Abstract
Three dimensional television (3D-TV) is expected to be the next step in the advancement of television. In last few years, the technology of 3D-TV has been presented by advertisement boards, movie theaters, and LCD monitors. Their contents become more and more photographic. But, it is impractical to transmit images of all view angles due to the limitation of bandwidth. Depth image based rendering (DIBR) is a commonly used technique to generate virtual views of a scene from a known view and its corresponding depth map. However, a main problem of DIBR is disocclusion region which causes a terrible visual quality degradation. In multi-view case, the problem is getting even worse. Hence, we proposed a modified parallax map to deal with the problem. The modified parallax map can not only reveal the characteristic of smooth filter, but also prevent the disadvantage of geometric distortion. In the experiment result, the visual quality of generated virtual view can be obviously improved by using our proposed method. Furthermore, in order to develop the multi-view display which contains 9 auto-stereoscopic views, we have to face more serious disocclusion problem caused by multi-view case. In multi-view case, the disocclusion problem can still be solved by modified parallax map because it reserves enough background information from the original image for us to fill the holes. Most important of all, this algorithm is not hard to be implemented by hardware, compared to any smoothing filter. The feasibility of our proposed algorithm can be verified by using Xilinx Virtex II.