-plate spline transformation</li><li><b><a href='%pathto:imop.vl_waffine;'>VL_WAFFINE</a></b> Apply affine transformation to points</li><li><b><a href='%pathto:imop.vl_witps;'>VL_WITPS</a></b> Inverse thin-plate spline warping</li><li><b><a href='%pathto:imop.vl_wtps;'>VL_WTPS</a></b> Thin-plate spline warping</li><li><b><a href='%pathto:imop.vl_xyz2lab;'>VL_XYZ2LAB</a></b> Convert XYZ color space to LAB</li><li><b><a href='%pathto:imop.vl_xyz2luv;'>VL_XYZ2LUV</a></b> Convert XYZ color space to LUV</li><li>