Just scan any sketch, or select an image (or a sequence) in an AVI movie, make some bitmap adjustements (scale, select zone, enhance, swap colors, rotate...) and Vector Eye will automatically create multiple SVG file corresponding to differents settings. You can analyse, modify till the result suits you (quality, weight, number of vectors).
Just save it in the appropriate format for your purpose and drop into your favorite editor or authoring tool to complete or animate your design. You could also use the batch system to launch hundreds of vectorization processes. Download