testic on wrote... | Hi all, | | Is it possible to use ImageMagick to taper an image? For example, I | want to take my source image and make it twice as high on its left | edge than its right? | Currently -- not directly. This is an example of proportional or trapezoidal transformation.
An indirect example of doing this in IM is using Distortion Maps. http://www.cit.gu.edu.au/~anthony/graphics/imagick6/distorts/#displace_maps This is primitive and hard to control (generated using a mathematical formula). | Also, for this I am using PNG files with transparency, so is it | possible to have any 'new' pixels created in the output image to be | transparent? | Yes, just set "-channels RGBA" so the alpha channel is also transformed. A few proposals have been put forward however for a proper transformation operator.. http://www.cit.gu.edu.au/~anthony/graphics/imagick6/bugs/future/#trapezoid Nothing has been done at this time however. Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]> ----------------------------------------------------------------------------- The Definition of an Upgrade: Take old bugs out, put new ones in. ----------------------------------------------------------------------------- Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/ _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
