Frogger (1997) Sprites/Textures

I've been trying to extract the sprites and textures from the PS1 Frogger game but the sprites only come out in black and white and the textures just don't show up at all.

  frogy1.png (Size: 48.57 KB / Downloads: 12)

  frogy2.png (Size: 34.07 KB / Downloads: 4)