NAME GD::Image::Scale2x - Implementation of the Scale2x algorithm for the GD library SYNOPSIS use GD; use GD::Image::Scale2x; # load an image my \$image = GD::Image->new( 'file.png' ); # scale2x, 3x, and 4x my \$scaled2x = \$image->scale2x; my \$scaled3x = \$image->scale3x; my \$scaled4x = \$image->scale4x; # scale a certain area # (10, 10) to (30, 30) my \$scaled = \$image->scale2x( 10, 10, 20, 20 ); DESCRIPTION This module implements the Scale2x algorithm (as well as 3x and 4x). From the Scale2x web site: Scale2x is real-time graphics effect able to increase the size of small bitmaps guessing the missing pixels without interpolating pixels and blurring the images. The algorithm itself is explained at http://scale2x.sourceforge.net/algorithm.html. You can see some example results by looking through the test directory. METHODS scale2x( [ \$source_x, \$source_y, \$width, \$height ] ) Takes an image and produces one twice a big. From the Scale2x web site: The effect works repeating a computation pattern for every pixel of the original image. The pattern starts from a square of 9 pixels and expands the central pixel computing 4 new pixels. You can specify a portion of the original image by specifying a source x and y plus a width and height. scale3x( [ \$source_x, \$source_y, \$width, \$height ] ) A similar algorithm to scale2x, except that it produces a 9-pixel result. scale4x( [ \$source_x, \$source_y, \$width, \$height ] ) Same as scale2x done twice over. SEE ALSO * Algorithm::Scale2x * GD * http://scale2x.sourceforge.net/ AUTHOR Brian Cassidy COPYRIGHT AND LICENSE Copyright 2005-2009 by Brian Cassidy This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.