Ray space representation is an effective approach to realizing real time free viewpoint video system with complicated scenes. A feature point based ray space interpolation method is proposed for arbitrary viewpoint image rendering in this paper. At first

feature points of ray space slice or image are extracted

then

considering occluded problem

the feature points are matched based on correlation based criterion

and each ray space slice is segmented into different regions. Finally

an interpolation operation is applied to the segmented regions. Experimental results show that the proposed method can interpolate ray space data fast and render arbitrary viewpoint images

and PSNR of the interpolated ray space data is high

as well as quality of the rendered arbitrary viewpoint images.