BBTK_OUTPUT(ImageProperties,Index,"Index of the image",std::vector<int>,"image index");
BBTK_OUTPUT(ImageProperties,Size,"Size in each dimension",std::vector<int>,"image size");
BBTK_OUTPUT(ImageProperties,Origin,"Origin of the image",std::vector<float>,"image origin");
BBTK_OUTPUT(ImageProperties,Index,"Index of the image",std::vector<int>,"image index");
BBTK_OUTPUT(ImageProperties,Size,"Size in each dimension",std::vector<int>,"image size");
BBTK_OUTPUT(ImageProperties,Origin,"Origin of the image",std::vector<float>,"image origin");