Unstructured lumigraph rendering
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
High-quality video view interpolation using a layered representation
ACM SIGGRAPH 2004 Papers
Motion driven adaptive transform based on wavelet transform for enhanced video coding
MobiMedia '06 Proceedings of the 2nd international conference on Mobile multimedia communications
New edge-directed interpolation
IEEE Transactions on Image Processing
Locally adaptive wavelet-based image interpolation
IEEE Transactions on Image Processing
View Scalable Multiview Video Coding Using 3-D Warping With Depth Map
IEEE Transactions on Circuits and Systems for Video Technology
Simple multi-view coding with depth map
3D Research
Depth image enlargement using an evolutionary approach
Image Communication
Hi-index | 0.00 |
In this paper we propose a novel video object edge adaptive upsampling scheme for application in video-plus-depth and Multi-View plus Depth (MVD) video coding chains with reduced resolution. Proposed scheme is for improving the rate-distortion performance of reduced-resolution depth map coders taking into account the rendering distortion induced in free-viewpoint videos. The inherent loss in fine details due to downsampling, particularly at video object boundaries causes significant visual artefacts in rendered free-viewpoint images. The proposed edge adaptive upsampling filter allows the conservation and better reconstruction of such critical object boundaries. Furthermore, the proposed scheme does not require the edge information to be communicated to the decoder, as the edge information used in the adaptive upsampling is derived from the reconstructed colour video. Test results show that as much as 1.2 dB gain in free-viewpoint video quality can be achieved with the utilization of the proposed method compared to the scheme that uses the linear MPEG re-sampling filter. The proposed approach is suitable for video-plus-depth as well as MVD applications, in which it is critical to satisfy bandwidth constraints while maintaining high free-viewpoint image quality.