is well k*atm that renl PCB inuge inipieetio* bwal 0n rclerential ap: proaches foces misalignment problems in detecting delects betwecn a template imoge arul a ilefectiae image. Hence, o reliable image registrtion techniqre is needed to aligt, these two irnages per{utly. Henre, a rqistrution trch*irye uhich inaryorvtes affme trcnsformotion anil bi-cubic interynlation has been prcposed. Etperimental rcsults haae shown that this regishation techniqte is suitoble to be employei to obt...