rmagick

I've spent a long time trying to go from a CMYK EPS to a RGB PNG using RMagick and Rails. Hopefully this will be of use to someone: def convert_image_from_cmyk_to_rgb( image ) #puts image.alpha? if image.colorspace == Magick::CMYKColorspace image.strip! image.add_profile("#{Rails.root}/lib/USWebCoatedSWOP.icc") image.colorspace == Magick::SRGBColorspace image.add_profile("#{Rails.root}/lib/sRGB.icc") end image end You can download the ICC files direct from Adobe at http://www.adobe.com/support/downloads/iccprofiles/iccprofiles_win.html The only thing I haven't been able to suss is how to

From Rmagick guide: Converting an image to another format Converting an image to another format is as simple as writing the image to a file. ImageMagick uses the output filename suffix (".jpg" for JPEG, ".gif" for GIF, for example) or prefix ("ps:" for PostScript, for example) to determine the format of the output image. Is there a way to convert image in memory? Dan Grahn # assuming you have an image # img = Magick::Image.new( 100, 100 ) img = Magick::Image.from_blob( img.to_blob { self.format = "png" } ) Source: RMagick Docs Here's an example on how to give it to the user image.format = "png

I'm using a Mac pro Lion for development with ImageMagick Q16, RVM and ruby 1.8.7 I can use the following in IRB: Take note on the different caps in the word 'rmagick' require 'rubygems' => true require 'rmagick' => true require 'RMagick' LoadError: no such file to load -- RMmagick On my Debian Squeeze 6.0 production server with ImageMagick Q16, RVM and ruby 1.8.7 I can use the following in IRB: require 'rubygems' => true require 'rmagick' LoadError: no such file to load -- rmagick require 'RMagick' => true 'gem list' shows on both OS's in lowercase. rmagick (2.13.1) I would like to know the

I have a text that may contain emojis. I want to render it into JPEG image with RMagick (I can also use ImageMagick directly). I was able to render only monochrome emojis with AndroidEmoji.ttf, but ImageMagick renders interrogation signs if I use AppleColorEmoji.ttf. Here's how I do it: require 'rmagick' granite = Magick::ImageList.new('granite:') canvas = Magick::ImageList.new canvas.new_image(300, 100, Magick::TextureFill.new(granite)) input = "👠 👯👢 👣" text = Magick::Draw.new text.font = 'AppleColorEmoji.ttf' text.pointsize = 20 text.gravity = Magick::CenterGravity text.annotate(canvas, 0, 0

I'm trying to upload images to aws s3 with paperclip but I get this error Command :: file -b --mime '/var/folders/d_/k4_ps9hj5fj_3df5t210vjym0000gn/T/2611a2396a4af6938e5c5867c8bb409f20140515-7787-1u773ft.jpg' Command :: identify -format '%wx%h,%[exif:orientation]' '/var/folders/d_/k4_ps9hj5fj_3df5t210vjym0000gn/T/2611a2396a4af6938e5c5867c8bb409f20140515-7787-1rep3kt.jpg[0]' 2>/dev/null [paperclip] An error was received while processing: #<Paperclip::Errors::NotIdentifiedByImageMagickError: Paperclip::Errors::NotIdentifiedByImageMagickError> Command :: identify -format '%wx%h,%[exif:orientation