?? linknew.c
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for (loop1 = 0; loop1 < height; loop1++) for (loop2 = 0; loop2 < width; loop2++) if (image[loop1][loop2] != BLACK) number++; /*** printf("number: %d\n", number); ***/}remove_isolated(){ int loop1, loop2; unsigned char i1, i2, i3, i4, i6, i7, i8, i9; long number; /*** printf("removing isolated points...\n"); ***/ number = 0; for (loop1 = 1; loop1 < height - 1; loop1++) for (loop2 = 1; loop2 < width - 1; loop2++) if (image[loop1][loop2] != BLACK) { i1 = image[loop1 - 1][loop2 - 1]; i2 = image[loop1][loop2 - 1]; i3 = image[loop1 + 1][loop2 - 1]; i4 = image[loop1 - 1][loop2]; i6 = image[loop1 + 1][loop2]; i7 = image[loop1 - 1][loop2 + 1]; i8 = image[loop1][loop2 + 1]; i9 = image[loop1 + 1][loop2 + 1]; if ((i1 + i2 + i3 + i4 + i6 + i7 + i8 + i9) == (8 * BLACK)) { image[loop1][loop2] = BLACK; number++; } } /*** printf("number of points removed: %d\n", number); ***/}link_open(option)int option;/* * option = 0 write list to disk option = 1 write significant lines to disk */{ int loop1, loop2, loop3; unsigned char i1, i2, i3, i4, i6, i7, i8, i9; int xp, yp; int end_of_line; for (loop1 = 0; loop1 < height; loop1++) /* for each row y */ for (loop2 = 0; loop2 < width; loop2++) { /* for each column x */ /* find pixel at end of line */ if (image[loop1][loop2] != BLACK) { i1 = 0; i2 = 0; i3 = 0; i4 = 0; i6 = 0; i7 = 0; i8 = 0; i9 = 0; if (image[loop1 - 1][loop2 - 1] != BLACK) i1 = 1; if (image[loop1][loop2 - 1] != BLACK) i2 = 1; if (image[loop1 + 1][loop2 - 1] != BLACK) i3 = 1; if (image[loop1 - 1][loop2] != BLACK) i4 = 1; if (image[loop1 + 1][loop2] != BLACK) i6 = 1; if (image[loop1 - 1][loop2 + 1] != BLACK) i7 = 1; if (image[loop1][loop2 + 1] != BLACK) i8 = 1; if (image[loop1 + 1][loop2 + 1] != BLACK) i9 = 1; if ((i1 + i2 + i3 + i4 + i6 + i7 + i8 + i9) == 1) { weight = 0; index = 0; list_no++; end_of_line = FALSE; /* track to end of line */ xp = loop2; yp = loop1; do { weight = weight + (unsigned char) image[yp][xp]; index++; xpix[index] = (float) xp; ypix[index] = (float) yp / aspect_ratio; image[yp][xp] = BLACK; /* goto next pixel if an edge pixel */ i1 = image[yp - 1][xp - 1]; i2 = image[yp][xp - 1]; i3 = image[yp + 1][xp - 1]; i4 = image[yp - 1][xp]; i6 = image[yp + 1][xp]; i7 = image[yp - 1][xp + 1]; i8 = image[yp][xp + 1]; i9 = image[yp + 1][xp + 1]; if (i1 != BLACK) { xp--; yp--; } else if (i2 != BLACK) { xp--; } else if (i3 != BLACK) { yp++; xp--; } else if (i4 != BLACK) { yp--; } else if (i6 != BLACK) { yp++; } else if (i7 != BLACK) { yp--; xp++; } else if (i8 != BLACK) { xp++; } else if (i9 != BLACK) { xp++; yp++; } else end_of_line = TRUE; } while (end_of_line == FALSE); if (lowe) weight /= (float)index; if (option == 1) { /* only write if significant */ if (weight < 0) printf("weight: %f\n",weight); if (weight > thresh_sig) { if (closed_only == FALSE) { no_lists_written++; /* printf("writing list %d weight %f\n", list_no,weight); */ if (flag == TRUE) fprintf(fp_out, " -1 0\n"); flag = TRUE; fprintf(fp_out, "list: %d\n", list_no); if (floating_point == TRUE) { for (loop3 = 1; loop3 <= index; loop3++) fprintf(fp_out, "%f %f\n", xpix[loop3], ypix[loop3]); } else { for (loop3 = 1; loop3 <= index; loop3++) fprintf(fp_out, "%4.0f %4.0f\n", xpix[loop3], ypix[loop3]); } } } } else { /* option = 0 */ /* write all lines */ if (closed_only == FALSE) { no_lists_written++; /* printf("writing list %d weight %f\n", list_no,weight); */ if (flag == TRUE) fprintf(fp_out, " -1 0\n"); flag = TRUE; fprintf(fp_out, "list: %d\n", list_no); if (floating_point == TRUE) { for (loop3 = 1; loop3 <= index; loop3++) fprintf(fp_out, "%f %f\n", xpix[loop3], ypix[loop3]); } else { for (loop3 = 1; loop3 <= index; loop3++) fprintf(fp_out, "%4.0f %4.0f\n", xpix[loop3], ypix[loop3]); } } } } } }}link_closed(option)int option;/* * option = 0 write list to disk option = 1 write significant lines to disk */{ int loop1, loop2, loop3; unsigned char i1, i2, i3, i4, i6, i7, i8, i9; int xp, yp; int end_of_line; for (loop1 = 0; loop1 < height; loop1++) /* for each row */ for (loop2 = 0; loop2 < width; loop2++) { /* for each column */ /* find any remaining pixel */ if (image[loop1][loop2] != BLACK) { /* at beginning of a line */ weight = 0; index = 0; list_no++; end_of_line = FALSE; /* track to end of line */ xp = loop2; yp = loop1; do { index++; xpix[index] = xp; ypix[index] = round(yp / aspect_ratio); weight = weight + (unsigned char) image[yp][xp]; image[yp][xp] = BLACK; /* goto next edge pixel */ i1 = image[yp - 1][xp - 1]; i2 = image[yp][xp - 1]; i3 = image[yp + 1][xp - 1]; i4 = image[yp - 1][xp]; i6 = image[yp + 1][xp]; i7 = image[yp - 1][xp + 1]; i8 = image[yp][xp + 1]; i9 = image[yp + 1][xp + 1]; if (i1 != BLACK) { xp--; yp--; } else if (i2 != BLACK) { xp--; } else if (i3 != BLACK) { yp++; xp--; } else if (i4 != BLACK) { yp--; } else if (i6 != BLACK) { yp++; } else if (i7 != BLACK) { yp--; xp++; } else if (i8 != BLACK) { xp++; } else if (i9 != BLACK) { xp++; yp++; } else end_of_line = TRUE; } while (end_of_line != TRUE); if (lowe) weight /= (float)index; if (option == 1) { /* only write if signoficant */ if (weight < 0) printf("weight: %f\n",weight); if (weight > thresh_sig) { no_lists_written++; /* printf("writing list %d weight %f\n", list_no,weight); */ if (flag == TRUE) fprintf(fp_out, " -1 0\n"); flag = TRUE; fprintf(fp_out, "list: %d\n", list_no); if (floating_point == TRUE) { for (loop3 = 1; loop3 <= index; loop3++) fprintf(fp_out, "%f %f\n", xpix[loop3], ypix[loop3]); } else { for (loop3 = 1; loop3 <= index; loop3++) fprintf(fp_out, "%4.0f %4.0f\n", xpix[loop3], ypix[loop3]); } } } else { /* option = 0 */ /* write all lines */ no_lists_written++; /* printf("writing list %d weight %f\n", list_no,weight); */ if (flag == TRUE) fprintf(fp_out, " -1 0\n"); flag = TRUE; fprintf(fp_out, "list: %d\n", list_no); if (floating_point == TRUE) { for (loop3 = 1; loop3 <= index; loop3++) fprintf(fp_out, "%f %f\n", xpix[loop3], ypix[loop3]); } else { for (loop3 = 1; loop3 <= index; loop3++) fprintf(fp_out, "%4.0f %4.0f\n", xpix[loop3], ypix[loop3]); } } } }}intround(x)float x;{ return floor(x + 0.5);}?? 快捷鍵說明
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