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The branch, master has been updated via c790f88c116700214c4bd14a8d350f302ba12993 (commit) from 62f5963ad7a384999f52b96a18f5c253cde5290c (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- http://repo.or.cz/w/gfxprim.git/commit/c790f88c116700214c4bd14a8d350f302ba12... commit c790f88c116700214c4bd14a8d350f302ba12993 Author: Cyril Hrubis <metan@ucw.cz> Date: Sun Jul 22 12:53:12 2012 +0200 doc: Add median filter docs. diff --git a/doc/filters.txt b/doc/filters.txt index 68d7180..d15b3aa 100644 --- a/doc/filters.txt +++ b/doc/filters.txt @@ -1068,3 +1068,60 @@ image:images/dither/lenna_RGB333_HP_small.png[ "3-bit RGB Hilbert-Peano", link="images/dither/lenna_RGB333_HP.png"] +Median +~~~~~~ + +[source,c] +------------------------------------------------------------------------------- +#include <filters/GP_Median.h> +/* or */ +#include <GP.h> + +int GP_FilterMedianEx(const GP_Context *src, + GP_Coord x_src, GP_Coord y_src, + GP_Size w_src, GP_Size h_src, + GP_Context *dst, + GP_Coord x_dst, GP_Coord y_dst, + int xmed, int ymed, + GP_ProgressCallback *callback); + +GP_Context *GP_FilterMedianExAlloc(const GP_Context *src, + GP_Coord x_src, GP_Coord y_src, + GP_Size w_src, GP_Size h_src, + int xmed, int ymed, + GP_ProgressCallback *callback); + +int GP_FilterMedian(const GP_Context *src, + GP_Context *dst, + int xmed, int ymed, + GP_ProgressCallback *callback); + +GP_Context *GP_FilterMedianAlloc(const GP_Context *src, + int xmed, int ymed, + GP_ProgressCallback *callback); +------------------------------------------------------------------------------- + +Constant time median filters (the computational complexity is independent of +radius size). + +The xmed and ymed are radius values for x and y. The algorithm uses xmed +respectively ymed pixel neighbors from each side so the result is median of +rectangle of 2 * xmed + 1 x 2 * ymed + 1 pixels. + +.Original Image; Median 3x3, 5x5, 7x7, 9x9 +image:images/dither/lenna_small.png[ + "Original Image", + link="images/dither/lenna.png"] +image:images/median/lenna_small_med_3_3.png[ + "Median 3x3", + link="images/median/lenna_med_3_3.png"] +image:images/median/lenna_small_med_5_5.png[ + "Median 5x5", + link="images/median/lenna_med_5_5.png"] +image:images/median/lenna_small_med_7_7.png[ + "Median 7x7", + link="images/median/lenna_med_7_7.png"] +image:images/median/lenna_small_med_9_9.png[ + "Median 9x9", + link="images/median/lenna_med_9_9.png"] + diff --git a/doc/images/median/lenna_med_3_3.png b/doc/images/median/lenna_med_3_3.png new file mode 100644 index 0000000..abbc202 Binary files /dev/null and b/doc/images/median/lenna_med_3_3.png differ diff --git a/doc/images/median/lenna_med_5_5.png b/doc/images/median/lenna_med_5_5.png new file mode 100644 index 0000000..f205d49 Binary files /dev/null and b/doc/images/median/lenna_med_5_5.png differ diff --git a/doc/images/median/lenna_med_7_7.png b/doc/images/median/lenna_med_7_7.png new file mode 100644 index 0000000..5b11b19 Binary files /dev/null and b/doc/images/median/lenna_med_7_7.png differ diff --git a/doc/images/median/lenna_med_9_9.png b/doc/images/median/lenna_med_9_9.png new file mode 100644 index 0000000..f068dbb Binary files /dev/null and b/doc/images/median/lenna_med_9_9.png differ diff --git a/doc/images/median/lenna_small_med_3_3.png b/doc/images/median/lenna_small_med_3_3.png new file mode 100644 index 0000000..eef311d Binary files /dev/null and b/doc/images/median/lenna_small_med_3_3.png differ diff --git a/doc/images/median/lenna_small_med_5_5.png b/doc/images/median/lenna_small_med_5_5.png new file mode 100644 index 0000000..fca6ab4 Binary files /dev/null and b/doc/images/median/lenna_small_med_5_5.png differ diff --git a/doc/images/median/lenna_small_med_7_7.png b/doc/images/median/lenna_small_med_7_7.png new file mode 100644 index 0000000..8ba3aab Binary files /dev/null and b/doc/images/median/lenna_small_med_7_7.png differ diff --git a/doc/images/median/lenna_small_med_9_9.png b/doc/images/median/lenna_small_med_9_9.png new file mode 100644 index 0000000..0eec833 Binary files /dev/null and b/doc/images/median/lenna_small_med_9_9.png differ diff --git a/include/filters/GP_Median.h b/include/filters/GP_Median.h index 891ae70..0547793 100644 --- a/include/filters/GP_Median.h +++ b/include/filters/GP_Median.h @@ -22,12 +22,12 @@ /* - Constant time Median Filter (the computational complexity is independend of + Constant time Median Filter (the computational complexity is independent of radius). The xmed and ymed are radius values for x and y. The algorithm uses xmed - respectively ymed pixel neighbours from each side so the result is median - of rectangle of 2 * xmed + 1 x 2 * ymed + 1 pixels. + respectively ymed pixel neighbors from each side so the result is median of + rectangle of 2 * xmed + 1 x 2 * ymed + 1 pixels. */ ----------------------------------------------------------------------- Summary of changes: doc/filters.txt | 57 +++++++++++++++++++++++++++++ doc/images/median/lenna_med_3_3.png | Bin 0 -> 331859 bytes doc/images/median/lenna_med_5_5.png | Bin 0 -> 275419 bytes doc/images/median/lenna_med_7_7.png | Bin 0 -> 241894 bytes doc/images/median/lenna_med_9_9.png | Bin 0 -> 218719 bytes doc/images/median/lenna_small_med_3_3.png | Bin 0 -> 89004 bytes doc/images/median/lenna_small_med_5_5.png | Bin 0 -> 74908 bytes doc/images/median/lenna_small_med_7_7.png | Bin 0 -> 66044 bytes doc/images/median/lenna_small_med_9_9.png | Bin 0 -> 59615 bytes include/filters/GP_Median.h | 6 ++-- 10 files changed, 60 insertions(+), 3 deletions(-) create mode 100644 doc/images/median/lenna_med_3_3.png create mode 100644 doc/images/median/lenna_med_5_5.png create mode 100644 doc/images/median/lenna_med_7_7.png create mode 100644 doc/images/median/lenna_med_9_9.png create mode 100644 doc/images/median/lenna_small_med_3_3.png create mode 100644 doc/images/median/lenna_small_med_5_5.png create mode 100644 doc/images/median/lenna_small_med_7_7.png create mode 100644 doc/images/median/lenna_small_med_9_9.png repo.or.cz automatic notification. 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