Image-based rendering is a method for generating "full-parallax" still or video images from photographed and live-action images taken from multiple viewpoints without the need for modeling (i.e., a process that uses geometrical configurations to draw up shapes of objects).
When it is attempted to create realistic still or video images, modeling takes considerable time and incurs huge costs.
By using image-based rendering, on the other hand, it is possible to efficiently create full-parallax still or video images.