There isn't any software available that can take a single 2D full body image image and turn it into a 3D model. You would need to have many drawings of the character at all angles to be able to create a 3D character and even this it is quite a complex process and not a one click solution.
If you want to work in 2D animation then our Cartoon Animator 4 software can help bring your drawn characters to life. These won't be 3D models but will be animated 2D models. For experienced users you can even simulate 3D characters providing you have drawings of your character at 45 degree angles. These can then be added to create a character that can turn a full 360 degrees such as the one below.
Peter
Forum Administrator
www.reallusion.com