the virtual viewpoint locations being selected by the viewers or determined by viewer tracking

Full Title

Stereoscopic video systems; Multi-view video systems; Details thereof > Processing, recording or transmission of stereoscopic or multi-view image signals > Processing image signals (for multi-view video sequence encoding H04N19/597) > Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation > the virtual viewpoint locations being selected by the viewers or determined by viewer tracking