Lee, Tong-YeeLin, Young-ChingSun, Y.N.Lin, Leeween2015-02-152015-02-1519981467-8659https://doi.org/10.1111/1467-8659.00249Metamorphosis is a powerful visual technique, for producing interesting transition between two images or volume data. Image or volume metamorphosis using simple features provides flexible and easy control of visual effect. The feature-based image warping proposed by Beier and Neely is a brute-force approach. In this paper, first, we propose optimization methods to reduce their warping time without noticeable loss of image quality. Second, we extend our methods to 3D volume data and propose several interesting warping operators allowing global and local metamorphosis of volume data.10.1111/1467-8659.0024915-22