File f = new File(filePath);
fis = new ObjectInputStream(new FileInputStream(f));
int count = fis.readInt();
List<SURFInterestPoint> al = new ArrayList<SURFInterestPoint>();
for(int i=0;i<count;i++){
SURFInterestPoint ip = (SURFInterestPoint) fis.readObject();
al.add(ip);
}
int w = fis.readInt();
int h = fis.readInt();
InterestPointListInfo ipl = new InterestPointListInfo();