Recovering pose and occlusion consistencies in augmented reality systems using affine properties

摘要

Purpose – Augmented environments superimpose computer enhancements on the real world. The pose and occlusion consistencies between virtualand real objects have to be managed correctly, so that users can look at the natural scene. The purpose of this paper is to describe a novel techniquethat can be used to resolve pose and occlusion consistencies in real time with a unified affine properties-based framework.Design/methodology/approach – First, the method is simple and can resolve pose and occlusion consistencies in a unified framework based onaffine properties. It can improve third dimension of the augmented reality system to a large degree while reducing the computing complexity. Second,the method is robust to arbitrary camera motion and does not require multiple cameras, camera calibration, use of fiducials, or a structural model of thescene to work. Third, a novel feature tracking method is proposed combing narrow and wide baseline strategies to match natural features betweenreference images and current frame directly. Findings – It is found that the method is still effective even under large changes of viewing angles, while casting off the requirement that the initialcamera position should close to the reference images. Originality/value – This paper describes some experiments which have been carried out to demonstrate the validity of the proposed approach.