bool SetImages(std::vector<std::string> filenames, vvImageReader::LoadedImageType type, int n=0);
bool SetOverlay(std::vector<std::string> filenames, int dim, std::string component, vvImageReader::LoadedImageType type);
bool SetImages(std::vector<std::string> filenames, vvImageReader::LoadedImageType type, int n=0);
bool SetOverlay(std::vector<std::string> filenames, int dim, std::string component, vvImageReader::LoadedImageType type);