text: #if !defined(SEAMCARVING_H)
  #define SEAMCARVING_H
  #include "c_img.h"
  
  void calc_energy(struct rgb_img *im, struct rgb_img **grad);
  void dynamic_seam(struct rgb_img *grad, double **best_arr);
  void recover_path(double *best, int height, int width, int **path);
  void remove_seam(struct rgb_img *src, struct rgb_img **dest, int *path);
  
  #endif
  