Not implemented due to memory restrictions on the arduino

SivaBharani:
If i need to use those functions like
1)GetImage
2)GetRawImage
and more functions which are already defined but there is no expansion of above functions in .CPP file library with below message.
"Not implemented due to memory restrictions on the arduino."
How can i use them can any one tell me?

Its possible the Arduino the library was designed for does not have enough memory to implement the functions.