RMagick 1.9.1 is now available on RubyForge. This is primarily a bug-fix release. The most important change is an enhancement suggested by Ara T. Howard last week, here on comp.lang.ruby. This change enhances the Image#import_pixels method to accept a buffer of binary pixel data in the form of a string argument. In this case import_pixels can pass the pixel data directly to ImageMagick without going through the overhead of extracting the pixel data from an array of Fixnums.
I have run a benchmark comparison between using an array argument and using a string argument. I could copy'n'paste the the results here but it's far simpler just to say that using the string buffer is WAAAYYY faster. This is a much faster approach for importing pixel data into very large images. Details on this change are in the import_pixels documentation bundled with RMagick.
A complete list of all the fixes and enhancements in this release is available on the RMagick home page: http://rmagick.rubyforge.org. RMagick 1.9.1 can be downloaded from: http://rubyforge.org/projects/rmagick/
RMagick is an interface to the ImageMagick (www.imagemagick.org) and GraphicsMagick (www.graphicsmagick.org) image processing libraries. It supports more than 90 image formats, including GIF, JPEG, and PNG. RMagick now includes RVG, a high-level 2D drawing API based on SVG. The package includes comprehensive HTML documentation.