Method of detecting {TAIL ~ focus position} of {HEAD ~ object} from variable gray level image of object 
Method of detecting { TAIL ~ focus position } of { HEAD ~ object } from variable gray level image of object
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH