Added today LC-Magick #10: Color Tonality Curve Variant 1: Pure LC Script, use it best with LC 6 (slow with LC 8/9). Variant 2: Uses JS in a (hidden) browser widget for use with LC 8/9.
Variant 1 runs on Mac/ Win 7+10/ linux 32bit with LC 6/7/8/9 and Raspi 6/7. Variant 2 runs on Mac/ Win 7+10/ Ubuntu 64bit with (latest) LC 8/9. A tone curve has to map each of the color values 0-255 of your image to a value in range 0-255. Some well known image processing apps use internally for setting saturation, brightness or gamma also such curves. You can set the tone curve = by an editable formula or = by 2 up to 9 handles (control points) that determine either, ... a polygon chain (linear pieces between the control points), ... a bezier curve of order 1=linear, 2= square ... up to order 8 (usually most control points are not on the curve), ... a natural spline curve (control points are on the curve), ... a clamped spline curve (control points are on the curve). The LC-Magick Collection LC-Magick #10 - Color Tonality Curve (HermannH) http://forums.livecode.com/viewtopic.php?p=163787#p163787 LC-Magick #9 - Selective Gray (HermannH) http://forums.livecode.com/viewtopic.php?p=154277#p154277 LC-Magick #8 - MoonEffect (Fisheye) (HermannH and BerndN) http://forums.livecode.com/viewtopic.php?p=153159#p153159 LC-Magick #7 - Cuboid (HermannH) http://forums.livecode.com/viewtopic.php?p=153076#p153076 LC-Magick #6 - Bilinear Perspective Distortion (HermannH and BerndN) http://forums.livecode.com/viewtopic.php?p=150757#p150757 LC-Magick #5 - Circular (Polar) Image Distortion (HermannH and BerndN) http://forums.livecode.com/viewtopic.php?p=149999#p149999 LC-Magick #4 - Linear Perspective Image Distortion (HermannH) http://forums.livecode.com/viewtopic.php?p=148647#p148647 LC-Magick #3 - Image Multiplexing (HermannH) http://forums.livecode.com/viewtopic.php?p=141272#p141272 LC-Magick #2 - Pointillize (HermannH) http://forums.livecode.com/viewtopic.php?p=141051#p141051 LC-Magick #1 - Blur and Pixelate (ScottR) http://tactilemedia.com/blog/2016/03/26/update-blur-effect-plus-pixelize-bonus/ A lot of the ideas above is based on ideas presented in imageMagick's documentation, see http://www.imagemagick.org/Usage/ _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode