my system. I am successfully converting pdf to jpgs using ...
2
votes
1answer
188 views
Keep alpha transparency in indexed PNG from Fireworks when batch resizing using convert (ImageMagick)
I have a special case where I'm using alpha transparency in indexed PNGs from Fireworks to keep the file size of PNG's in an iOS game down. (That is, indexed colors like an 8bit PNG but alpha ...
3
votes
4answers
243 views
How can I tell if my image is CMYK from Linux command line?
I'm converting images from RGB to CMYK. How can I tell if my image is CMYK from the Linux command line?
1
vote
1answer
111 views
Any way to make two images the same size and/or aspect ratio in ImageMagick?
Suppose I want to have two images side by side in a slide but they are different sizes. I know I can use "mogrify" and "convert" and all that to resize them, but it's a pain to type in the exact ...
4
votes
4answers
2k views
I have compiled ImageMagick on my CentOS, and RMagick won't install
I installed ImageMagick through, (Using ImageMagick 6.7.3-7)
./configure --prefix=/usr && make && make install
When I try to
gem install imagemagick
I get
Building native ...
0
votes
2answers
396 views
Taking a proper screen shot with GNOME-Shell non-disruptively
Running Fedora 15 (moving to 16 soon) - 2.6.40.6-0.fc15.x86_64
I would like to take a screen shot every few seconds - something like:
$ while true; do import -w root png:$(date +%F_%R:%S).png; sleep ...
1
vote
1answer
285 views
JPG files are too small when converted from PDF with imagemagick
I'm on Ubuntu 10.04 with imagemagick. I used this command:
convert myfile.pdf -density 300 file.jpg
This works well, but the JPGs are only about an inch high. How can I preserve the paper size in ...
0
votes
1answer
114 views
Image to PDF quality
I am converting multiple jpg images to a single PDF using following command
convert *.jpg mybook.pdf
but the pdf quality is not good.
Is there a way to retain the original quality of images in ...
1
vote
0answers
143 views
Installing a OTF Font under Ubuntu Server
I have a OTF Font I want to use with ImageMagick.
Last times I had to install it on other machines, I copied it into /usr/share/fonts and ran fc-cache, then, convert -list font | grep "myfont" has ...
1
vote
1answer
99 views
Limiting threads of ImageMagick - not getting limited
I'm on a virtual machine, and according to this document in the "Cache Storage and Resource Requirements section", if you're on a VPS you should probably limit the threads to two. I am. But before ...
1
vote
1answer
158 views
GraphicsMagick error reading PNG file
When trying to read a large PNG file, GraphicsMagick command
gm convert pallaso1.png pallars-sobira.jpg
just displays this error
c:\progs\GraphicsMagick\gm convert: Read Exception (PALLASO1.PNG).
...
0
votes
0answers
255 views
Imagemagick convert to resize a YUV image
I have a YUV420 image of size 1280x720. I am trying to resize it to 720x576 using convert (Imagemagick) using below commandline options. But the generated output file doesnot seem to be a proper ...
2
votes
1answer
109 views
how to change the color that's used for transparency automatically, or programmatically?
For every picture (e.g. bmp, png), a transparent point actually does have a color
The transparency is either
defined by alpha channel mask (e.g. in PNG)
or one of the colors is defined as ...
2
votes
2answers
103 views
Is it safe to use ImageMagick on user images?
I've heard there may be security concerns when using ImageMagick on arbitrary user-provided images. For example, the link below gives evidence that there used to be some buffer overflow exploits. ...
1
vote
0answers
214 views
From Illustrator to png with the help of ImageMagick
Currently I save my files in Illustrator as .pdf files so that I can use ImageMagick to manipulate the resulting images programatically (cropping, adding borders, resizing, etc) and convert them to ...
0
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0answers
134 views
Inverted colors on opening PDF in photoshop [closed]
When opening this PDF in Photoshop(CS3) all colors are automatically inverted.
How can I change this behaviour? The file has correct colors when opening it with Adobe Acrobat.
The file is generated ...
0
votes
0answers
203 views
ImageMagick “display” command returns “delegate library support not built-in” error [closed]
Possible Duplicate:
Cannot run 'display' after ImageMagick install on Ubuntu
When I enter:
# display logo.gif
I get the following error:
display: delegate library support not ...
2
votes
1answer
117 views
Linux wallpaper change
I am looking for a tool that can resize images and display them on the root window of an X11 display at a specific coordinates. I can use display from iagemagick like so
display -window root ...
0
votes
0answers
79 views
Why does trying to make thumbnails of all the pages of a PDF with ImageMagick fail mid way?
I am trying to thumbnail all of the pages in a PDF using ImageMagick. Some process fine, but some of the PDFs fail midway through.
Here is the log:
convert sample.pdf -resize 190 test.jpg
** ...
-2
votes
4answers
159 views
ImageMagick is truncating (squaring) my icons on resize
Trying to resize from 48x48 icon to 16x16 and the resulting file from imagemagick is 16x16 but cut off around the square.
Command:
convert -resize "16x16" businessman_add.ico -depth 8 mynew.ico
...
0
votes
1answer
117 views
Should jpegtran remove more bytes than mogrify strip?
I'm currently using mogrify -strip image.jpg to remove unwanted bytes from images, it was suggested I could remove further data by using jpegran from libjpeg, something like:
jpegtran -copy none ...
1
vote
1answer
853 views
How do you re-install a package with Homebrew (Mac)?
Struggling to find good Homebrew documentation (or tutorial)...
In the mean time I need to reinstall ImageMagick that was installed with Homebrew (brew install imagemagick) and not sure if I should ...
0
votes
2answers
450 views
terminal transparency, Imagemagick, and X11 root window problem
I use Ubuntu Natty, urxvt (with 256 colours), and Imagemagick (display -window root [...]) to set the root window to a picture. When I use the transparancy (-tr) option on urxvt, I get the Ubuntu X ...
2
votes
1answer
137 views
How to render some text with given font file?
How to just render some text with the given font? Expecting something like:
echo "The slow cyan snail creeps under the eager cat" | render_text --font ./qqq.ttf --scale=18 -o text.png
I expect this ...
2
votes
2answers
205 views
Convert a series of PNGs to an animated gif or video file
I have a series of PNG image files that I want to convert into animation.
What is the best way to convert them into a GIF?
Also I have tried various tools to convert them into a video file (like ...
1
vote
1answer
66 views
append images using a grid
convert +append ...
appends images horizontally.
convert -append ...
appends images vertically.
Imagine i have a set of N images and i want to create to append the images following a grid of N/2 ...
4
votes
1answer
176 views
Parallel processing slower than sequential?
While converting some images using ImageMagick, I noticed a somewhat strange effect. Using xargs was significantly slower than a standard for loop. Since xargs limited to a single process should act ...
1
vote
1answer
81 views
Appending images horizontally in ImageMagick
convert -append 1.jpg 2.jpg out.jpg
This command appends 1.jpg and 2.jpg vertically. What is the command to do this horizontally?
1
vote
0answers
119 views
Replacing a colour with GD/imagemagick and maintain semi transparent channel (PNG)
I have an image which has only one colour - black. The anti aliasing is done with semi transparent black pixels of various opacity. I want to swap all the black (including the semi transparent black) ...
0
votes
0answers
213 views
Comparing two images: get the XY location of any differences found
I'm trying to compare two images using the ImageMagick Compare module; everything seems okay, but I want to know the exact XY locations of the 'differences' found. How can I get this?
I already ...
2
votes
2answers
391 views
What tool can be used to blur images?
Preferably something in paint, or some other built in tool, and definitely free. Does not need to be fancy, just what amounts to smudging the text in an image.
1
vote
1answer
101 views
What does the output of Imagemagicks identify mean?
Can someone please explain me the following output of imagemagicks identify?
image.gif GIF 345x49 345x49+0+0 8-bit PseudoClass 256c 1.79KB 0.000u 0:00.000
I know the follwing:
I know that GIF is the ...
0
votes
1answer
127 views
Imagemagick - JPG And PNG extension not working
I have installed ImageMagick-6.5.7-8 and ghost script 8.64 on ubuntu. They are installed successfully but JPG and PNG extension not working here. GIF extension working successfully.
I have installed ...
3
votes
1answer
3k views
Combine multiple images using ImageMagick
I would like to combine multiple images into one image using ImageMagick. To explain a little better, I want the result to look similar to this:
That is, I have a number of screen shots, and I want ...
