/*******************************************
*
* high_pixel(..
*
* This function replaces the pixel at
* the center of a 3x3, 5x5, etc. area
* with the max for that area.
*
*******************************************/
high_pixel(in_name, out_name, the_image, out_image,
il, ie, ll, le, size)
char in_name[], out_name[];
int il, ie, ll, le, size;
short the_image[ROWS][COLS],
out_image[ROWS][COLS];
{
int a, b, count, i, j, k,
length, sd2, sd2p1, ss, width;
short *elements;
struct tiff_header_struct image_header;
sd2 = size/2;
sd2p1 = sd2 + 1;
/**********************************************
*
* Allocate the elements array large enough
* to hold size*size shorts.
*
**********************************************/
ss = size*size;
elements = (short *) malloc(ss * sizeof(short));
if(does_not_exist(out_name)){
printf("\n\n output file does not exist %s",
out_name);
read_tiff_header(in_name, &image_header);
round_off_image_size(&image_header,
&length, &width);
image_header.image_length = length*ROWS;
image_header.image_width = width*COLS;
create_allocate_tiff_file(out_name, &image_header,
out_image);
} /* ends if does_not_exist */
read_tiff_image(in_name, the_image, il, ie, ll, le);
/***************************
*
* Loop over image array
*
***************************/
printf("\n");
for(i=sd2; i<ROWS-sd2; i++){
if( (i%10) == 0) printf("%d ", i);
for(j=sd2; j<COLS-sd2; j++){
count = 0;
for(a=-sd2; a<sd2p1; a++){
for(b=-sd2; b<sd2p1; b++){
elements [count] = the_image[i+a][j+b];
count++;
}
}
sort_elements(elements, &ss);
out_image[i][j] = elements[ss-1];
} /* ends loop over j */
} /* ends loop over i */
fix_edges(out_image, sd2);
write_array_into_tiff_image(out_name, out_image,
il, ie, ll, le);
free(elements);
} /* ends high_pixel */
/*******************************************
*
* low_pixel(..
*
* This function replaces the pixel at
* the center of a 3x3, 5x5, etc. area
* with the min for that area.
*
*******************************************/
low_pixel(in_name, out_name, the_image, out_image,
il, ie, ll, le, size)
char in_name[], out_name[];
int il, ie, ll, le, size;
short the_image[ROWS][COLS],
out_image[ROWS][COLS];
{
int a, b, count, i, j, k,
length, sd2, sd2pl, ss, width;
short *elements;
struct tiff_header_struct image_header;
sd2 = size/2;
sd2pl = sd2 + 1;
/**********************************************
*
* Allocate the elements array large enough
* to hold size*size shorts.
*
**********************************************/
ss = size*size;
elements = (short *) malloc(ss * sizeof(short));
if(does_not_exist(out_name)){
printf("\n\n output file does not exist %s",
out_name);
read_tiff_header(in_name, &image_header);
round_off_image_size(&image_header,
&length, &width);
image_header.image_length = length*ROWS;
image_header.image_width = width*COLS;
create_allocate_tiff_file(out_name, &image_header,
out_image);
} /* ends if does_not_exist */
read_tiff_image(in_name, the_image, il, ie, ll, le);
/***************************
*
* Loop over image array
*
***************************/
printf("\n");
for(i=sd2; i<ROWS-sd2; i++){
if( (i%10) == 0) printf("%d ", i);
for(j=sd2; j<COLS-sd2; j++){
count = 0;
for(a=-sd2; a<sd2p1; a++){
for(b=-sd2; b<sd2p1; b++){
elements[count] = the_image[i+a][j+b];
count++;
}
}
sort_elements(elements, &ss);
out_image[i][j] = elements[0];
} /* ends loop over j */
} /* ends loop over i */
fix_edges(out_image, sd2);
write_array_into_tiff_image(out_name, out_image,
il, ie, ll, le);
free(elements);
} /* ends low_pixel */
/* End of File */