Boselli arrived at the DW Stadium during the summer from Estudiantes, where he had an impressive goal-scoring record, but the Argentinian is yet to find the net for his new club in four league starts and a Carling Cup tie at Hartlepool.
"He will come good, and he has been good in many aspects and many areas," Martinez said.
"Mauro, like any other player, needs a bit of a settling-in period because the Premier League is completely different to any other league in world football.
"But if you look at the adjustments as a new player you need to make to get to being yourself in the Premier League, it takes a little bit of time. Mauro is a proven goalscorer with a fantastic talent and we will get to enjoy his football at Wigan Athletic very, very soon."