We propose a complete still image based 2D-3D mobile conversion system for touch screen use. The system consists of interactive segmentation followed by 3D rendering. The interactive segmentation is conducted dynamically by color Gaussian mixture model updates and dynamic-iterative graph-cut. A coloring gesture is used to guide the way and entertain the user during the process. Output of the image segmentation is then fed to the 3D rendering stage of the system. For rendering stage, two novel improvements are proposed to handle holes resulting from depth image based rendering process. These improvements are also expected to enhance the 3D perception. These two methods are subjectively tested and their results are presented.