Apparatus of inter prediction for spherical images and cubic images

Methods and apparatus of video encoding and decoding for a spherical image sequence and a cubic image sequence using circular Inter prediction are disclosed. For the spherical image sequence, the search window includes an area outside or crossing a vertical frame boundary of the reference frame for at least one block of the current spherical image to be encoded. Candidate reference blocks within the search window are determined, where if a given candidate reference block is outside or crossing one vertical frame boundary, the reference pixels are accessed circularly from the reference frame ina horizontal direction crossing the vertical frame boundary of the reference frame. For the cubic image sequence, circular edges of the cubic frame are determined. The search window includes an areaoutside or crossing a circular edge of the reference frame for at least one block of the current cubic frame to be encoded. 本发明公开了视频编码与解码的方法和装置，其使用环形帧间预测以用于球面图像序列和立方体图像序列。对于球面图像序列，搜索窗口包括位于参考帧的垂直帧边界的外部或跨过参考帧的垂直帧边界以用于待编码的当前球面图像的