Quality improving techniques in DIBR for free-viewpoint video,” 3DTVConference

This paper evaluates our 3D view interpolation rendering al-gorithm and proposes a few performance improving techniques. We aim at developing a rendering method for free-viewpoint 3DTV, based on depth image warping from surrounding cam-eras. The key feature of our approach is warping texture and depth in the first stage simultaneously and postpone blend-ing the new view to a later stage, thereby avoiding errors in the virtual depth map. We evaluate the rendering quality in two ways. Firstly, it is measured by varying the distance be-tween the two nearest cameras. We have obtained a PSNR gain of 3 dB and 4.5 dB for the ‘Breakdancers ’ and ‘Bal-let ’ sequences, respectively, compared to the performance of a recent algorithm. A second series of tests in measuring the rendering quality were performed using compressed video or images from surrounding cameras. The overall quality of the system is dominated by rendering quality and not by coding. Index Terms — 3D view interpolation, image based ren-dering, 3D rendering. 1