How do I prevent ImageMagick convert from scaling images up?

Posted by Kyle on Stack Overflow See other posts from Stack Overflow or by Kyle
Published on 2010-05-06T15:27:36Z Indexed on 2010/05/06 15:38 UTC
Read the original article Hit count: 202

Filed under:

image-processing

|

imagemagick

|

convert

|

resizing

|

image

I'm using ImageMagick's convert tool to generate image thumbnails for a web application. I'm using notation like so: 600x600>

The images are indeed scaled to 600px wide/tall (depending on the longer side) and proportions are properly maintained, however images less than 600px in either direction are scaled up — this behavior is not desired. Is there a way to prevent convert from scaling images up if the destination dimensions both exceed the original image size?

© Stack Overflow or respective owner

Related posts about image-processing

image processing

as seen on Stack Overflow - Search for 'Stack Overflow'
where i can find useful tutorials about background subtraction?what are the algorithms? >>> More
Basic image processing

as seen on Stack Overflow - Search for 'Stack Overflow'
i have two image of a parking space.one is empty.and another is with some car.now how can i detect the empty space in the image?or how can i detect the car in the image? >>> More
basic image processing

as seen on Stack Overflow - Search for 'Stack Overflow'
what is noise in an image? >>> More
open source image processing lib in java

as seen on Stack Overflow - Search for 'Stack Overflow'
can any one suggest a good open soucre image processing lib in java? i want to devleop a devlop a ORM reader using it. >>> More
Photoshop batch image processing based on EXIF?

as seen on Super User - Search for 'Super User'
I use Photoshop to batch convert my RAW files to JPG. I was wondering if there was a way to make it take different actions based on EXIF? With my particular camera lens, if I open it all the way to F1.7 there is noticeable vignetting, but stopping down smaller doesn't have that problem. What I'd like… >>> More

Related posts about imagemagick

Can't seem to install imagick

as seen on Server Fault - Search for 'Server Fault'
I'm trying to install the PHP PEAR PECL extension "imagick" (image magick), but failing horribly. It seems that I keed installing packages to progress, but this one has me stumped. It seems to fail all the way at the bottom. Please Note: I'm using ArchLinux, apt-get doesn't save me. [root@Crux… >>> More
difference between compiled and installed via rpm (zypper)

as seen on Server Fault - Search for 'Server Fault'
In an openSUSE 11.1 I download, compile and install ImageMagick via: wget ftp://.../pub/graphics/ImageMagick/ImageMagick-6.7.7-0.zip unzip ImageMagick-6.7.7-0.zip cd ImageMagick-6.7.7-0 ./configure --prefix=/usr/local/ImageMagick make make install Everything works nicelly until I discover that… >>> More
ImageMagick failing to convert to JPG

as seen on Server Fault - Search for 'Server Fault'
Hi: We recently installed the latest version of ImageMagick onto our Linux server. I seem to be having issues performing the most basic of tasks. I am running this command line: /usr/bin/convert /location/to/source/design.ai /location/to/save/output.jpg Unfortunatly is saves design.jpg as an… >>> More
Install ImageMagick on linux shared hosting

as seen on Server Fault - Search for 'Server Fault'
Is the installation of ImageMagick library possible for a non-root user in a shared hosting environment? >>> More
Recent ImageMagick on CentOS 6.3

as seen on Server Fault - Search for 'Server Fault'
I'm having a terrible time trying to get a recent version of ImageMagick installed on a CentOS 6.3 x86_64 server. First, I downloaded the RPM from the ImageMagick site and tried to install it. That failed due to missing dependencies: error: Failed dependencies: libHalf.so.4()(64bit) is needed… >>> More