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--Sven
This commit is contained in:
Sven Neumann
2000-02-15 12:14:47 +00:00
parent 970ad834d1
commit cefe65bece
2 changed files with 15 additions and 9 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Tue Feb 15 13:14:31 CET 2000 Sven Neumann <sven@gimp.org>
* plug-ins/common/unsharp.c:
updates from author Winston Chang <wchang3@students.wisc.edu>
2000-02-15 Tor Lillqvist <tml@iki.fi> 2000-02-15 Tor Lillqvist <tml@iki.fi>
* libgimp/gimp.def * libgimp/gimp.def

19
plug-ins/common/unsharp.c
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@ -5,7 +5,7 @@
* *
* Copyright (C) 1999 Winston Chang * Copyright (C) 1999 Winston Chang
* <wchang3@students.wisc.edu> * <wchang3@students.wisc.edu>
* <winston@steppe.com> * <winston@stdout.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -174,7 +174,10 @@ query (void)
/* Install a procedure in the procedure database. */ /* Install a procedure in the procedure database. */
gimp_install_procedure ("plug_in_unsharp_mask", gimp_install_procedure ("plug_in_unsharp_mask",
"An unsharp mask filter", "An unsharp mask filter",
"", "The unsharp mask is a sharpening filter that \
works by comparing using the difference of the image and a blurred version \
of the image. It is commonly used on photographic images, and is provides \
a much more pleasing result than the standard sharpen filter.",
"Winston Chang <wchang3@students.wisc.edu>", "Winston Chang <wchang3@students.wisc.edu>",
"Winston Chang", "Winston Chang",
"1999", "1999",
@ -287,11 +290,6 @@ unsharp_mask (GDrawable *drawable,
gimp_drawable_mask_bounds(drawable->id, &x1, &y1, &x2, &y2); gimp_drawable_mask_bounds(drawable->id, &x1, &y1, &x2, &y2);
gimp_progress_init(_("Blurring...")); gimp_progress_init(_("Blurring..."));
/* generate convolution matrix */
cmatrix_length = gen_convolve_matrix(radius, &cmatrix);
/* generate lookup table */
ctable = gen_lookup_table(cmatrix, cmatrix_length);
width = drawable->width; width = drawable->width;
height = drawable->height; height = drawable->height;
bytes = drawable->bpp; bytes = drawable->bpp;
@ -437,6 +435,9 @@ unsharp_region (GPixelRgn srcPR,
g_free(dest_row); g_free(dest_row);
g_free(cur_col); g_free(cur_col);
g_free(dest_col); g_free(dest_col);
g_free(cmatrix);
g_free(ctable);
} }
/* this function is written as if it is blurring a column at a time, /* this function is written as if it is blurring a column at a time,
@ -681,7 +682,7 @@ gen_convolve_matrix (gdouble radius,
matrix_length = 2 * ceil(radius-0.5) + 1; matrix_length = 2 * ceil(radius-0.5) + 1;
if (matrix_length <= 0) matrix_length = 1; if (matrix_length <= 0) matrix_length = 1;
matrix_midpoint = matrix_length/2 + 1; matrix_midpoint = matrix_length/2 + 1;
*cmatrix_p = (gdouble*)(malloc(matrix_length * sizeof(gdouble))); *cmatrix_p = (gdouble*)(g_malloc(matrix_length * sizeof(gdouble)));
cmatrix = *cmatrix_p; cmatrix = *cmatrix_p;
/* Now we fill the matrix by doing a numeric integration approximation /* Now we fill the matrix by doing a numeric integration approximation
@ -739,7 +740,7 @@ gen_lookup_table (gdouble *cmatrix,
gint cmatrix_length) gint cmatrix_length)
{ {
int i, j; int i, j;
gdouble* lookup_table = malloc(cmatrix_length * 256 * sizeof(gdouble)); gdouble* lookup_table = g_malloc(cmatrix_length * 256 * sizeof(gdouble));
#ifdef READABLE_CODE #ifdef READABLE_CODE
for (i=0; i<cmatrix_length; i++) for (i=0; i<cmatrix_length; i++)