Page 289 - Webapplication11_C11_Flipbook
P. 289

Edge Detection Filter          Description                              Output
                    Edge                Has several edge detection methods












                    Neon                This filter applies a vivid neon effect to
                                        any edges found in the current layer or
                                        selection.









                    Sobel               The  Sobel  filter  distinguishes  between
                                        the  horizontal  and  vertical  edges  on  a
                                        scaled  picture.  RGB-scaled  pictures  are
                                        generated from colour images.







                    Image Gradient Filter  This filter finds gradient boundaries along
                                        one or both gradient directions.











                 Generic Filters

                 Generic filters serve as a general purpose filter for those that cannot be put elsewhere.


                                     Convolution Matrix                                   Dilate
                       It is used to examine an image's pixel value by utilising   The active layer or selection’s dark regions are widened
                        mathematical formulas. You can build a custom filter      and enhanced by this filter.
                                       using this filter
                                                                                       Distance Map
                                           Erode                      Each pixel in the image is changed to a grey value based
                          The active layer or selection’s bright regions are   on how far it is from the closest pixel representing
                              widened and enhanced by this filter.      an obstacle, which is typically a boundary pixel. The
                                                                          distance can be calculated in a variety of ways.

                                                                                      Multimedia Design Using GIMP   287
   284   285   286   287   288   289   290   291   292   293   294