rmagick

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How to read a portion of an image using RMagick?

I\'m trying to load a large image and crop it into tiles really fast and with low memory consumption. An example is the way gdal2tiles s开发者_如何学Pythoncript http://www.maptiler.org/ does it, but g[详细]

2023-02-11 04:52 分类：问答
Image histogram with mini_magick or image_science?

Is it possible to fetch the histogram of an image with mini_magick or image_science? I am afraid mini_magicks usage of mogrify does not allow such information retrieval. image_science is hardly docu[详细]

2023-02-09 05:51 分类：问答
I can't install rmagick gem on windows

I used ruby 1.9.2 and rails 3.0.3. iam trying to install rmagick gem but when i run bundle install I got an error tells me:[详细]

2023-02-08 06:11 分类：问答
uninstall a manually compiled package in unix

I have installed imagemagick by downloading and compiling the source.how to correctly uninstall the ImageMagick that was manually 开发者_StackOverflow社区installed in order to installed rmagick gem.[详细]

2023-02-06 04:13 分类：问答
RMagick: scale and resize image for thumbnail

I want to resize/scale an image. The originals have not the same dimensions like 300x200 or 512x600. I want to resize the image to 100x100 but DONT crop anything from the image or change ratio. Ideall[详细]

2023-02-05 00:56 分类：问答
Problems installing RMagick with Paperclip in Rails 3

I\'m trying to use paperclip in rails and when I\'m doing the \"bundle install\" I\'m getting the followin开发者_开发百科g error:[详细]

2023-02-02 15:23 分类：问答
rails convert html to image

I\'m looking for a way to convert html tags to a image on the fly... That means, that I want to be able to make a image_tag with a path to a method which returns the image c开发者_开发问答reated form[详细]

2023-02-01 15:13 分类：问答
rmagick won't find imagemagick on the server

I\'m deploying a railsapp to ubuntu rmagick is installed via \"bundle install vendor\".it installs , and the app runs -- but this error gets thrown :[详细]

2023-02-01 08:22 分类：问答
How to check for white image backgrounds using RMagick or any other Ruby Gems?

I am trying to validate images based on few criteria: The image should not have a border [I could accomplish to an extent using RMagick and its \'trim\' method.][详细]

2023-02-01 03:20 分类：问答
Facing issues with rmagic gem while installing in Windows machine and it is for Rails 3 application.. ruby version 1.8.7

I am facing issues with rmagic gem while installing in Windows machine and it is for Rails 3 application.. ruby version 1.8.7[详细]

2023-01-31 05:58 分类：问答