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115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
/*
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* main.c - test file for binmorph.c
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*
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* Copyright 2013 Edward V. Emelianoff <eddy@sao.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <math.h>
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#include <stdio.h>
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#include "binmorph.h"
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// these includes are for randini
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <unistd.h>
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/*
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* Generate a quasy-random number to initialize PRNG
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* name: throw_random_seed
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* @return value for curandSetPseudoRandomGeneratorSeed or srand48
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*/
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long throw_random_seed(){
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//FNAME();
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long r_ini;
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int fail = 0;
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int fd = open("/dev/random", O_RDONLY);
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do{
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if(-1 == fd){
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fail = 1; break;
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}
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if(sizeof(long) != read(fd, &r_ini, sizeof(long))){
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fail = 1;
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}
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close(fd);
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}while(0);
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if(fail){
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double tt = dtime() * 1e6;
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double mx = (double)LONG_MAX;
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r_ini = (long)(tt - mx * floor(tt/mx));
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}
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return (r_ini);
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}
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int main(int ac, char **v){
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int i,j, W = 500, H = 500, W_0;
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//double midX = (W - 1.0)/ 4. - 1., midY = (H - 1.) / 4. - 1.;
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//double ro = sqrt(midX*midY), ri = ro / 1.5;
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bool *inp = Malloc(W * H, sizeof(bool));
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srand48(throw_random_seed());
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for(i = 0; i < H; i++)
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for(j = 0; j < W; j++)
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inp[i*W+j] = (drand48() > 0.7);
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unsigned char *b2ch = bool2char(inp, W, H, &W_0);//, *immer;
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/*printf("image:\n");
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printC(b2ch, W_0, H);*/
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// immer = FC_filter(b2ch, W_0, H);
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// printf("\n\n\nFilter for 4-connected areas searching:\n");
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// printC(immer, W_0, H);
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// FREE(immer);
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size_t NL;
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// printf("\nmark 4-connected components:\n");
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printf("4new\t");
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cclabel4_1(b2ch, W, H, W_0, &NL);
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// printf("\nmark 4-connected components (old):\n");
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printf("4old\t");
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cclabel4(b2ch, W, H, W_0, &NL);
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// printf("\nmark 8-connected components:\n");
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printf("8new\t");
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cclabel8_1(b2ch, W, H, W_0, &NL);
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// printf("\nmark 8-connected components (old):\n");
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printf("8old\t");
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cclabel8(b2ch, W, H, W_0, &NL);
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FREE(b2ch);
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return 0;
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}
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/*
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* bench
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* names = ["4new"; "4old"; "8new"; "8old"]; for i = 1:4; nm = names(i,:); time = []; sz = []; for i = 1:52; if(name{i} == nm) time = [time speed(i)]; sz = [sz num(i)]; endif;endfor; ts = time./sz; printf("%s: time/object = %.1f +- %.1f us\n", nm, mean(ts)*1e6, std(ts)*1e6);endfor;
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*
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* 0.25 megapixels
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* 4new: time/object = 1.9 +- 0.4 us
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* 4old: time/object = 1.7 +- 0.1 us
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* 8new: time/object = 3.9 +- 0.1 us
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* 8old: time/object = 13.5 +- 2.1 us
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*
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* 1 megapixels ---> [name speed num] = textread("1megapixel", "%s %f %f");
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* 4new: time/object = 5.5 +- 0.5 us
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* 4old: time/object = 5.3 +- 0.0 us
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* 8new: time/object = 13.3 +- 0.1 us
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* 8old: time/object = 47.6 +- 2.2 us
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*
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* 4 megapixels ---> [name speed num] = textread("4megapixels", "%s %f %f");
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* 4new: time/object = 21.3 +- 1.5 us
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* 4old: time/object = 22.3 +- 2.2 us
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* 8new: time/object = 57.6 +- 1.3 us
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* 8old: time/object = 195.5 +- 11.7 us
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*
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*
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*/
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