The exhibition opened on Friday with a performance by a student dance ensemble and a Czech Roma bank. Two Hungarian films about the Roma were also shown.
The 50 works by Oláh have come from the RomArt Foundation, said Hungarian Cultural Centre deputy diretor Borbála Csoma.
A mark of the exhibition's success is the fact that the museum in Brno has already inquired about buying nine of the pictures.
Oláh grew up in the Gypsy quarter of a Pécskődomb. Instead of going to school, she stayed at home to help raises her nine siblings. Later she worked at a coal mine in Salgótarján in the poor northeast of Hungary. It was not until the beginning of the 70s, after her own children had left home, that Oláh started painting.
Csoma noted that the Czech premiere of a Hungarian play, Zoltán Egressy's Sóska, sültkrumpli (Sorrel, French Fries) would take place in just a few days. The play, to be shown in Ceske Budejovice, was translated by Tatjana Dimitrová.
