论文标题
运动适应的三维频率选择性外推
Motion-Adapted Three-Dimensional Frequency Selective Extrapolation
论文作者
论文摘要
已经表明,可以使用具有非规范采样的低分辨率传感器来获取高分辨率图像。因此,需要后处理。在视频数据方面,不仅可以使用空间社区来协助重建,而且还可以使用临时社区。这种问题的流行且性能良好的算法是三维频率选择性外推(3D-FSE),本文在本文中引入了运动适应版本。该提出的扩展解决了3D-FSE考虑的区域内内容的问题,这是由序列内的运动引起的。由于这一运动,可能会发生在重建过程中强调区域内未存在的原始信号中的区域。这样,将假内容引入外推序中,从而对所得的图像质量产生负面影响。在以下内容中提出的新型扩展包含了序列的运动数据,以便相应地适应算法并补偿不断变化的内容,从而与现有的3D-FSE相比,增益高达1.75 dB。
It has been shown, that high resolution images can be acquired using a low resolution sensor with non-regular sampling. Therefore, post-processing is necessary. In terms of video data, not only the spatial neighborhood can be used to assist the reconstruction, but also the temporal neighborhood. A popular and well performing algorithm for this kind of problem is the three-dimensional frequency selective extrapolation (3D-FSE) for which a motion adapted version is introduced in this paper. This proposed extension solves the problem of changing content within the area considered by the 3D-FSE, which is caused by motion within the sequence. Because of this motion, it may happen that regions are emphasized during the reconstruction that are not present in the original signal within the considered area. By that, false content is introduced into the extrapolated sequence, which affects the resulting image quality negatively. The novel extension, presented in the following, incorporates motion data of the sequence in order to adapt the algorithm accordingly, and compensates changing content, resulting in gains of up to 1.75 dB compared to the existing 3D-FSE.