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- 1. /*******************************************************************/
- 2. /* invert Invert Pixels to Make Background Dark */
- 3. /*******************************************************************/
- 4.
- 5. #include "VisXV4.h" /* VisionX structure include file */
- 6. #include "Vutil.h" /* VisionX utility header files */
- 7. #include "stdlib.h"
- 8.
- 9. VXparam_t par[] = /* command line structure */
- 10. { /* prefix, value, description */
- 11. { "if=", 0, " input file vtemp: local max filter "},
- 12. { "of=", 0, " output file "},
- 13. { 0, 0, 0} /* list termination */
- 14. };
- 15. #define IVAL par[0].val
- 16. #define OVAL par[1].val
- 17.
- 18. main(argc, argv)
- 19. int argc;
- 20. char *argv[];
- 21. {
- 22. Vfstruct (im); /* i/o image structure */
- 23. Vfstruct (tm); /* temp image structure */
- 24.
- 25. int y,x; /* index counters */
- 26. VXparse(&argc, &argv, par); /* parse the command line */
- 27.
- 28. Vfread(&im, IVAL); /* read image file */
- 29. Vfembed(&tm, &im, 1,1,1,1); /* image structure with border */
- 30. Vfembed(&im2, &im, 1,1,1,1); /* image structure with border */
- 31. if ( im.type != VX_PBYTE ) { /* check image format */
- 32. fprintf(stderr, "vtemp: no byte image data in input file\n");
- 33. exit(-1);
- 34. }
- 35. for (y = im.ylo ; y <= im.yhi ; y++) { /* compute the function */
- 36. for (x = im.xlo; x <= im.xhi; x++) {
- 37. if (tm.u[y][x] < 20){
- 38. im.u[y][x] = 0;
- 39. }
- 40. else {
- 41. im.u[y][x] = 255;
- 42. }
- 43. }
- 44. }
- 45.
- 46.
- 47. Vfwrite(&im, OVAL); /* write image file */
- 48. exit(0);
- 49. }
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