Locating and checking of a BGA pin's position using gray level

Dept. of Electr. Eng., National Taiwan Univ.Ruo, Chi-WeiChi-WeiRuoShih, Ching-LongChing-LongShih2007-04-192018-07-062007-04-192018-07-062003-09http://ntur.lib.ntu.edu.tw//handle/246246/200704191002938application/pdf374536 bytesapplication/pdfen-USLocating and checking of a BGA pin's position using gray leveljournal article10.1109/ROBOT.2003.1242135http://ntur.lib.ntu.edu.tw/bitstream/246246/200704191002938/1/01242135.pdf