The imagemagick tag has no wiki summary.
0
votes
1answer
5 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 ...
1
vote
0answers
45 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
109 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
55 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 ...
2
votes
2answers
536 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
107 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
106 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
55 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
63 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
58 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
93 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
158 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
61 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
58 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
92 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
votes
0answers
67 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
185 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
82 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
45 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
102 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
70 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
309 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
351 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
89 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
1answer
96 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
38 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
147 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
57 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?
0
votes
0answers
66 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
120 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
167 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
60 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
88 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 ...
2
votes
1answer
1k 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 ...
5
votes
2answers
102 views
Mass recoloring of PNGs from command line
Similar to the mass rescaling command this site taught me here, is there a command-line trick for mass recoloring?
To make it specific, suppose I have a bunch of images with RGB and alpha values:
...
1
vote
1answer
49 views
ImageMagick command sometimes fails
I have an ImageMagick command that is something like this:
convert "/path/to/photo" -set comment "(c) my company" -resize WxH miff:- | composite -dissolve 30 -geometry +40+138 -quality 80 ...
2
votes
1answer
250 views
Linux: concatenate several images into a PDF file with several images per page
I know that ImageMagick's convert program can be used as follows to convert a collection of images -- say, in PNG format -- to a PDF file:
convert *png output.pdf
The problem with this is that each ...
0
votes
0answers
58 views
Imagemagick 6.6 cmyk sepia colored images
i'm having problems using Imagemagick 6.6 and cmyk images. doing a rgb conversion with a colorprofile is giving me a sepia like effect on my images. When i'm executing the same command on Imagemagick ...
0
votes
3answers
375 views
Square thumbnails with ImageMagick (convert)?
How to create square/cropped thumbnail using ImageMagick ? Cropping like below.
2
votes
2answers
289 views
Resizing and cropping images to 6x4 to width of 1024
I have a mixed set of images, each one having a slightly different resolution with a slightly different aspect ratio from the other images.
I have tried using commands like:
convert -resize
and:
...
0
votes
2answers
591 views
How to turn a PDF document upside down [closed]
Possible Duplicate:
How to save rotated Adobe pdf file?
I'd like to rotate by 180 degrees each page in a high-resolution .pdf, but don't know how. In ImageMagick, using 'convert -flip ...
0
votes
1answer
110 views
ImageMagick cannot use identify on remote image if it contains a port number
I am having trouble using exec identify on a remote image with imagemagick if the url contains a port number. So the url appears like this: http://isite.com:81/image.jpg If I remove the :81 it works. ...
0
votes
2answers
274 views
ImageMagick requirement for Paperclip plugin
The Ruby on Rails paperclip plugin says that I need to install ImageMagick in order to use Paperclip. I'm typically really bad at getting things installed and running, so I was wondering if anyone ...
1
vote
3answers
307 views
How to adjust and combine multiple lower quality photos into one better using FOSS?
I have multiple noisy photos (caputed without tripod) that needs to be adjusted (moved/rotated) and averaged.
How it's better to do it in Linux with FOSS console-based programs?
Current way is ...
0
votes
1answer
172 views
ImageMagick is incorrectly showing some images as negatives
1 2 3 4
Image 1 is the original main file as displayed by ImageMagick display. It is showing up as a negative, but shouldn't be. When displayed using other tools, it's ...
1
vote
1answer
247 views
Imagemagick convert creates monochrome output only
I have a book scan as a pdf. When I open it with Adobe Reader, it looks like grayscale. When I open it with IrfanView, it looks like grayscale, and the Information option tells me that the image is ...
1
vote
1answer
190 views
Why does Imagemagick convert make the first page of output PDFs too large?
When I run
convert *.jpg output.pdf
the output looks like this:
Why is the first page bigger then the others in the PDF? The original JPEGs were all the same size!
0
votes
1answer
939 views
How to install Imagick on Mac OS with XAMPP
I'm having some trouble installing Imagick on a Mac. I have XAMPP installed and when I run 'sudo pecl install imagick', I get this error:
checking ImageMagick MagickWand API configuration program... ...
2
votes
2answers
865 views
Bulk convert PNG-24 to PNG-8 files with best quality
Can anybody recommend a good method of bulk converting a large amount of PNG-24 files to PNG-8 with as little loss of quality as possible and maintaining transparency?
I've tried ImageMagick but the ...
0
votes
1answer
124 views
Configure macports to build and install to user-specified directory?
I want several machines on my network to be able to use some libraries installed with MacPorts (the libraries are ImageMagick and its dependent image libs).
I do not want to build and install for ...
