
struct sectorlist* checkmove(ImagePtr *dest, ImagePtr imsource, int deltabright, int sectorsize, int method);
/*Returns a list of overbrighted sectors in source,
  and paints this sectors into a destination image
  a sector is overbrighted when more than 20% over
  the average sector brightness + deltabright if
  method is 0, and when >deltabright if method is 1
  */

