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提出一种实时帧迭代反向投影算法实现对图像序列的超分辨率处理。通过建立虚拟全景图像及其迭代权阵,实现迭代反向投影的逐帧处理,从而可实时地对视频图像序列作超分辨率处理。另外还采用了基于光流计算的分层迭代图像配准、双线性插值模拟采样、阈值先验约束、坐标系同步变换等技术来提高算法的有效性。通过对仿真和实际视频序列的处理对算法进行了验证。
A real-time frame iteration reverse projection algorithm is proposed to realize the super-resolution processing of image sequences. By constructing a virtual panoramic image and its iterative weight matrix, the iterative reverse projection can be processed on a frame-by-frame basis, so that the video image sequence can be super-resolved in real time. In addition, techniques such as layered iterative image registration based on optical flow calculation, bilinear interpolation analog sampling, threshold prior constraint and synchronous conversion of coordinate system are used to improve the effectiveness of the algorithm. The algorithm is validated by processing simulation and actual video sequences.