Ideye joined West Brom in a club record deal in the region of £10million last week from Dynamo Kiev as Irvine looked to bolster his attacking options.
Nigeria international Ideye scored 33 goals in 74 games during his time in Ukraine and Irvine admits he was forced to rely on his scouts and video footage to make sure the striker was the right man for the club.
"I don't know much about Brown Ideye," said Irvine. "I've not seen him live, but people we trust have done.
"It's not necessarily something that is detrimental to me not to have seen him live, though ideally I would like to because that's how I like to do my work.
"But we've done our research on him and what we have done is found decent players in the past in this way."