Augmented reality with zooming camera: accurate pose and focal length estimation

ABSTRACT

In this research, we want to build a system that allows us to track the object and augment the virtual object into the real scene image properly. This research addresses the problem of camera self-calibration. The object that we want to track may look small in the image since it is far away. A camera that has zooming capability is very useful to enlarge the image. The field of view (FOV) of an optical zooming camera will change according to the camera focal length. The focal length estimation is needed in order to have a good augmentation object without deformation. Once the camera focal length is known, the 3D virtual object is overlaid on the image.