In scientific visualization, image-based flow visualization (or visualisation) is a computer modelling technique developed by Jarke van Wijk  to visualize two dimensional flows of liquids such as water and air, like the wind movement of a tornado. Compared with integration techniques it has the advantage of producing a whole image at every step, as the technique relies upon graphical computing methods for frame-by-frame capture of the model of advective transport of  a decaying dye. It is a method from the texture advection family.