int set_target(float *color, int x, int y);
void save_data(KeyFrame *keyframe);
void read_data(KeyFrame *keyframe);
int set_target(float *color, int x, int y);
void save_data(KeyFrame *keyframe);
void read_data(KeyFrame *keyframe);
VFrame *src, *edg, *msk;
int w, h, color_model, bpp, comp;
int is_yuv, is_float;
VFrame *src, *edg, *msk;
int w, h, color_model, bpp, comp;
int is_yuv, is_float;